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SE8605218D0 - PROPELLER SPEED AND PHASE SENSOR - Google Patents

PROPELLER SPEED AND PHASE SENSOR

Info

Publication number
SE8605218D0
SE8605218D0 SE8605218A SE8605218A SE8605218D0 SE 8605218 D0 SE8605218 D0 SE 8605218D0 SE 8605218 A SE8605218 A SE 8605218A SE 8605218 A SE8605218 A SE 8605218A SE 8605218 D0 SE8605218 D0 SE 8605218D0
Authority
SE
Sweden
Prior art keywords
signals
speed
computed
propeller
teeth
Prior art date
Application number
SE8605218A
Other languages
Swedish (sv)
Other versions
SE8605218L (en
SE465872B (en
Inventor
P D Collopy
G W Bennett
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of SE8605218D0 publication Critical patent/SE8605218D0/en
Publication of SE8605218L publication Critical patent/SE8605218L/en
Publication of SE465872B publication Critical patent/SE465872B/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/56—Devices characterised by the use of electric or magnetic means for comparing two speeds
    • G01P3/565—Devices characterised by the use of electric or magnetic means for comparing two speeds by measuring or by comparing the phase of generated current or voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/46—Arrangements of, or constructional features peculiar to, multiple propellers
    • B64C11/50—Phase synchronisation between multiple propellers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/489—Digital circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/56—Devices characterised by the use of electric or magnetic means for comparing two speeds

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Control Of Electric Motors In General (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

A speed and phase sensor for counterrotating aircraft propellers is described. A toothed wheel is attached to each propeller, and the teeth trigger a sensor as they pass, producing a sequence of signals. From the sequence of signals, the rotational speed of each propeller is computed, based on the time intervals between successive signals. The speed can be computed several times during one revolution, thus giving speed information which is highly up-to-date. Given that the spacing between teeth, or their shape or composition may not be uniform, the signals produced may be nonuniform in time. On the basis of an ideal period, computed from the period for a whole rotation and the number of teeth, error coefficients are derived to correct for nonuniformities in the resulting signals, thus allowing accurate speed to be computed. Phase can be viewed as the relative rotational position of one propeller with respect to the other, but measured at a fixed time. The invention computes phase from the signals. <IMAGE>
SE8605218A 1985-12-12 1986-12-04 A SYSTEM FOR DETERMINING SPEEDS FOR AIRPLANE PROPELLERS BASED ON ONE TIME INTERVAL AND ERROR COEFFICIENT SE465872B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80814785A 1985-12-12 1985-12-12

Publications (3)

Publication Number Publication Date
SE8605218D0 true SE8605218D0 (en) 1986-12-04
SE8605218L SE8605218L (en) 1987-06-13
SE465872B SE465872B (en) 1991-11-11

Family

ID=25198002

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8605218A SE465872B (en) 1985-12-12 1986-12-04 A SYSTEM FOR DETERMINING SPEEDS FOR AIRPLANE PROPELLERS BASED ON ONE TIME INTERVAL AND ERROR COEFFICIENT

Country Status (7)

Country Link
JP (1) JPS62156565A (en)
CA (1) CA1258914A (en)
DE (1) DE3641777A1 (en)
FR (1) FR2591752B1 (en)
GB (2) GB2184305B (en)
IT (1) IT1199757B (en)
SE (1) SE465872B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2554480B2 (en) * 1986-11-07 1996-11-13 株式会社 ゼクセル Time measuring device
GB2281624A (en) * 1993-07-30 1995-03-08 Rover Group Engine crankshaft position determination
DE4329521C2 (en) * 1993-09-02 1996-09-26 Deutsche Forsch Luft Raumfahrt Device for measuring rotor data in helicopters with articulated rotors for determining roll and pitch accelerations
DE19844780A1 (en) * 1998-09-30 2000-04-06 Bosch Gmbh Robert Pulse wheel rotational speed determination method for determining speed of vehicle, involves selecting pulses at unequal intervals
GB0129446D0 (en) * 2001-12-08 2002-01-30 Lucas Industries Ltd Angular velocity sensor
FR2932850B1 (en) * 2008-06-23 2010-08-13 Snecma METHOD AND SYSTEM FOR DETERMINING THE ANGULAR POSITION OF A TURBOJET ROTOR
DE102009016105B4 (en) * 2009-02-20 2017-11-16 Rolls-Royce Deutschland Ltd & Co Kg Method and device for measuring the load of rotating shafts
DE102009016106A1 (en) * 2009-02-20 2010-08-26 Rolls-Royce Deutschland Ltd & Co Kg Method for determining rotational speed of e.g. low pressure shaft of aircraft engine, involves producing rotational speed signals for rotary shaft by magnetic coding of shaft and recognizing and evaluating signals by two signal sensors
JP5762685B2 (en) * 2010-02-09 2015-08-12 新潟原動機株式会社 Control rotational speed calculation device, control rotational speed calculation method, and control rotational speed calculation program
WO2024205971A1 (en) * 2023-03-30 2024-10-03 Supernal, Llc Rotor assembly for mitigating effects of edgewise flight inflow and methods therefor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1099928A (en) * 1965-07-26 1968-01-17 Ici Ltd Speed detection
DE2553806C3 (en) * 1975-11-29 1979-03-29 Wabco Westinghouse Gmbh, 3000 Hannover Circuit arrangement for digital measurement of the period of an alternating voltage
NL7711634A (en) * 1977-10-24 1979-04-26 Philips Nv TACHOMETER SYSTEM.
JPS54143679A (en) * 1978-04-28 1979-11-09 Toyota Motor Co Ltd Method of detecting rotational frequency of rotary machine
DE3018528C2 (en) * 1980-05-14 1986-06-05 MTC, Meßtechnik und Optoelektronik AG, Neuenburg/Neuchâtel Method and device for measuring the angular velocity of a rotating body
JPS57144465A (en) * 1981-02-28 1982-09-07 Hitachi Ltd Speed detecting method
JPS58500335A (en) * 1981-03-03 1983-03-03 キャタピラー　インコーポレーテッド Measuring speed and advance angle
JPS5944991A (en) * 1982-09-02 1984-03-13 Hitachi Ltd Brushless motor rotation speed detection method
JPS6080769A (en) * 1983-10-07 1985-05-08 Hitachi Ltd Motor speed detection method

Also Published As

Publication number Publication date
FR2591752A1 (en) 1987-06-19
GB2219703A (en) 1989-12-13
CA1258914A (en) 1989-08-29
JPS62156565A (en) 1987-07-11
IT8622675A0 (en) 1986-12-12
DE3641777A1 (en) 1987-06-19
SE8605218L (en) 1987-06-13
FR2591752B1 (en) 1992-07-31
GB2219703B (en) 1990-04-04
GB8915275D0 (en) 1989-08-23
GB2184305A (en) 1987-06-17
IT1199757B (en) 1988-12-30
GB2184305B (en) 1990-03-21
GB8627275D0 (en) 1986-12-17
SE465872B (en) 1991-11-11

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