RU2728955C1 - Apparatus for determining rational program of maintenance and operation of article - Google Patents

Abstract

FIELD: control device.SUBSTANCE: invention relates to monitoring devices and can be used in creation, testing and operation of planned for use from standby or standby mode radioelectronic products to determine optimum programs for their maintenance and operation. Device comprises registers for recording initial data, a pulse generator, a counter with a conversion factor of seven, a decoder, units of elements AND, multipliers, a unit for calculating, storing and issuing the probability of fail-safe operation of the article, units for calculating, storing and issuing failure probability, a unit for calculating the sum of an infinitely decreasing progression, a unit of OR elements, accumulating adders, adders, dividers, a comparator unit, an OR element, AND elements, a trigger, a delay element, a unit for calculating a rational value of the monitoring period.EFFECT: high accuracy of determining the period of maintenance and duration of checking functioning.1 cl, 6 dwg

Description

The invention relates to control devices and can be used in scientific research and technology, where it is required to determine the rational periods of maintenance (TO) and the duration of preventive and post-repair checks of the functioning of radio electronic products (REI), operated in standby mode.

Known devices for determining the optimal periods and programs of maintenance of products based on models of the cycle of maintenance, allowing to take into account the average duration of scheduled sessions of performance monitoring, preventive maintenance and emergency recovery work in the process of maintenance [RF Patents No. 2279712, 2310913, 2429543, 2342706].

The disadvantage of these devices is the use of inaccurate models of the maintenance cycle that do not take into account the mode of checks of the functioning of products (PFI), and the lack of accounting for the consumption of the REI resource.

Known devices for determining the optimal periods of control and maintenance of products on a given resource, taking into account its consumption in the states of operability and failure of products, as well as during sessions of their control and maintenance [Ed. St. USSR No. 1059593, 1439644, 1580414, 1617453, 1661812, 1679512, 1837338, RF Patents No. 2071118, 2228541].

The disadvantage of these devices is the use of approximate models of the functioning and resource consumption of products that do not take into account PFI and the ability to determine the service life of the REI.

A device is known for determining the optimal period of control and maintenance of a product [RF Patent No. 2604437], which allows to take into account in the maintenance cycle the operation of carrying out in the readiness maintenance mode (RPG) tests of the product for operation after scheduled preventive maintenance (PPP) in the process of periodic maintenance (PTO ) or emergency and preventive repair (APR) before transferring the product to standby mode (RO).

The disadvantages of this device are the lack of accounting for resource consumption when determining the optimal value of the period of maintenance of the product (τ) and the limited ability to determine the optimal value of τ only for a given value of the duration of the operation for checking the operation of the product in the RPG (τ _И ), which does not allow using this device determine the rational combination of the values of τ and τ _I.

The closest in technical essence to the claimed invention is the device [RF Patent No. 2701484], which allows to take into account the resource consumption of the product during operation and to determine the rational (maximum allowable) value of τ _And , which ensures the specified product service life.

The disadvantage of the device is the ability to determine τ _And only for a given value of τ, which does not allow determining with the help of this device a rational combination of values of τ _And and τ, i.e. the exact best values of these values based on a comprehensive account of factors and conditions for determining a rational program for the maintenance and operation of the REI.

.The purpose of the invention is to improve the accuracy of determining the maintenance period and the duration of the PFI by taking into account the consumption of the technical resource of the REI in various operating modes (RO, carrying out maintenance and PFI) during the service life, which allows to ensure, with the obtained combination of τ and τ _{And, the} achievement of the maximum technical utilization factor K _TI ) of the product, provided that the average service life (T _SL ) of the REI is not less than the specified

...

This goal is achieved by the fact that in a device containing a pulse generator, a unit for calculating, storing and issuing the probability of failure-free operation of the product, the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth and tenth registers for recording initial data, a counter with a conversion factor of seven, decoder, first, second, third, fourth, fifth, sixth, seventh, blocks of elements AND, first, second, third and fourth multiplication blocks, first and second blocks for calculating, storing and issuing the probability of product failure, calculation block sums of an infinitely decreasing progression, OR element, first and second accumulating adders, first, second, third and fourth adders, first, second, third, fourth, fifth and sixth division blocks, comparison block, OR element block, delay element, the first and the second elements AND, a trigger, a block for calculating the rational value of the control period, which contains the first and second registers for recording the initial data, a reverse counter, the first, second, third and fourth multiplication units, the unit for calculating, storing and issuing the probability of maintaining the operational state of the product, the first, second and third adders, the accumulating adder, the division unit, the first, second, third, fourth, fifth and sixth blocks of AND elements, first, second, third, fourth, fifth and sixth registers, first, second and third comparison blocks, first and second AND elements, trigger, first, second, third, fourth, fifth, sixth, seventh and eighth delay elements.

.The proposed device for determining a rational program of maintenance and operation can be used in the creation, testing and operation of REIs planned for use from a RO or RPG, to determine rational programs for their maintenance and operation (TOE), providing a maximum K _TI at

...

The coefficient of technical use K _TI , in accordance with [GOST R 27.002-2009. Reliability in technology. Terms and definitions] is (in the field of reliability in engineering) the proportion of the time that the product is in a working condition relative to the total duration of operation in a given time interval, including all types of maintenance.

The average service life T _{SL of the} product is the mathematical expectation of the service life, defined as the duration of the product's operation (or its renewal after major overhaul) before the onset of the limiting state [GOST R 27.002-2009. Reliability in technology. Terms and Definitions].

The technical result of the present invention is to improve the accuracy of determining the values of τ _And and τ, taking into account the consumption of the resource during the time T _SL .

The value of the actually achievable average service life of the REI, taking into account the consumption of the product resource during operation, is determined taking into account the following factors.

Resource in [GOST R 27.002-2009. Reliability in technology. Terms and definitions] is defined as the total operating time of a product during its service life.

The rate of resource consumption is different depending on the magnitude of the load to which the product is subjected.

The resource consumption occurs not only during the operation of the REI, but also when the products are in the off state [RF Patent No. 2604437], therefore, it is advisable to find a rational relationship between the various modes.

Some types of special-purpose radioelectronic devices, including those related to the means of automated control of executive objects, relate to products of single (or practically single) use during their life cycle.

These REIs should be in constant (if possible, maximum) readiness for use during their service life.

The fulfillment of the requirements for ensuring the maximum readiness of the REI is associated with the need to take into account a number of conflicting factors.

It is necessary to preserve the resource of the product as much as possible to ensure the required service life, for which the standby mode is suitable, in which the REI can be completely or partially turned off.

On the other hand, latent failures may occur in RO, that is, at some (unknown in advance) moment of REI application, it may turn out to be inoperative.

To identify failures that occur in the RO, periodic monitoring (K) with a period τ is carried out, and the question of determining its optimal frequency arises.

With a large τ, the time spent by the REI in a state of latent failure increases, with a small value of τ, the loss of time for carrying out maintenance operations (control, PTO, APR) increases, during which the use of the REI for its intended purpose is not provided, and also the non-productive resource consumption for operations increases THAT.

Constant monitoring of the state of readiness of the product is possible in the RPG, however, with the constant presence of the product in the on state, the resource is intensively consumed and the service life is reduced, and there is also a higher, in comparison with RO, the rate of failure, which can lead to the unavailability of the product for the duration of its recovery.

To maintain the REI in readiness for use, a maintenance system (STO) is organized, which provides for the identification, elimination and prevention of failures.

Checking the functioning of the products. Periodically, control is carried out, according to the results of which either PPP is carried out on the product (when the product is in a working condition), or APR (if a product failure is detected).

In addition to positive results, conducting a PTE (PPP) or APR may be accompanied by the random introduction of hidden failures, for the detection of which it is necessary to check the functioning of the REI.

Conducting PFI allows to identify possible latent failures introduced during PTE (PPP) and APR, as well as to confirm (with sufficient duration and intensity of PFI) the required reliability characteristics of the REI.

Usually periodically monitored REIs, after monitoring and preventive maintenance or emergency repair and recovery operations, are tested for functioning before putting them into standby mode, as a rule, in full scope of performed functions and, in some cases, in order to check in the most intense real mode of operation. at the maximum, so-called "peak" power, with the possible occurrence of failures during testing and return of products for emergency repairs until the successful completion of the test cycle.

Determining the rational duration of a PFI also requires taking into account a number of conflicting factors.

In the absence (or with a short duration) of the PFI, it is possible to return an insufficiently verified REI to the standby mode when latent failures are introduced, or with an increased probability of failures in the most intense operating modes.

With an increase in the duration of the PFI, the resource consumption increases, as well as the probability (and the mathematical expectation of the number of cases) of the product returning to the APR state after the occurrence of failures in the PFI process with accompanying additional downtime of the product for emergency recovery repair.

It is necessary to determine the rational duration of the PFI in conjunction with the simultaneous determination of the rational period τ of control and maintenance based on the use of the maintenance cycle model, which takes into account the main states of the product in the RO, with the PTO and PFI, and the model of the resource consumption of the REI during the service life.

, среднее время проведения плановой предупредительной профилактики

, среднее время осуществления аварийно-восстановительных (аварийно-профилактических) работ

, и вероятность Р(τ) сохранения работоспособного состояния изделия за время τ.Models of the maintenance cycle are mathematical relationships for determining the average duration of the maintenance cycle, including the product maintenance period τ, the average time for performance monitoring

, the average time of scheduled preventive prophylaxis

, average time of emergency recovery (emergency preventive) work

, and the probability P (τ) of maintaining the operational state of the product during the time τ.

, или переходить в неработоспособное состояние и оставаться в нем среднее время

до начала контроля, при этом

, а

,Between maintenance sessions, the product can remain operational for an average time

, or go into an inoperative state and stay in it for an average time

before the start of control, while

, and

,

where: P (t) is the probability of maintaining the operational state of the product during the time t (0≤t≤τ).

During maintenance operations (K, PTO, APR) REI is in a state of unavailability for immediate use for its intended purpose.

REI readiness states include:

1) the mode of maintaining the REI in the on state in readiness for the intended use, designated as RPG;

2) the presence of the REI in a working state in standby mode, i.e. in RO, while the product is completely off.

The use of REI is possible:

1) from RPG on command;

2) from RO with transfer on command to RPG, maintaining readiness in this mode for a certain period of time and executing target tasks from RPG on command by the product;

3) from RO with the transfer of REI on command to the RPG and the immediate implementation of the target tasks after the transfer to the RPG.

In the first mode, i.e. in an RPG, in the event of a product failure, its immediate identification and the receipt of the REI for restoration is possible.

In the second mode, i.e. in the RO, the failures occurring in the RO are eliminated only at the onset of the next control session K during periodic maintenance. In this case, the state of undetected REI failure is possible in the interval between TO.

The structural model of the REI states and transitions is shown in the figure (Fig. 1).

может находиться в работоспособном состоянии (в готовности к применению), либо отказать и среднее время

находиться в неработоспособном состоянии.The main operating mode of the periodically controlled REI is the application standby mode. In standby mode, the product is off. During the period τ between successive inspections, the product average time

can be in a healthy state (ready for use), or fail and average time

be in an inoperative state.

. По результатам контроля работоспособное изделие переводится в режим периодического технического обслуживания. Вероятность осуществления данного перехода равна Р(τ).After the expiration of the time τ, the product is switched to the operability control mode, which is carried out during

... Based on the results of the control, the working product is transferred to the periodic maintenance mode. The probability of this transition is P (τ).

An inoperative product goes into emergency recovery (preventive) repair. The probability of this transition, based on the control results, is Q (τ) = 1-P (τ),

where: Q (τ) is the probability of product failure over time τ.

. По окончании ПТО осуществляется проверка функционирования изделия.An efficient product in the PHE mode is on average

... At the end of the PHE, a check of the product's functioning is carried out.

, завершаемого восстановлением работоспособного состояния изделия и проведением необходимых профилактических операций, РЭИ переводится в режим РПГ (ПФИ).After APR during average time

, completed by restoring the operational state of the product and carrying out the necessary preventive operations, the REI is transferred to the RPG mode (PFI).

изделие переводится в режим ожидания.From the RPG, with the successful execution of the PFI in the time τ _And with the probability

the product is put into standby mode.

In the PFI state, the product is tested in the operating mode, in some cases - with the maximum load, therefore, the failure rate of the REI in this mode (λ _PFI ) is much higher than the failure rate when the REI is in the storage mode in the RO state (λ _RO ).

отказа РЭИ за время испытаний τ_И изделие переходит в состояние ремонта с последующим возвращением в состояние ПФИ до успешного завершения испытаний.When it occurs with probability

REI failure during the test τ _{And the} product goes into the repair state with a subsequent return to the PFI state until the tests are successfully completed.

и его функционирование с сохранением работоспособного состояния в режиме ПФИ.The states of readiness for the use of REI in the maintenance cycle are the preservation of the operational state by the product in the standby mode for a period of time

and its functioning while maintaining an operable state in the PFI mode.

These two components of the maintenance cycle relate to the product's useful life.

,

,

не учитываются во времени полезного использования РЭИ.From the states of control K, the conduct of the PTO and the implementation of the APR, the product is not planned to be used for its intended purpose (application), therefore the time components

,

,

are not taken into account in the useful life of the REI.

The average duration of the service cycle is determined as follows / 14 /.

The TO cycle equation is represented as:

where: τ - control period;

- средняя продолжительность контроля;

- average duration of control;

- средняя продолжительность предупредительной профилактики;

- the average duration of preventive prevention;

Р (τ) is the probability of maintaining the operational state of the REI during the time τ;

- средняя продолжительность АПР;

- average duration of APR;

F (τ _И ) is a function that depends on time τ _И PFI.

The function F (τ _И ), taking into account possible cyclic transitions of the REI from the PPI state to the APR state and back, with an accuracy of three cycles, is represented by the following equation:

Where:

- среднее время сохранения для РЭИ работоспособного состояния при испытаниях в режиме ПФИ.

- the average time of maintaining the operational state for the REI during tests in the PFI mode.

равняется:The quantity

equals:

и

получаем:Taking into account the grouping of the terms of expression (2) with respect to τ _И ,

and

we get:

where: A (τ _S), B (τ _S), C (τ _S) - function of T _and.

The function А (τ _И ) has the form

The function В (τ _И ) is represented as:

The function С (τ _И ) has the following form:

,

,

в выражениях (5), (6), (7) образует убывающую геометрическую прогрессию со знаменателем

.Sequence of values

,

,

in expressions (5), (6), (7) forms a decreasing geometric progression with the denominator

...

,

,

представляется в виде:An estimate for the sum S of an infinitely decreasing progression

,

,

is presented as:

Taking into account (8), we obtain the expression for F (τ _И ):

Transforming expression (1) taking into account relation (9), we obtain the equation of the TO cycle in the form:

, τ_И и

, засчитываемых как полезное время функционирования (нахождения в работоспособном состоянии) РЭИ, имеет вид:The equation for assessing the K _TI for the maintenance cycle at values

, τ _AND and

, counted as the useful time of functioning (being in a working state) of the REI, has the form:

.Where:

...

, могут быть заданы аналитически или в виде гистограммы.Functions P (t),

, can be set analytically or in the form of a histogram.

An example of a histogram for setting the function P (t) is shown in the figure (Fig. 2).

The theoretical dependence P (t) generally obeys the following conditions.

The value of the function P (t) at t = 0 is P (t = 0) = 1. As t → ∞, the function P (t) tends to zero, that is, P (t → ∞) → 0.

, где N - число значений P(t) через интервалы времени Δτ).The function P (t) is specified by the histogram at t> 0 for the times τ _i (

, where N is the number of P (t) values at time intervals Δτ).

The value N is variable, can take on the values 1, 2, 3, etc., wherein each defined period τ includes an integer N time intervals Δτ, i.e. τ = NΔτ.

в виде гистограммы задается аналогично и подчиняется тем же граничным условиям.Function

in the form of a histogram is set similarly and obeys the same boundary conditions.

задается при t>0 для моментов времени

(

, где

- число значений

через интервалы времени Δτ_И).Similarly to P (t), the function

is given for t> 0 for the times

(

where

- number of values

at time intervals Δτ _И ).

переменная, может принимать значения 1, 2, 3 и т.д., при этом каждый определенный интервал времени τ_И включает в себя целое число

интервалов времени Δτ_И, т.е.

.Just like N, the quantity

variable, can take the values 1, 2, 3, etc., with each definite time interval τ _And includes an integer

time intervals Δτ _И , i.e.

...

For military systems, it is advisable to use the K _TI estimate from below in order to ensure a guaranteed value of the coefficient of technical use.

и

которые должны определяться с учетом возможности задания функций

и P(t) гистограммами.The estimate of the K _TI value by formula (11) includes the values

and

which should be determined taking into account the possibility of assigning functions

and P (t) by histograms.

гистограммой выражение (3) преобразуется следующим образом.To estimate from below K _TI when specifying the function

expression (3) is transformed by histogram as follows.

заменяется уравнениемExpression

is replaced by the equation

To estimate from below K _TI, when the function P (t) is set in the form of a histogram, expression (11) is transformed as follows.

заменяется уравнениемExpression

is replaced by the equation

в числителе выражения (11) обозначается какThe sum of the quantities τ _And and

in the numerator of expression (11) is denoted as

.

...

The value of τ _Ц (τ) in the denominator of expression (11), taking into account relationship (10), is represented as:

;Where:

;

.

...

Taking into account the transformations carried out, the value of K _TI is presented in the form:

The choice of the frequency of monitoring and maintenance τ for a given τ _I and other known characteristics of the REI and SRT is subject to the condition of achieving the maximum characteristics of the useful use of the REI. With frequent checks, there is a large downtime of the REI for control and prevention, with rare checks, the time that the product remains in a state of undetected failure increases. Therefore, for a given τ _And there is an intermediate between frequent and rare checks (optimal) periodicity of maintenance, at which the value of the selected characteristic of the useful use of the REI reaches a maximum.

The variable duration of the PFI τ _И is the subject of finding a compromise between the requirements for increasing the availability, high reliability of confirmation of the reliability characteristics of the electronic equipment and the need to preserve the resource of products.

In the RPG (PFI) mode, the ERI malfunctions and failures are detected at 100% coverage of the equipment by the control immediately, which determines the advantage of this mode over the RO in terms of the promptness of restoring the equipment operability and maintaining it in constant readiness for use.

Also, with an increase in τ _And , the reliability of confirmation of the reliability characteristics of the REI also increases.

.However, with an increase in τ _And , the resource of the equipment is developed faster and, accordingly, the average service life of T _SL REI decreases, which determines the expediency of determining a rational combination of τ _And and τ if it is necessary to ensure the average service life of T _SL REI is not less than the specified

...

Taking into account the intensity of resource consumption, the value of T _SL is represented in the form

where m is the number of possible modes of operation of the REI for the maintenance cycle;

- доля времени пребывания РЭИ в

-м

режиме эксплуатации за цикл ТО;

- the share of the time spent by the REI in

-m

operating mode for the maintenance cycle;

- интенсивность расходования ресурса в

-м

режиме эксплуатации.

- the intensity of resource consumption in

-m

operating mode.

должна соответствовать нормирующему условиюSum of quantities

must comply with the normalizing condition

оценивается по результатам ресурсных испытаний или эксплуатации аппаратуры - аналога РЭИ как величина, обратная длительности выработки аппаратурой ресурса ее работоспособности в соответствующем режиме.The intensity of resource consumption

is estimated based on the results of service life tests or the operation of equipment - an analogue of the REI as a value inverse to the duration of the equipment's service life in the corresponding mode.

In the absence of data on the indicators of the durability of the equipment, an analogue of the intensity of consumption of the REI resource for the corresponding operating modes, they are determined by calculation using information on the failure rate of the component elements of the equipment and the modes of their use / 16 /.

The principle of determining T _SL depending on the duration of various operating modes and the intensity of resource consumption in these modes is shown in the figure (Fig. 3).

The figure (Fig. 3, a) indicates:

λ _RAB - the intensity of REI failures in the operating mode;

λ _XP - the failure rate of REI in storage mode;

T _RAB - the average service life of the REI in the operating mode;

Т _ХР - average service life of REI in storage mode (average storage period);

t _Э - operating time of REI.

The figure (Fig. 3, b) indicates:

T _R - development (consumption) of the REI resource in percent;

U _RAB - intensity of consumption of the REI resource in the operating mode;

U _XP - intensity of REI resource consumption in storage mode;

T _PX is the average service life of the REI in the mixed operation-storage mode.

The value of T _SL is in the interval [T _RAB , T _HR ].

The average service life of T _SL REI is the smallest with the constant stay of the product in the most intense mode of operation, the largest - in the storage mode of the product.

Given τ _and resource consumption at least REI largest τ _and close to zero, and increases along with the growth _and τ.

, τ^*), где

, τ^* - рациональные значения τ_И, τ соответственно, доставляющие максимум К_ТИ при

, осуществляется в результате реализации циклической процедуры.In order to determine a rational combination of the values τ _And and τ, search for a pair (

, τ ^* ), where

, τ ^* - rational values of τ _And , τ, respectively, delivering a maximum K _TI at

, is carried out as a result of the implementation of a cyclic procedure.

в виде гистограмм, при этом функция

аналогично P(t), задается с определенным шагом, в данном случае - с шагом Δτ_И.Search preparation begins with defining the functions P (t),

in the form of histograms, while the function

analogously P (t), is defined with a certain pitch, in this case - with a pitch _and Δτ.

- в режимах РПГ (ПФИ), РО, К, ПТО(ППП), АПР.The values unchanged during the search are set

- in RPG (PFI), RO, K, PTO (PPP), APR modes.

Variable parameters are τ _And , τ.

In the initial state τ _И = 0, τ = 0.

The search for a rational combination of the values of τ _And and τ is carried out on the basis of the principle of methods of possible directions [Degtyarev Yu.I. Optimization methods. Textbook. manual for universities. M: Sov. radio, 1980] - from the initial point (τ _And , τ) admissible according to the conditions of the problem, a transition is made to a new point at which the value of the objective function is better than in the initial one.

The method of steepest descent (ascent) is used as a search method [Korshunov Yu.M. Mathematical foundations of cybernetics. Textbook. manual for universities. - 2nd ed., Rev. and add. M: Energy, 1980].

The first step is to find a job at τ = 0 _and the initial value of T = Δτ _And also consider the increase in T _and 0 to Dt _And.

,

, S,

.For a given value of τ _And , the values are determined

,

, S,

...

The quantities Р (τ), Q (τ) are determined.

The value of τ _Ц (τ) is calculated by the formula (10).

, как соотношения длительностей пребывания РЭИ в режимах РПГ (ПФИ), РО, К, ПТО(ППП), АПР за цикл ТО с учетом соблюдения нормирующего условия (16).The values are calculated

, as the ratio of the durations of the REI stay in the RPG (PFI), RO, K, PTO (PPP), APR modes for the maintenance cycle, taking into account the observance of the normalizing condition (16).

The fraction of the time the REI is in standby mode (γ _RO ) is estimated by the formula

The fraction of the time spent by the REI in the control mode K (γ _k ) is estimated by the formula

The proportion of the time spent by the REI in the PTE (PPP) mode of preventive preventive maintenance (γ _PP ) is estimated by the formula

The share of the time spent by the REI in the mode of emergency recovery (preventive) repair of the APR (γ _AB ) is determined by the formula

The fraction of the time spent by the REI in the RPG mode of maintaining readiness with the performance of checks of the operation of the product (γ _PFI ) is determined by the formula

The value of _ТСЛ , corresponding to the combination (τ _И , τ), is determined according to the formula (15).

The condition is checked

When condition (22) is satisfied, the value of τ _И increases by a step Δτ _И :

τ _{and (j + 1)} = τ _{and (j)} + Δτ _AND.

The cycle of calculations is repeated with a new value of τ _{И (j + 1)} .

A stepwise increase in τ _And continues until the onset of the condition

Upon the occurrence of the condition (23) is returned to the previous value _and τ = τ _AND -Δτ _and rational combination and the search process _and the quantities τ, τ with τ predetermined continues in a different direction - find the optimum value at τ _and τ achieved according to the principle described in [RF patent No. 2604437], i.e. the optimal value of τ is found, which delivers the maximum K _TI .

This process of alternate progress in the directions of increasing τ _And and τ continues until the next increase in τ _T by a step Δτ _And and τ - by a step Δτ becomes impossible.

,

), определяющего программу ТОЭ, принимается пара значений τ_И, τ, полученных на одном из шагов поиска и доставляющих максимум К_ТИ при соблюдении условия (22).As a rational combination (

,

), which determines the TOE program, a pair of values τ _И , τ obtained at one of the search steps and delivering the maximum K _TI under condition (22) is taken.

The proposed mathematical model is implemented in the proposed device.

A device for determining a rational program for the maintenance and operation of a product (Fig. 4) contains registers for recording initial data 19, 1-7, 29, 48, a pulse generator 33, a counter with a conversion factor of seven 36, a decoder 37, blocks of elements I 14, 20, 38-42, multiplication units 18, 12, 22, 27, unit for calculating, storing and issuing the probability of failure-free operation (the probability of maintaining a healthy state) of the product 9, units for calculating, storing and issuing the probability of failure 15, 17, unit for calculating the sum is infinite decreasing progression 21, block of OR elements 45, accumulating adders 8, 26, 46, adders 23, 30, 32, division blocks 10, 11, 16, 28, 31, 43, comparison block 47, OR element 24, AND elements 34, 35, flip-flop 44, delay element 25, block for calculating the rational value of the monitoring period 13. The diagram shows the input of the device 50 and the outputs of the device 51-54.

The input of the device 50 is connected to the trigger input of the pulse generator 33 and to the first input of the OR element 24, to the second input of which the first output of the comparison unit 47 is connected, the outputs of the second register for recording the initial data 1 are connected to the inputs of the divider of the first division unit 10, the outputs of which are connected to the inputs of the third block of elements AND 38, the outputs of the third and fourth registers for recording the initial data 2, 3 are connected, respectively, to the inputs of the divider and the divisible second block of division 11, the outputs of which are connected to the inputs of the fourth block of elements And 39, the outputs of the third register for recording the initial data 2 connected to the fifth inputs of the third adder 32, the outputs of the fifth register for recording the initial data 4 are connected to the inputs of the divider of the fourth division block 28, the outputs of which are connected to the inputs of the sixth block of elements AND 41, the outputs of the sixth register for recording the initial data 5 are connected to the first inputs of the second block multiplication 12, the outputs of which are connected to the inputs of the divisor the third dividing block 16 and the third inputs of the third adder 32, the outputs of the seventh register for recording the initial data 6 are connected to the inputs of the divider of the third dividing block 16, the outputs of which are connected to the inputs of the fifth block of elements AND 40, the outputs of the eighth register for recording the initial data 7 are connected to by the second inputs of the fourth multiplication unit 22, the outputs of which are connected to the inputs of the divisible fourth division unit 28 and to the second inputs of the third adder 32, the outputs of the ninth register for recording the initial data 29 are connected to the inputs of the divider of the fifth division unit 31, the outputs of which are connected to the inputs of the seventh block of elements And 42, the outputs of the first device for calculating, storing and issuing the probability of failure-free operation of the product 9 are connected to the first inputs of the first multiplication unit 18 and to the inputs of the second device for calculating, storing and issuing the probability of failure of the product 15, the outputs of which are connected to the inputs of the unit for calculating the sum of an infinitely decreasing progression 21, the outputs of which are connected are connected with the first inputs of the third multiplication unit 27 and with the first inputs of the first adder 23, the second inputs of which are connected to the outputs of the second unit for calculating, storing and issuing the probability of failure 17, and the output - with the first inputs of the fourth multiplying unit 22, the outputs of the first multiplying unit 18 are connected with the inputs of the second block of elements AND 20, the outputs of which are connected to the inputs of the second accumulating adder 26, the outputs of which are connected to the second inputs of the third multiplication unit 27, the outputs of which are connected to the first inputs of the third adder 32, the outputs of the second adder 30 are connected to the inputs of the divisible fifth division block 31, the outputs of the counter with a conversion factor of seven 36 are connected to the inputs of the decoder 37, the first output of which is connected to the control input of the second block of elements AND 20 and the reset input of the third accumulating adder 46, the second, third, fourth, fifth and sixth outputs of the decoder are connected to the control inputs corresponding blocks of elements I 38-42, output whose outputs are connected to the corresponding inputs of the OR 45 element block, the outputs of which are connected to the inputs of the third accumulating adder 46, the outputs of which are connected to the inputs of the sixth divisible division unit 43, the divider inputs of which are connected to the outputs of the third adder 32, the outputs of the sixth division unit 43 are connected to the inputs the comparison unit 47 and are the fourth outputs of the device 54, the seventh output of the decoder 37 is connected to the control input of the comparison unit 47, the outputs of the tenth register for recording the initial data 48 are connected to the second inputs of the comparison unit 47, the output of the OR element 24 is connected to the control input of the first block of AND elements 14, the information inputs of which are connected to the outputs of the first register for recording the initial data 19 and the inputs of the second multiplication unit 18, and the outputs are connected to the inputs of the first accumulating adder 8, the outputs of which are connected to the inputs of the device for calculating, storing and issuing the probability of failure-free operation of the product 9, with inputs of the second th adder 30, with the fourth inputs of the third adder 32, the sixth inputs of the block for calculating the rational value of the control period 13 and are the first outputs of the device 51, the input of setting to the zero state of the first accumulating adder 8 is connected to the input of setting to the zero state of the second accumulating adder 26, to the input setting to the zero state of the trigger 44 is connected to the fifth output of the unit for calculating the rational value of the monitoring period 13 and through the delay element 25 to the third input of the OR element 24, the input of setting the trigger 44 to the single state is connected to the second output of the comparator 47, the output of the pulse generator 33 is connected with the first inputs of the first and second elements And 34, 35, to the second inputs of which the unit and zero outputs of the trigger 44 are connected, respectively, the output of the second element And 35 is connected to the input of the counter with a conversion factor of seven 36, the output of the first element And 34 is connected to the seventh input of the block calculating the rational value of the period control 13, the fourth output of which is connected to the input of the pulse generator 33, the outputs of the eighth register for recording the initial data 7 are connected to the first inputs of the unit for calculating the rational value of the control period 13, to the second inputs of which the outputs of the second accumulating adder 26 are connected, the outputs of the second adder 30 are connected to the third inputs of the block for calculating the rational value of the control period 13, the outputs of the block for calculating the sum of the infinitely decreasing progression 21 are connected to the fourth inputs of the block for calculating the rational value of the control period 13, to the fifth inputs of which the outputs of the third register are connected to record the initial data 2, the first outputs of the block for calculating the rational value control period 13 are connected to the second inputs of the second multiplication unit 12 and the inputs of the second device for calculating, storing and issuing the probability of failure of the product 17, the second outputs of the unit for calculating the rational value of the control period 13 are connected to the sixth inputs of the third adder 32, from the input and are the second outputs of the device 52, the third outputs of the block for calculating the rational value of the monitoring period 13 are the third outputs of the device 53.

The block for calculating the rational value of the control period 13 (Fig. 5) contains the first and second registers for recording the initial data 57, 58, a reverse counter 55, the first, second, third and fourth multiplication blocks 56, 69, 70, 93, a block for calculating, storing and issuing the probability of maintaining the operational state of the product 63, the first, second and third adders 71, 72, 78, the accumulator 68, the division unit 79, the first, second, third, fourth, fifth and sixth blocks of elements And 59, 60, 73, 74 , 81, 89, first, second, third, fourth, fifth and sixth registers 64, 65, 75, 76, 88, 90, first, second and third comparison blocks 82, 83, 92, first and second element AND 84, 86 , flip-flop 85, first, second, third, fourth, fifth, sixth, seventh and eighth delay elements 61, 62, 67, 80, 91, 66, 77, 87.

The first inputs of the block for calculating the rational value of the control period are connected to the fourth inputs of the second adder 72 and to the first inputs of the fourth multiplication block 93, the outputs of which are connected to the fifth inputs of the second adder 72, the second inputs of the block for calculating the rational value of the control period are connected to the second inputs of the second adder 72, the third inputs of the block for calculating the rational value of the control period are connected to the first inputs of the third adder 78, to the second inputs of which the outputs of the accumulator 68 are connected, the fourth inputs of the block for calculating the rational value of the control period are connected to the second inputs of the fourth block of multiplication 93, the fifth inputs of the block for calculating the rational value of the period control is connected to the third inputs of the second adder 72, the first inputs of which are connected to the sixth inputs of the block for calculating the rational value of the control period and to the inputs of the first block of elements AND 59, the outputs of the second adder 72 are connected to the third inputs of the first adder 71, to the second inputs of which the outputs of the third multiplication unit 70 are connected, the seventh input of the unit for calculating the rational value of the monitoring period is connected to the summing input of the reverse counter 55 and through the first delay element 61 - to the control input of the unit for calculating, storing and issuing the probability of maintaining the operational state of the product 63 and the input of the second delay element 62, the output of which is connected to the control input of the second multiplier 69 and the input of the third delay element 67, the output of the third delay element is connected to the control input of the sixth block of elements AND 89 and the input of the fourth delay element 80, the output of which is connected to the control the input of the fifth block of elements AND 81 and through the fifth delay element 91 - with the control input of the third block of comparison 92, the outputs of the reverse counter 55 are connected to the first inputs of the first multiplication block 56, the outputs of the first register for recording the initial data 57 are connected to the second inputs of the first and second blocks multiplication 56, 69, the outputs of the second register for recording the initial data 58 are connected to the second inputs of the third multiplication unit 70, the outputs of the first multiplication unit 56 are connected to the inputs of the second block of elements AND 60, to the inputs of the unit for calculating, storing and issuing the probability of maintaining the operational state of the product 63 , with the first inputs of the first adder 71 and are the second outputs of the unit for calculating the rational value of the control period, the outputs of the second multiplying units 69 are connected to the inputs of the accumulating adder 68, the outputs of the unit for calculating, storing and issuing the probability of maintaining the operational state of the product 63 are connected to the first inputs of the second and third multiplication blocks 69, 70 and are the first outputs of the block for calculating the rational value of the control period, the outputs of the third adder 78 are connected to the inputs of the divisible division unit 79, the inputs of the divider of which are connected to the outputs of the first adder 71, and the outputs are connected to the inputs of the fifth block of elements AND 81, the outputs fifth block element in And 81 are connected to the inputs of the fifth register 88, the outputs of which are connected to the first inputs of the third block of comparison 92 and to the inputs of the sixth block of elements AND 89, the outputs of the sixth block of elements And 89 are connected to the inputs of the sixth register 90, the outputs of which are connected to the second inputs of the third block comparisons 92 and are the third outputs of the block for calculating the rational value of the control period, the output of the third block of comparison 92 is connected to the subtractive input of the reverse counter 55, to the control inputs of the third and fourth blocks of elements AND 73, 74 and to the inputs of the sixth and seventh delay elements 66, 77, the output of the sixth delay element 66 is connected to the control inputs of the first and second blocks of elements And 59, 60, the outputs of which are connected respectively to the inputs of the first and second registers 64, 65, the outputs of the first register 64 are connected to the inputs of the third block of elements And 73 and the first inputs of the first block comparison 82, the outputs of the second register 65 are connected to the inputs of the fourth block element o And 74 and the first inputs of the second block of comparison 83, the outputs of the third block of elements And 73 are connected to the inputs of the third register 75, the outputs of which are connected to the second inputs of the first block of comparison 82, the outputs of the fourth block of elements And 74 are connected to the inputs of the fourth register 76, the outputs of which connected to the second inputs of the second comparator 83, the output of the seventh delay element 77 is connected to the control inputs of the first and second comparison blocks 82, 83 and the input of the eighth delay element 87, the output of which is connected to the first input of the second element And 86, to the second input of which zero is connected the output of the flip-flop 85, and the output of the element And 86 is connected to the inputs of setting the reverse counter 55 to zero and the accumulator 68 and is the fifth output of the unit for calculating the rational value of the control period, the outputs of the first and second comparison units 82, 83 are connected to the first and second inputs, respectively the first element And 84, the output of which is connected to the input mustache setting in a single state of the trigger 85 and is the fourth output of the block for calculating the rational value of the control period.

The device works as follows.

In the initial state, at the fifth output of block 13 for calculating the rational value of the control period, there is a value τ = 0, at the eighth output of block 13 - the value of the probability P (τ) = 1.

At the fourth output of the block for calculating the rational value of the control period 13 - the enabling level "1" for the pulse generator 33.

Accumulating adders 8, 26, 46, flip-flop 44, as well as in the block for calculating the rational value of the control period 13, counter 55, adder 68, flip-flop 85 are in a zero state.

In register 19, the step of the duration of the PFI time interval Δτ _{И is} entered.

In register 1 - the intensity of resource consumption in standby mode U _PO .

.In register 2 - the duration of the monitoring time interval

...

In register 3 - the intensity of resource consumption in the control mode U _K.

In register 4 - the rate of resource consumption in the mode of emergency repair U _AB.

In register 5 - the duration of the time interval of planned preventive prevention

In register 6 - the intensity of resource consumption in the routine preventive maintenance mode U _PP .

In register 7 - the duration of the time interval for emergency repairs

In register 29 - the intensity of resource consumption in the mode of checking the functioning of U _PFI .

In register 48 - the specified service life of the product

In the register 57 of the block for calculating the rational value of the control period 13 - the step of the time interval for control and maintenance Δτ.

In register 58 of the block for calculating the rational value of the control period 13 - parameter

When a pulse is applied to the control input of the device 50, through the OR element 24, it will open the block of elements AND 14 and the input of the accumulating adder 8 will receive the value of the step of the PFI time interval Δτ _u from register 19. From the output of the accumulating adder 8, the current time value is fed to the input of the calculator, storing and issuing the probability of failure-free operation of the product 9, the fourth inputs of the adder 32, to the sixth input of the unit for calculating the rational value of the control period 13 and the output of the device 51.

The device for calculating, storing and issuing the probability of failure-free operation of the product 9, depending on the initial data, operates in different modes. For example, if the probabilities of failure-free operation of the product are set in the form of a histogram of statistical data, then this device is made in the form of a memory block in which data on the probabilities of failure-free operation of the product are recorded. When the current time is supplied to the input, the output will have the probability of failure-free operation of the product corresponding to this time. If the probability of failure-free operation of the product is set as a function of time, then, based on the received time code, the probability of failure-free operation of the product for a given time is calculated.

которое поступает на вход блока расчета суммы S бесконечно убывающей прогрессии 21, с выхода которого параметр S поступает на первый сумматор 23 и третий блок умножения 27. Величина τ с пятого выхода устройства 13 в качестве делимого поступает на вход блока деления 10. На вторые входы первого сумматора 23 поступает значение Q(τ)=1-Р(τ) с выхода блока 17. Значение Р(τ) для расчета Q(τ) поступает на вход блока 17 с восьмого выхода блока расчета рационального значения периода контроля 13. Сумма S+Q(τ) величин S и Q(τ) с выхода первого сумматора 23 поступает на первые входы блока умножения 22, на вторые входы которого поступит величина

с выхода восьмого регистра 7. Одновременно значение величины

с выхода регистра 7 поступает на первый вход блока расчета рационального значения периода контроля 13. Четвертый блок умножения 22 осуществляет умножение величины S+Q_(τ) и величины

Произведение этих величин с выхода блока умножения 22 поступает на вторые входы третьего сумматора 32. Одновременно произведение

выхода блока умножения 22 поступает на входы делимого четвертого блока делений 28, на вход делителя которого поступает величина U_AB с выхода пятого регистра исходных данных 4. Третий блок умножения 27 при поступлении на его входы параметра S из блока 21 и поступлении на другие входы величиныFrom the output of the device for calculating, storing and issuing the probability of failure-free operation of the product 9, the probability of the failure-free operation of the product will go to the input of the multiplication device 18, the second input of which receives the value of Δτ _And from register 19. At the same time, the probability of the failure-free operation of the product will also go to the input of device 15, where it is calculated value

which is fed to the input of the block for calculating the sum S of an infinitely decreasing progression 21, from the output of which the parameter S is fed to the first adder 23 and the third block of multiplication 27. The value of τ from the fifth output of the device 13 as a dividend is fed to the input of the dividing unit 10. At the second inputs of the first the adder 23 receives the value Q (τ) = 1-P (τ) from the output of block 17. The value of P (τ) for calculating Q (τ) is fed to the input of block 17 from the eighth output of the block for calculating the rational value of the control period 13. Sum S + Q (τ) of the quantities S and Q (τ) from the output of the first adder 23 is fed to the first inputs of the multiplication unit 22, the second inputs of which will receive the value

from the output of the eighth register 7. At the same time, the value of the

from the output of register 7 is fed to the first input of the block for calculating the rational value of the control period 13. The fourth multiplication block 22 multiplies the value S + Q _(τ) and the value

The product of these values from the output of the multiplier 22 is fed to the second inputs of the third adder 32. Simultaneously, the product

the output of the multiplication unit 22 is fed to the inputs of the divisible fourth block of divisions 28, the divisor input of which receives the value U _AB from the output of the fifth register of initial data 4. The third multiplication unit 27 when the parameter S from block 21 arrives at its inputs and the value is received at other inputs

во второй сумматор, на второй вход которого поступает величинаissues a work

into the second adder, the second input of which receives the value

, полученная во втором сумматоре 30, выдается с его выхода на входы делимого пятого блока деления 31 и на третий вход блока расчета рационального значения периода контроля 13. На входы делителя пятого блока деления 31 поступает значение величины U_ПФИ из девятого регистра исходных данных 29. Частное от деления τ на U_PO с выхода блока деления 10 поступает на блок элементов И 38. Частное от деления

на U_K с выхода блока деления 11 поступает на блок элементов И 39. Значение величины

с выхода шестого регистра 5 поступает на первые входы второго блока умножения 12, на вторые входы которого поступает значение величины Р(τ) с восьмого выхода блока расчета рационального значения периода контроля 13. Величина произведения

с выхода блока 12 поступает в качестве делимого на вход блока деления 16, на вход делителя которого поступает значение величины U_ПП с выхода седьмого регистра исходных данных 6. Частное от деления

Р(τ) на U_ПП с выхода блока деления 16 поступает на блок элементов И 40. Частное от деления

на U_AB с выхода блока деления 28 поступает на блок элементов И 41. Частное от деления

на U_ПФИ с выхода блока деления 31 поступает на блок элементов И 42. На соответствующие входы сумматора 32 поступают соответственно

τ_И,

и из блока расчета рационального значения периода контроля 13 - значение τ. В результате на выходе сумматора 32 будет значение τ_Ц (τ_И).from the output of the first accumulating adder 8. The value

, received in the second adder 30, is issued from its output to the inputs of the divisible fifth block of division 31 and to the third input of the block for calculating the rational value of the control period 13. At the inputs of the divider of the fifth block of division 31, the value of the U _PFI value from the ninth register of initial data 29 is received. from dividing τ by U _PO from the output of the division unit 10 goes to the block of elements I 38. The quotient of division

on U _K from the output of the division block 11 is fed to the block of elements I 39. The value of

from the output of the sixth register 5 is fed to the first inputs of the second multiplication block 12, the second inputs of which receive the value of P (τ) from the eighth output of the block for calculating the rational value of the control period 13. The value of the product

from the output of block 12 is supplied as divisible by the input of the division block 16, at the input of the divider of which the value of the U _PP comes from the output of the seventh register of initial data 6. The quotient of division

P (τ) on U _PP from the output of the division unit 16 goes to the block of elements I 40. The quotient of division

on U _AB from the output of the division block 28 is fed to the block of elements I 41. The quotient of division

on U _PFI from the output of the division block 31 is fed to the block of elements And 42. The corresponding inputs of the adder 32 are fed, respectively

τ _And ,

and from the block for calculating the rational value of the control period 13 - the value of τ. As a result, the output of the adder 32 will be the value of τ _Ц (τ _И ).

и на выходе накапливающего сумматора 26 будет текущее значение

. Одновременно с первого выхода дешифратора 37 импульс установит третий накапливающий сумматор 46 в нулевое состояние. По импульсу со второго выхода дешифратора 37 откроется блок элементов И 38 и значение τ÷U_PО поступит в сумматор 46. По импульсам с третьего - шестого выходов дешифратора 37 в сумматор 46 последовательно поступят

,

,

τ÷U_PO. На выходе третьего накапливающего сумматора 46 будет текущее значение суммы:When the pulse generator 33 is started, the pulses through the open element And 35 are fed to the input of the counter 36. The code from the counter 36 enters the input of the decoder 37. When the first pulse arrives from the pulse generator 33, a pulse appears at the first output of the decoder 37, which opens the block of elements I 20 and the accumulating adder 26 will receive Δτ _AND

and the output of the accumulator 26 will be the current value

... Simultaneously with the first output of the decoder 37, the pulse sets the third accumulating adder 46 to zero. By a pulse from the second output of the decoder 37, a block of elements I 38 will open and the value of τ ÷ U _PО will enter the adder 46. By pulses from the third - sixth outputs of the decoder 37, the adder 46 will be sequentially received

,

,

τ ÷ U _PO . The output of the third accumulating adder 46 will be the current value of the sum:

,

,

Если

, то с первого выхода блока сравнения 47 импульс поступит через элемент ИЛИ 24 на вход блока элементов И 14 и в сумматор 8 поступит следующее значение шага длительности временного интервала Δτ_И из регистра 19, и работа устройства будет продолжена описанным выше способом с новыми τ_И до тех пор, пока при очередном увеличении τ_И на Δτ_И не наступит состояние, когда

. В этом случае импульс со второго выхода блока сравнения 47 поступит на вход установки триггера 44 в единичное состояние, элемент И 35 закроется, а элемент И 34 откроется.which goes to the input of the divisible block of division 43, the current value τ _Ц (τ _И ) calculated in block 32 at τ = 0, calculated in block 32, will be sent to this block as a divisor. As a result, the output of the division unit 43 will be the current value of T _SL (τ _И ) at τ = 0, which will go to the inputs of the comparison unit 47 and to the output 54. When a pulse arrives from the seventh output of the decoder 37, the current value of Т _SL (τ _И ) at τ = 0 is compared with the given

If a

, then from the first output of the comparison unit 47, the pulse will arrive through the OR element 24 to the input of the block of elements AND 14 and the adder 8 will receive the next value of the step of the duration of the time interval Δτ _AND from the register 19, and the operation of the device will be continued in the manner described above with new τ _AND to until, with the next increase in τ _И by Δτ _И, a state occurs when

... In this case, the pulse from the second output of the comparison unit 47 will go to the input of setting the flip-flop 44 to a single state, the AND element 35 will close, and the AND element 34 will open.

Thus, at the output of the device 51 and at the sixth input of the block for calculating the rational value of the control period 13, there will be the calculated optimal value of τ _And at zero τ (τ = 0).

In the future, pulses from the pulse generator 33 will go through element 34 to the seventh input of the unit for calculating the rational value of the control period 13.

The pulses are sequentially fed to the summing input of the counter 55, the output of which will be the time code. The time code is fed to the input of the multiplication unit 56, the second input of which receives the value of the duration of the time interval Δτ from the register 57. From the multiplication unit 56, the current time value is fed to the input of the device for calculating, storing and issuing the probability of failure-free operation of the product 63, the first input of the adder 71 and the second output of the block for calculating the rational value of the control period 13. The device for calculating, storing and issuing the probability of failure-free operation of the product 63, depending on the initial data, operates in different modes. For example, if the probabilities of failure-free operation of the product are set in the form of a histogram of statistical data, then this device is made in the form of a memory block in which data on the probabilities of failure-free operation of the product are recorded. When the current time is supplied to the input, the output will have the probability of failure-free operation of the product corresponding to this time. If the probability of failure-free operation of the product is set as a function of time, then based on the received time code, the probability of failure-free operation of the product for a given time is calculated. When the output of the delay element 61 arrives at the control input of the device for calculating, storing and issuing the probability of the product's trouble-free operation 63, the probability of the product's trouble-free operation will go to the input of the multiplier 69, the second input of which receives the value of Δτ from register 57. At the same time, the probability of the product's trouble-free operation will be received and to the input of the multiplication unit 70, the second input of which receives the value of the coefficient G from the register 58. The output of the multiplication unit 70 will be the value G x P (τ).

Having passed the delay element 62, the pulse will go to the control input for the output of the multiplier 69. According to this signal, the result of the multiplication from block 69 will be fed to the input of the accumulating adder 68. As a result, the accumulating adder 68 will have the value

and the output of the adder 78 will appear -

- numerator of expression (14).

из сумматора 72, т.к. на его входы поступают:The inputs of the adder 71 receive the current time from the output of the multiplication unit 56, the value from the output of the multiplication unit 70 and the value of the coefficient L

from adder 72, since its inputs receive:

с шестого входа блока расчета рационального значения периода контроля 13 из сумматора 8;at the first entrance -

from the sixth input of the block for calculating the rational value of the control period 13 from the adder 8;

со второго входа блока расчета рационального значения периода контроля 13 из сумматора 26;to the second entrance -

from the second input of the block for calculating the rational value of the control period 13 from the adder 26;

с пятого входа блока расчета рационального значения периода контроля 13 из регистра 2;to the third entrance -

from the fifth input of the block for calculating the rational value of the control period 13 from register 2;

с первого входа блока расчета рационального значения периода контроля 13 из регистра 7;to the fourth entrance -

from the first input of the block for calculating the rational value of the control period 13 from register 7;

с выхода блока 93.to the fifth entrance -

from the output of block 93.

As a result, the output of the adder 71 will be the value τ + GP (τ) + L - the denominator of expression (14).

The input of the division unit 79 will receive the value from the output of the adder 78 as a dividend, and the value from the output of the adder 71 will be received as the divisor. The output of the division unit 79 will be the current value of the technical utilization factor, which will be written according to the signal from the output of the delay element 80 through the block of elements And 81 in register 88 of the current value of the coefficient of technical use. Earlier, on a signal from the output of the delay element 67 through the block of elements And 89, the value from register 88 will be written to the register of the previous value of the technical utilization factor 90. The current and previous values of the technical utilization factor are compared in the comparison unit 92. If the current value of the technical utilization factor is greater than the previous one, then there will be no signal at the output of the comparison unit 92, and the operation of the unit for calculating the rational value of the monitoring period will be continued as described above. If the current value of the technical utilization factor is less than or equal to the previous one, then a signal will appear at the output of the comparison unit 92, which will go to the subtractive input of the counter 55, to the control inputs of the element blocks And 73, 74 and to the inputs of the delay elements 66, 77.

и τ. В этом случае на выходах блоков сравнения 82 и 83 появятся сигналы, которые поступят на входы элемента И 84. С выхода элемента И 84 сигнал установит триггер 85 в единичное состояние, закрыв элемент И 86, и поступит на четвертый выход блока расчета рационального значения периода контроля 13 и остановит генератор импульсов 33. На этом работа устройства будет завершена.The contents of registers 64, 65 will be rewritten through blocks of elements I 73, 74 into registers 75, 76, then the current values of τ _AND from the sixth input of the block for calculating the rational value of the control period 13 from adder 8 and calculated in block 56 τ through blocks of elements I 59, 60 , according to the signal from the output of the delay element 66 will be written to registers 64, 65, respectively. Then, according to the signal from the output of the delay element 77, the current and previous values of τ _And and τ in the comparison units 82, 83 are compared. If the current value of τ _And or τ is less than the previous , then at the output of the element And 84 there will be no signal and the trigger 85 will remain in the zero state and the signal in the output of the delay element 87 through the open element And 86 will go to the fifth output of the block for calculating the rational value of the control period 13 and set the flip-flop 44, adders 8 and 26 to zero state, then the signal through the delay element 25, the OR element 24 will open the block of elements AND 14 and the accumulating adder 8 will receive from the register 19 the value of the duration of the time interval ala Δτ _И and the operation of the device will be continued in the manner described above until the current values of τ _И and τ are equal to the previous values

and τ. In this case, signals will appear at the outputs of the comparison units 82 and 83, which will be fed to the inputs of the AND element 84. From the output of the AND element 84, the signal will set the trigger 85 to a single state, closing the AND element 86, and will go to the fourth output of the block for calculating the rational value of the control period 13 and stops the pulse generator 33. This completes the operation of the device.

As a result, at the first output of device 51 there will be a code of the optimal duration τ _AND PFI of the product, at the second output of device 52 there will be a code of the optimal control period, at the third output of device 53 - the corresponding value of the coefficient of technical use K _TI (τ _И , τ), and at the fourth output output 54 - the corresponding value of T _SL (τ _И , τ).

- достигнута.Thus, the aim of the invention is to improve the accuracy of determining the monitoring and maintenance period τ and the duration of the PFI τ _I by taking into account the consumption of the REI technical resource in various operating modes (RO, maintenance and PFI) during the service life, which makes it possible to ensure, with the obtained combination, τ and τ _{And the} achievement of the maximum coefficient of technical use K _{TI of the} product, provided that the average service life of T _SL REI is not less than the specified

- achieved.

Claims (1)

A device for determining a rational program for the maintenance and operation of a product, containing a pulse generator, a unit for calculating, storing and issuing the probability of a failure-free operation of a product, the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth and tenth registers for recording initial data , counter with a conversion factor of seven, decoder, first, second, third, fourth, fifth, sixth, seventh, blocks of elements AND, first, second, third and fourth multiplication blocks, first and second blocks for calculating, storing and issuing the probability of product failure, block for calculating the sum of an infinitely decreasing progression, block of OR elements, first, second and third accumulating adders, first, second and third adders, first, second, third, fourth, fifth and sixth division blocks, comparison block, OR element, delay element, and the input of the device is connected to the start input of the pulse generator and to the first input of the OR element, to the second input of which the first is connected the output of the comparison unit, and to the third input - the output of the delay element, the outputs of the device for calculating, storing and issuing the probability of failure-free operation of the product are connected to the inputs of the first multiplication block and to the inputs of the first block of calculating, storing and issuing the probability of product failure, the outputs of the second register for recording the initial data are connected to the inputs of the divider of the first division block, the outputs of which are connected to the inputs of the third block of AND elements, the outputs of the third and fourth registers for recording the initial data are connected, respectively, to the inputs of the dividend and divider of the second division block, the outputs of which are connected to the inputs of the fourth block of AND elements, the outputs of the third register for recording the initial data are connected to the fifth inputs of the third adder, the outputs of the fifth register for recording the initial data are connected to the inputs of the divider of the fourth division block, the outputs of which are connected to the inputs of the sixth block of elements AND, the outputs of the sixth register for recording the initial data are connected to the first inputs of the second multiplication block, the outputs of which are connected to the inputs of the dividend of the third division block and the third inputs of the third adder, the outputs of the seventh register for recording the initial data are connected to the inputs of the divider of the third division block, the outputs of which are connected to the inputs of the fifth block of elements AND, the outputs of the eighth register for recording the initial data are connected to the second inputs of the fourth multiplication block, the outputs of which are connected to the inputs of the divisible fourth division block and to the second inputs of the third adder, the outputs of the ninth register for recording the initial data are connected to the inputs of the divider of the fifth division block, the outputs of which are connected to the inputs of the seventh block of elements AND, the outputs of the first block for calculating, storing and issuing the probability of product failure are connected to the inputs of the block for calculating the sum of an infinitely decreasing progression, the outputs of which are connected to the first inputs of the third multiplication block and to the first inputs of the first adder, the second inputs of which are connected to the outputs of the second calculation block that, storing and issuing the probability of product failure, and the output with the first inputs of the fourth multiplication block, the outputs of the first multiplication block are connected to the inputs of the second block of AND elements, the outputs of which are connected to the inputs of the second accumulating adder, the outputs of which are connected to the second inputs of the third multiplication block, the outputs of which are connected to the first inputs of the third adder and to the second inputs of the second adder, the outputs of which are connected to the inputs of the divisible fifth division block, the outputs of the counter with a conversion factor of seven are connected to the inputs of the decoder, the first output of which is connected to the control input of the second block of elements AND and the reset input the third accumulator, the second, third, fourth, fifth and sixth outputs of the decoder are connected to the control inputs, respectively, of the third, fourth, fifth, sixth and seventh blocks of AND elements, the outputs of which are connected to the corresponding inputs of the OR element block, the outputs of which are connected to the inputs third o accumulating adder, the outputs of which are connected to the inputs of the divisible sixth division block, the divider inputs of which are connected to the outputs of the third adder, the outputs of the sixth division block are connected to the first information inputs of the comparison unit, the seventh output of the decoder is connected to the control input of the comparison unit, the outputs of the tenth register for writing of the initial data are connected to the second information inputs of the comparison unit, the output of the OR element is connected to the control input of the first block of AND elements, the information inputs of which are connected to the outputs of the first register to write the initial data, and the outputs are connected to the inputs of the first accumulating adder, the outputs of the first register to write the initial data are connected to the second inputs of the first multiplication unit, the outputs of the first accumulating adder are connected to the inputs of the first device for calculating, storing and issuing the probability of failure-free operation of the product, with the fourth inputs of the third adder and with the inputs of the second adder, which is characterized by it is that the first and second elements AND, a trigger, a block for calculating the rational value of the control period are introduced into it, and the outputs of the first accumulating adder are connected to the sixth inputs of the block for calculating the rational value of the control period and are the first outputs of the device, the input of the installation to the zero state of the first accumulating the adder is connected to the input of setting to the zero state of the trigger, the input of setting to the zero state of the second accumulating adder, the input of the delay element and is connected to the fifth output of the block for calculating the rational value of the control period, the input of setting to the single state of the trigger is connected to the second output of the comparison unit, the output of the pulse generator connected to the first inputs of the first and second elements AND, to the second inputs of which are connected, respectively, the unit and zero outputs of the trigger, the output of the second element And is connected to the input of the counter with a conversion factor of seven, the output of the first element And is connected to the seventh input of the block pa counting the rational value of the control period, the fourth output of which is connected to the input of the pulse generator, the outputs of the eighth register for recording the initial data are connected to the first inputs of the block for calculating the rational value of the control period, to the second inputs of which the outputs of the second accumulating adder are connected, the outputs of the second adder are connected to the third inputs the block for calculating the rational value of the control period, the outputs of the block for calculating the sum of an infinitely decreasing progression are connected to the fourth inputs of the block for calculating the rational value of the control period, to the fifth inputs of which the outputs of the third register are connected to record the initial data, the first outputs of the block for calculating the rational value of the control period are connected to the second inputs the second multiplication block and the inputs of the second block for calculating, storing and issuing the probability of product failure, the second output of the block for calculating the rational value of the control period is connected to the input of the dividend of the first division block and to the sixth input mi of the third adder, the second and third outputs of the block for calculating the rational value of the control period are the second and third outputs of the device, the block for calculating the rational value of the control period contains the first and second registers for recording the initial data, a reverse counter, the first, second, third and fourth multiplication blocks, unit for calculating, storing and issuing the probability of maintaining the operational state of the product, the first, second and third adders, the accumulating adder, the division unit, the first, second, third, fourth, fifth and sixth blocks of elements AND, the first, second, third, fourth, fifth and sixth registers, first, second and third comparison blocks, first and second AND elements, flip-flop, first, second, third, fourth, fifth, sixth, seventh and eighth delay elements, and the first inputs of the block for calculating the rational value of the control period are connected to the fourth inputs the second adder and with the first inputs of the fourth multiplication block, the outputs of which are connected to the fifth the inputs of the second adder, the second inputs of the block for calculating the rational value of the control period are connected to the second inputs of the second adder, the third inputs of the block for calculating the rational value of the control period are connected to the first inputs of the third adder, to the second inputs of which the outputs of the accumulating adder are connected, the fourth inputs of the block for calculating the rational value of the period control is connected to the second inputs of the fourth multiplication block, the fifth inputs of the block for calculating the rational value of the control period are connected to the third inputs of the second adder, the first inputs of which are connected to the sixth inputs of the block for calculating the rational value of the control period and the inputs of the first block of elements AND, the outputs of the second adder are connected to the third by the inputs of the first adder, the seventh input of the block for calculating the rational value of the control period is connected to the summing input of the reverse counter and through the first delay element to the control input of the block for calculating, storing and issuing the probability maintaining the operational state of the product and the input of the second delay element, the output of which is connected to the control input of the second multiplication unit and the input of the third delay element, the output of the third delay element is connected to the control input of the sixth block of AND elements and the input of the fourth delay element, the output of which is connected to the control input of the fifth block of AND elements and through the fifth delay element - with the control input of the third comparison block, the outputs of the reverse counter are connected to the first inputs of the first multiplication block, the outputs of the first register for recording the initial data are connected to the second inputs of the first and second multiplication blocks, the outputs of the second register for recording the initial data are connected to the second inputs of the third multiplication block, the outputs of which are connected to the second inputs of the first adder, the outputs of the first multiplication block are connected to the inputs of the second block of elements AND, to the inputs of the block for calculating, storing and issuing the probability of maintaining a healthy state product, with the first inputs of the first adder and are the second outputs of the block for calculating the rational value of the control period, the outputs of the block for calculating, storing and issuing the probability of maintaining the operational state of the product are connected to the first inputs of the second and third multiplication blocks and are the first outputs of the block for calculating the rational value of the control period , the inputs of the accumulating adder are connected to the outputs of the second multiplication block, the outputs of the third adder are connected to the inputs of the dividend division block, the divider inputs of which are connected to the outputs of the first adder, and the outputs to the inputs of the fifth block of AND elements, the outputs of the fifth block of AND elements are connected to the inputs of the fifth register , the outputs of which are connected to the first inputs of the third comparison block and to the inputs of the sixth block of AND elements, the outputs of the sixth block of AND elements are connected to the inputs of the sixth register, the outputs of which are connected to the second inputs of the third comparison block and are the third outputs of the ration calculation block of the control period, the output of the third comparison unit is connected to the subtractive input of the reverse counter, to the control inputs of the third and fourth blocks of I elements and to the inputs of the sixth and seventh delay elements, the output of the sixth delay element is connected to the control inputs of the first and second blocks of I elements, outputs which are connected respectively to the inputs of the first and second registers, the outputs of the first register are connected to the inputs of the third block of AND elements and the first inputs of the first comparison block, the outputs of the second register are connected to the inputs of the fourth block of AND elements and the first inputs of the second comparison block, the outputs of the third block of AND elements are connected with the inputs of the third register, the outputs of which are connected to the second inputs of the first comparison block, the outputs of the fourth block of elements AND are connected to the inputs of the fourth register, the outputs of which are connected to the second inputs of the second comparison block, the output of the seventh delay element is connected to the control inputs of the first o and the second comparison blocks, the outputs of the first and second comparison blocks are connected respectively to the first and second inputs of the first AND element, the output of which is connected to the input of the setting in the single state of the trigger and is the fourth output of the block for calculating the rational value of the control period, the zero output of the trigger is connected to the second the input of the second AND element, the first input of which through the eighth delay element is connected to the output of the seventh delay element, the output of the second AND element is connected to the inputs of setting the reverse counter and accumulating adder to the zero state and is the fifth output of the block for calculating the rational value of the control period.

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