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WO2012038890A1 - Dispositif de mesure et méthode de mesure associée - Google Patents

Dispositif de mesure et méthode de mesure associée Download PDF

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Publication number
WO2012038890A1
WO2012038890A1 PCT/IB2011/054113 IB2011054113W WO2012038890A1 WO 2012038890 A1 WO2012038890 A1 WO 2012038890A1 IB 2011054113 W IB2011054113 W IB 2011054113W WO 2012038890 A1 WO2012038890 A1 WO 2012038890A1
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WO
WIPO (PCT)
Prior art keywords
plate
connection point
position transducers
arm
distinct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2011/054113
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English (en)
Inventor
Andrea Mura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Politecnico di Torino
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Politecnico di Torino
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Politecnico di Torino filed Critical Politecnico di Torino
Publication of WO2012038890A1 publication Critical patent/WO2012038890A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge

Definitions

  • the present invention relates to devices for measuring the deformations and displacements of a mechanical component. More precisely, the present invention regards a measuring device that employs a number of position transducers.
  • Measuring the displacements and deformations of an object that is subject to a load is an operation that is frequently made with a rather low precision on account of the intrinsic limits of the measuring devices themselves.
  • the measuring devices currently available frequently only enable very simplified measurements to be made .
  • the object of the present invention is to overcome the technical problems described previously.
  • the object of the present invention is to provide a device for measuring displacements and deformations with a higher measuring precision as compared to devices of a known type and at the same time for detecting any state of deformation irrespective of its complexity.
  • FIG. 1 is a perspective view of a measuring device according to a first embodiment of the present invention
  • FIG. 2A is a schematic representation of a measuring device according to the present invention, comprising references for kinematic calculation;
  • FIG. 2B is a perspective view of the device of Figure 1 during the execution of a measurement
  • FIG. 3 is a perspective view of a variant of the measuring device of Figure 1;
  • FIG. 4 illustrates a measuring device according to a second embodiment of the present invention .
  • the reference number 1 designates a measuring device according to a first embodiment of the present invention.
  • the device 1 comprises a first plate 2, a second plate 4, and first, second, third, fourth, fifth, and sixth position transducers designated by the reference numbers 6, 8, 10, 12, 14, 16, respectively.
  • the aforesaid position transducers 6, 8, 10, 12, 14, 16 are set between the first and second plates 2, 4, connect the latter and are transducers of a linear type; i.e., each one is provided for detecting rectilinear displacements along its own axis, namely, H6, H8, H10, H12, H14, H16, respectively.
  • Each transducer is preferably of the type comprising a first body and a second body that are able to slide with respect to one another (for example, a stem and a tubular body that receives the aforesaid stem) .
  • a corresponding type of position transducer is the LVDT (linear variable differential transformer) transducer, which can hence be used on the device 1.
  • the plates 2, 4, in this embodiment, are both substantially C-shaped, namely:
  • the first plate 2 comprises a first arm 18 and a second arm 20, which are parallel to one another and are joined together by a first header 22;
  • the second plate 4 in a similar way, comprises a third arm 24 and a fourth arm 26, which are parallel to one another and are joined together by a second header 28.
  • the headers 22, 28 are preferably orthogonal to the corresponding arms.
  • the six position transducers 6, 8, 10, 12, 14, 16 are arranged between the plates 2, 4, grouped in pairs, each arranged in a V-shaped formation.
  • the first and second position transducers 6, 8 each comprise a first end 30, 32, respectively, and a second end 34, 36, respectively.
  • the first ends 30, 32 are connected, respecti ely, at a first connection point A and a second connection point B in the proximity of opposite ends of the arm 18.
  • connection point corresponds substantially to an intersection between geometrical entities associated to the components of the device 1, said intersection being associated to each coupling between the transducers 6, 8, 10, 12, 14, 16 and the plates 2, 4. This means that each position transducer is coupled to the plates 2, 4 by means of respective joints arranged at the aforesaid connection points .
  • the first ends 30, 32 are consequently connected to the arm 18 by means of a first joint Jl and a second joint J2, respectively, represented schematically, which are of a spherical type.
  • the second ends 34, 36 are instead both connected to the arm 24 of the second plate 4 in a third connection point C by means of a single third joint J3 (which basically comprises a double joint of a spherical type) .
  • connection point C The projection on the plate 2 of the connection point C is in a position intermediate between the connection points A, B when the plates 2, 4 are parallel to one another. In this way, a substantially V-shaped geometry is obtained, the vertex of the V coinciding with the point C.
  • the third and fourth position transducers 10, 12 comprise a respective first end 38, 40 and respective second ends 42, 44.
  • the first ends 38, 40 are connected to the header 22 by means of a fourth joint J4 and a fifth joint J5, respectively, of a spherical type set at a fourth connection point D and a fifth connection point E that are distinct from one another and located in the proximity of opposite ends of the header 22 itself.
  • the second ends 42, 44 are instead both connected to the header 28 of the plate 4 in a sixth connection point F by means of a single sixth joint J6 (which basically comprises a double joint of a spherical type) .
  • connection point F on the plate 2 is in a position intermediate between the connection points D, E when the plates 2, 4 are parallel to one another.
  • the fifth and sixth position transducers 14, 16 comprise a respective first end 46, 48 and a respective second end 50, 52.
  • the first ends 46, 48 are connected to the second arm 20 by means of a seventh joint J7 and an eighth joint J8, respectively, of a spherical type set at a seventh connection point G and an eighth connection point H that are distinct from one another and located in the proximity of opposite ends of the arm 20.
  • the second ends 50, 52 are both connected to the arm 26 in a ninth connection point I by means of a single ninth joint J9 (which basically comprises a double joint of a spherical type) .
  • connection point I on the plate 2 is in a position intermediate between the connection points G, H when the plates 2, 4 are parallel to one another.
  • the three pairs of position transducers 6-8, 10-12, and 14-16 are arranged to define an array with a substantially C-shaped development, each along a different portion of the two plates 2, 4, leaving the area comprised between the arms 18, 24 and 20, 26 and facing the headers 22, 28 completely free.
  • the arrangement of the position transducers 6, 8, 10, 12, 14 does not present circular symmetry: said characteristic, as will emerge clearly from the ensuing description, is particularly advantageous during processing of the data to obtain measurements.
  • first plate 2 and a second plate 4 which are basically C-shaped and substantially reproduce the development of the array of the position transducers 6, 8, 10, 12, 14, 16, for the purposes of the present invention the shape of the plates 2, 4 can vary widely.
  • the priority aspect is the C-shaped geometry of the array of the position transducers 6, 8, 10, 12, 14, 16.
  • connection points G, E and B, D are arranged on the plate 2 in such a way that if the straight lines joining the points G-H, E-D and A-B were to be drawn and the intersections between them were to be identified,
  • the points G and E are equidistant from a first intersection II between the straight lines joining the points G, H and D, E;
  • connection points C, F, I is chosen in such a way that in conditions of parallelism between the plates 2, 4 the axes of each pair of transducers 6-8, 10-12, 14-16 will define a respective plane orthogonal to the plates 2, 4.
  • a fixed cartesian reference system is introduced, designated by 0, which is fixed with respect to the device 1 and is of a right-handed type and comprises three orthogonal axes x, y, z, where the axes x and y define a plane substantially parallel to the plate 2 (and to the plate 4 when this is parallel to the plate 2) .
  • the system 0 is preferably centred at the intersection II.
  • an object the deformations and displacements of which are to be measured for example under load or following upon an assembly in which it is necessary to deform the object, is inserted between the plates 2, 4, exploiting the free area between the arms of the latter.
  • a flexible connection element made of metal braid for automotive uses designated by the letter S, is considered.
  • the flexible connection element S is coupled to the device 1 by arranging the plates 2, 4 substantially bestriding it.
  • a particular shape of the areas of connection between the arms and the header of each individual plate is provided so as to conform better to the geometry of the component being measured.
  • the headers have an edge shaped like the arc of a circumference that reproduces the cylindrical geometry of the flexible connection element S. This is aimed at achieving a coupling of a rigid type between the plates 2, 4 and the element S, i.e., such that the displacements of the element S are not uncoupled from those of the plates 2, 4.
  • the second plate 4 is movable with respect to the first plate 2 according to six degrees of freedom. Said degrees of freedom comprise, with respect to the reference system 0,
  • the movement of the plate 4 with respect to the plate 2 is possible thanks to the lengthening and contraction of the position transducers 6, 8, 10, 12, 14, 16, as well as to rotations thereof with respect to the plates 2, 4 themselves.
  • the lengthenings and contractions of the position transducers 6, 8, 10, 12, 14, 16, designated respectively by 56, 58, 510, 512, 514, 516, take place in directions joining the first and second ends of each position transducer 6, 8, 10, 12, 14, 16 and can both have the directions illustrated in the figures.
  • any displacement or deformation that the flexible connection element S has undergone results in a movement of the second plate 4 with respect to the first plate 2.
  • - ⁇ , ⁇ 2, ⁇ 3 are angles comprised, respectively, between the transducer 16 and the straight line joining the points G and H, between the transducer 12 and the straight line joining the points E, D and between the transducer 8 and the straight line joining the points A, B;
  • connection points A and B, D and E, G and H are the distances being the same as one another
  • connection point I is a first set of co-ordinates referred to the connection point I with respect to the reference system 0;
  • connection point F is a second set of co-ordinates referred to the connection point F with respect to the reference system 0;
  • connection point C is a third set of co-ordinates referred to the connection point C with respect to the reference system 0;
  • connection points I, F and F, C the distances being the same as one another.
  • each pair of position transducers (6-8, 10-12, 14-16) are orthogonal to the plate 2 (and to the plate 4) when they are parallel.
  • angles ⁇ , ⁇ 2, ⁇ 3 can be computed using the following relations:
  • the system made up of Eqs. (4), (5) and (6) has nine unknowns. Three unknowns can be obtained from Eqs. (1), (2) and (3), so that there remain still six unknowns to find.
  • n (yi -y 3 ) 2
  • the inventor has found that the correct solution is the one with the positive sign of the discriminant) . i ⁇ ⁇ ⁇
  • the element S undergoes a measurement by means of the device 1 in a laboratory environment, it is possible to fix the portion of the element S that is located in a position corresponding to the plate 2 on the same support as that on which the plate 2 itself is fixed.
  • the coupling in this way would be indirect, and moreover it would be possible to arrange a "universal" plate 2, i.e., one designed for making measurements on different objects which can be combined to different plates 4 shaped according to the geometry of the object on which the measurement is made .
  • a measuring method that, in general terms, comprises the following steps:
  • the implementation of said measuring method is very simple and advantageous both in computational terms and in mechanical terms.
  • the non- circular symmetry with which the position transducers are arranged enables a solution of a semi-numeric type to be obtained, such as the one described previously, for the system of equations that is considerably simpler (hence less burdensome from the computational standpoint) as compared to the case where the transducers 6, 8, 10, 12, 14, 16 were arranged according to circular symmetry.
  • the algorithm used for solving the system of equations calculates iteratively only one of the nine unknowns, subsequently obtaining in an analytical way the further unknowns starting from the numeric calculation of the first. This enables a reduction in the computational power required, or, in a dual way, results can be obtained in a shorter times given the same computational power.
  • the device 1 can be used either in the laboratory (in which case, the electronic processing unit can be a fixed station with a computer) or on board a vehicle or a structure of which it is intended to measure the deformations in real time (in which case, the electronic processing unit can be an electronic control unit installed on board the vehicle or the structure) .
  • the flexible connection element S it is possible to couple thereto the device 1 directly in the underbody of the vehicle, connecting it with a control unit of the vehicle itself possibly provided for co-operating with other systems of the vehicle.
  • the constraints necessary to maintain the position of the first plate 2 can be easily reproduced on board the vehicle (or any structure on which the device 1 is installed) .
  • the device 1 can also be used as global position transducer for the measurement of displacements with respect to a fixed reference, for example by rigidly coupling the plate 4 to a structure or to an object (possibly movable) and fixing the plate 2 to a different object or structure that functions as fixed reference.
  • a fixed reference for example by rigidly coupling the plate 4 to a structure or to an object (possibly movable) and fixing the plate 2 to a different object or structure that functions as fixed reference.
  • the device 1 according to the invention thus presents a series of considerable advantages.
  • the structure of the plates 2, 4 and the consequent arrangement of the transducers with respect thereto is without the circular symmetry, which enables an area to be obtained in which the object of which the deformations are to be measured can be easily arranged.
  • the possibility of solving the system of eguations that describes the kinematics of the device 1 in a semi-numeric way enables a drastic reduction in the computing times, rendering it possible, given the same computational power installed on the electronic processing unit connected to the device 1, to acquire and process data in a shorter time .
  • an advantageous variant of the instrument 1 is designated by the reference number 1' . All the components that are identical to those described previously are designated by the same reference numbers.
  • the difference of the device 1 ' with respect to the device 1 lies only in the fact that the third and fourth position transducers 10, 12 are arranged in a reversed way with respect to the instrument 1.
  • the axes H10, H12 define a plane orthogonal to the first plate 2.
  • first ends 38, 40 of the transducers 10, 12 are connected to the first header 20 in a single connection point D' by means of a single fourth joint J4 ' (which basically comprises a double joint of a spherical type), whereas the second ends 42, 44 are connected to the second plate 4 at the second header 28 in two separate connection points E', F' by means of respective joints J5 ' J6 ' of a spherical type.
  • the position of the connection point D' is such that its projection on the plate 4 is in an intermediate position with respect to the points E', F' when the plates 2, 4 are parallel.
  • Said arrangement enables further optimization of the overall dimensions of the position transducers and widening of the area dedicated to insertion of an object on which a measurement is to be made.
  • a second embodiment of a measuring device according to the present invention is designated by the reference number 100 (appearing in this figure is also the element S partially sectioned to show some components that otherwise would not be visible ) .
  • the measuring device 100 comprises a first plate 102, a second plate 104, and six wire extensometers 106, 108, 110, 112, 114, 116.
  • the aforesaid wire extensometers 106, 108, 110, 112, 114, 116 are set between the first and second plates 2, 4, connect the latter, and comprise respective drums D106, D108, DUO, D112, D114, D116, which have respective axes H016, H108, H110, H112, H114, H116 and wound on which are corresponding wires W106, W108, WHO, W112, W114, W116 made of a substantially inextensible material.
  • the first plate 102 comprises, in this embodiment, a base element 118 of a quadrilateral shape having a through hole 120 shaped for receiving the element S or any object on which the measurement is to be made, and a first bracket 122, a second bracket 124, a third bracket 126, and a fourth bracket 128, which are fixed to the base element 118 in positions corresponding to four vertices of a quadrilateral, here coinciding with the vertices of the base element 118.
  • the first and second brackets 122, 124 are substantially L-shaped and are fixed so as to have, respectively, a first flap 130 and a second flap 132 orthogonal to the base element 118. They are moreover aligned to one another and are on one and the same side with respect to the brackets 126, 128.
  • the third bracket 126 is of an angular type; i.e., it comprises a third flap 134 and a fourth flap 136, which are mutually orthogonal, and is fixed to the base element 118 in such a way that the flaps 134, 136 are orthogonal thereto.
  • the fourth bracket 128 is identical to the third bracket 126 and comprises a fifth flap 138 and a sixth flap 140, which are mutually orthogonal, and is fixed to the base element 118 in such a way that the aforesaid flaps 138, 140 are orthogonal thereto.
  • the sequence of the flaps 130, 134, 136, 138, 140, 132 defines in this way an array with a substantially C-shaped geometry, as may be appreciated from Figure 4, defined substantially by three orthogonal stretches comprising:
  • the plate 102 further comprises six supporting elements 142, 144, 146, 148, 150, 152 fixed, respectively, to the flaps 130, 134, 136, 138, 140, 132.
  • the second plate 104 in this embodiment, is basically configured as an annular element comprising a first portion 154 and a second portion 156, which can be coupled by means of threaded connections and carry a fifth bracket 158, a sixth bracket 160, and a seventh bracket 162, arranged at the vertices of an isosceles triangle (the brackets 158, 162 are opposite to one another) . Finally fixed in a removable way to each bracket is a respective clamping plate, respectively, 164, 166, 168.
  • the drums D106, D108, DUO, D112, D114, D116 of the wire extensometers are connected to the first plate 102 by means of fixing to the supporting elements, respectively, 142, 144, 146, 148, 150, 152.
  • the wire extensometers are arranged according to a C-shaped geometry and grouped in the pairs 106-108, 110-112 and 114-116.
  • the drums D106, D108 are fixed, respectively, to the supporting elements 142, 144 at first and second connection point A' ', B' ' that are distinct from one another. Hence, they are connected to the plate 102 along the first stretch of the aforementioned array of flaps of the brackets.
  • each connection point on the plate 102 is defined by the intersection of the axis of a drum with the corresponding supporting element and is understood as geometrical reference, set in a position corresponding to which is a joint between a wire extensometer and the plate 102 (preferably, a threaded connection, just like the remaining ⁇ extensometers ) .
  • connection point C' ' For the plate 104 the presumed intersection of the convergent wires on each of the brackets 158, 160, 162 is assumed as connection point.
  • connection is made by fastening the clamping plate 164 on the bracket 158 (other solutions are in any case possible) pinching the two wires W106, W108 that converge on the bracket.
  • the drums DUO, D112 are fixed, respectively, to the supporting elements 146, 148 in a position corresponding to a fourth connection point D' ' and a fifth connection point E 1 1 , which are distinct from one another (hence they are connected to the plate 102 along the second stretch of the aforementioned array of flaps of the brackets), whereas the corresponding wires WHO, W112 are connected to the plate 104, in particular to the bracket 160, in a single sixth connection point F ' ' by means of tightening of the clamping plate 166.
  • drums D114, D116 are fixed, respectively, to the supporting elements 150, 152 in a position corresponding to a seventh connection point G' ' and an eighth connection point H' ' that are distinct from one another (hence, they are connected to the plate 102 along the third stretch of the aforementioned array of flaps of the brackets) , whereas the corresponding wires W114, W116 are connected to the plate 104, in particular to the bracket 162, in a single ninth connection point I' ' by tightening the clamping plate 168.
  • each pair of convergent wires preferably defines a plane orthogonal to the base element 118.
  • connection points are hence preferably identical to the one illustrated in Figure 2A (it is simply necessary to replace the points A, B, C D, E, F, G, H, I with the corresponding points A' ', B ' ' , C' ', D' ', E' ', F' ', G' ', H' ', I' ') ? as likewise identical is the choice of the reference system 0, which enables application of the system of equations described previously.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

L'invention concerne un dispositif de mesure (1, 1', 100) permettant de mesurer les déplacements et les déformations d'un objet (S) et comprenant : - une première plaque (2, 102) ; - une deuxième plaque (4, 104) ; et - six transducteurs de position (6, 8, 10, 12, 14, 16 ; 106, 108, 110, 112, 114, 116) qui sont placés entre lesdites première et deuxième plaques (2, 4 ; 102, 104) et les raccordent. Entre la première plaque (2, 102) et la deuxième plaque (4, 104), au moins ladite deuxième plaque (4, 104) peut être accouplée rigidement audit objet (S). Les transducteurs de position (6, 8, 10, 12, 14, 16 ; 106, 108, 110, 112, 114, 116) sont placés entre la première et la deuxième plaque et groupés par paires (6, 8 ; 10, 12 ; 14, 16 ; 106, 108 ; 110, 112 ; 114, 116) et les transducteurs de position de chaque paire (6, 8 ; 10, 12 ; 14, 16 ; 106, 108 ; 110, 112 ; 114, 116) sont plus ou moins positionnés de façon à former un V. Le dispositif (1, 1', 100) permet de mesurer les déplacements et les rotations de ladite deuxième plaque (4, 104) par rapport à ladite première plaque (2, 102) grâce auxdits transducteurs (6, 8, 10, 12, 14, 16 ; 106, 108, 110, 112, 114, 116).
PCT/IB2011/054113 2010-09-21 2011-09-20 Dispositif de mesure et méthode de mesure associée Ceased WO2012038890A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2010A000770A IT1402187B1 (it) 2010-09-21 2010-09-21 Dispositivo di misura e relativo procedimento di misura.
ITTO2010A000770 2010-09-21

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WO2012038890A1 true WO2012038890A1 (fr) 2012-03-29

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015066713A1 (fr) 2013-11-04 2015-05-07 Measurement Specialties, Inc. Boîtier de capteur de déformation et procédé associé
CN108036760A (zh) * 2017-11-30 2018-05-15 雄邦压铸（南通）有限公司 新能源汽车车身结构件变形检测及校形方法
CN120252605A (zh) * 2025-05-30 2025-07-04 北京科力华安地质灾害监测技术有限公司 油气管道三维位移监测方法及装置

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US4641123A (en) * 1984-10-30 1987-02-03 Rca Corporation Joystick control
US5113714A (en) * 1991-02-20 1992-05-19 The United States Of America As Represented By The Administrator Of The National Aeronautics & Space Administration User friendly joystick
US5317931A (en) * 1992-05-15 1994-06-07 First Technology Safety Systems, Inc. Apparatus for sensing deflection in a crash test dummy thorax
US6329812B1 (en) * 1996-12-04 2001-12-11 Sundin Gmbh Position measuring device for detecting displacements with at least three degrees of freedom
US6593912B1 (en) * 2000-03-21 2003-07-15 International Business Machines Corporation Electro-mechanical transducer for six degrees of freedom input and output

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4641123A (en) * 1984-10-30 1987-02-03 Rca Corporation Joystick control
US5113714A (en) * 1991-02-20 1992-05-19 The United States Of America As Represented By The Administrator Of The National Aeronautics & Space Administration User friendly joystick
US5317931A (en) * 1992-05-15 1994-06-07 First Technology Safety Systems, Inc. Apparatus for sensing deflection in a crash test dummy thorax
US6329812B1 (en) * 1996-12-04 2001-12-11 Sundin Gmbh Position measuring device for detecting displacements with at least three degrees of freedom
US6593912B1 (en) * 2000-03-21 2003-07-15 International Business Machines Corporation Electro-mechanical transducer for six degrees of freedom input and output

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015066713A1 (fr) 2013-11-04 2015-05-07 Measurement Specialties, Inc. Boîtier de capteur de déformation et procédé associé
EP3066414A4 (fr) * 2013-11-04 2017-06-28 Measurement Specialties, Inc. Boîtier de capteur de déformation et procédé associé
CN106062504B (zh) * 2013-11-04 2019-05-14 精量电子(美国)有限公司 变形传感器包和方法
CN108036760A (zh) * 2017-11-30 2018-05-15 雄邦压铸（南通）有限公司 新能源汽车车身结构件变形检测及校形方法
CN120252605A (zh) * 2025-05-30 2025-07-04 北京科力华安地质灾害监测技术有限公司 油气管道三维位移监测方法及装置

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IT1402187B1 (it) 2013-08-28
ITTO20100770A1 (it) 2012-03-22

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