WO1988004767A3 - Dither signal remover for a dithered ring laser angular rate sensor - Google Patents

Dither signal remover for a dithered ring laser angular rate sensor Download PDF

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Publication number
WO1988004767A3
WO1988004767A3 PCT/US1987/003305 US8703305W WO8804767A3 WO 1988004767 A3 WO1988004767 A3 WO 1988004767A3 US 8703305 W US8703305 W US 8703305W WO 8804767 A3 WO8804767 A3 WO 8804767A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
rate sensor
angular rate
ring laser
laser angular
Prior art date
Application number
PCT/US1987/003305
Other languages
French (fr)
Other versions
WO1988004767A2 (en
Inventor
Merle E Lundeen
Wesley C Sewell
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Priority to DE8888901743T priority Critical patent/DE3769799D1/en
Priority to JP63501871A priority patent/JPH0648735B2/en
Publication of WO1988004767A2 publication Critical patent/WO1988004767A2/en
Publication of WO1988004767A3 publication Critical patent/WO1988004767A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
    • G01C19/58—Turn-sensitive devices without moving masses
    • G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
    • G01C19/66—Ring laser gyrometers
    • G01C19/661—Ring laser gyrometers details
    • G01C19/662—Ring laser gyrometers details signal readout; dither compensators
    • G01C19/664—Ring laser gyrometers details signal readout; dither compensators means for removing the dither signal

Abstract

The output signal of a dithered ring laser angular rate sensor and a signal representative of the resultant dithering of the sensor, are each independently signal analyzed to obtain the frequency components contained in such signals. Data pairs of frequency components of the same frequency are signal processed in a manner to derive a compensation or correction signal representative of the dither frequency component in the readout. In turn, the correction signal is subtracted from the readout signal to provide a corrected readout signal substantially devoid of any dither signal component.
PCT/US1987/003305 1986-12-23 1987-12-14 Dither signal remover for a dithered ring laser angular rate sensor WO1988004767A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8888901743T DE3769799D1 (en) 1986-12-23 1987-12-14 DEVICE FOR REMOVING A VIBRATION SIGNAL FOR A VIBRATED RING LASER ROTATION SPEED METER.
JP63501871A JPH0648735B2 (en) 1986-12-23 1987-12-14 Angular velocity sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/945,604 US4802766A (en) 1986-12-23 1986-12-23 Dither signal remover for a dithered ring laser angular rate sensor
US945,604 1986-12-23

Publications (2)

Publication Number Publication Date
WO1988004767A2 WO1988004767A2 (en) 1988-06-30
WO1988004767A3 true WO1988004767A3 (en) 1988-08-11

Family

ID=25483328

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1987/003305 WO1988004767A2 (en) 1986-12-23 1987-12-14 Dither signal remover for a dithered ring laser angular rate sensor

Country Status (6)

Country Link
US (1) US4802766A (en)
EP (1) EP0338023B1 (en)
JP (1) JPH0648735B2 (en)
CA (1) CA1269747A (en)
DE (1) DE3769799D1 (en)
WO (1) WO1988004767A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5012174A (en) * 1988-06-20 1991-04-30 Sperry Marine Inc. Method and apparatus for countering vibrations of a platform
US5048963A (en) * 1989-11-01 1991-09-17 Honeywell Inc. Dither signal remover for a dithered ring laser gyro
US5329355A (en) * 1991-12-09 1994-07-12 Honeywell Inc. Dither stripper to leave base motion
US5249031A (en) * 1991-12-11 1993-09-28 Honeywell Inc. Ring laser gyro dither stripper
US5347361A (en) * 1992-04-08 1994-09-13 Honeywell Inc. Rotation sensor output signal processor
EP0638811B1 (en) * 1993-08-12 2002-11-27 Rockwell International Corporation Estimator of amplitude and frequency of a noisy biased sinusoid from short bursts of samples
US5486920A (en) * 1993-10-01 1996-01-23 Honeywell, Inc. Laser gyro dither strippr gain correction method and apparatus
US6725169B2 (en) 2002-03-07 2004-04-20 Honeywell International Inc. Methods and apparatus for automatic gain control

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344706A (en) * 1980-07-14 1982-08-17 The Singer Company Ring laser gyro dither pulse eliminator
WO1986007141A1 (en) * 1985-05-24 1986-12-04 Honeywell Inc. Dither signal remover for a dithered ring laser angular rate sensor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248534A (en) * 1979-05-09 1981-02-03 The Singer Company Apparatus and method for the elimination of angular vibration induced errors in ring laser gyroscopes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344706A (en) * 1980-07-14 1982-08-17 The Singer Company Ring laser gyro dither pulse eliminator
WO1986007141A1 (en) * 1985-05-24 1986-12-04 Honeywell Inc. Dither signal remover for a dithered ring laser angular rate sensor

Also Published As

Publication number Publication date
WO1988004767A2 (en) 1988-06-30
US4802766A (en) 1989-02-07
EP0338023B1 (en) 1991-05-02
JPH0648735B2 (en) 1994-06-22
DE3769799D1 (en) 1991-06-06
CA1269747A (en) 1990-05-29
JPH02501874A (en) 1990-06-21
EP0338023A1 (en) 1989-10-25

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