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GB2215054B - Oscillatory angular velocity detecting apparatus - Google Patents

Oscillatory angular velocity detecting apparatus

Info

Publication number
GB2215054B
GB2215054B GB8803769A GB8803769A GB2215054B GB 2215054 B GB2215054 B GB 2215054B GB 8803769 A GB8803769 A GB 8803769A GB 8803769 A GB8803769 A GB 8803769A GB 2215054 B GB2215054 B GB 2215054B
Authority
GB
United Kingdom
Prior art keywords
readout
signal
amplitude
drive
detecting apparatus
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.)
Expired
Application number
GB8803769A
Other versions
GB8803769D0 (en
GB2215054A (en
Inventor
Takahiro Oikawa
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.)
Yazaki Corp
Original Assignee
Yazaki Corp
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 Yazaki Corp filed Critical Yazaki Corp
Publication of GB8803769D0 publication Critical patent/GB8803769D0/en
Publication of GB2215054A publication Critical patent/GB2215054A/en
Application granted granted Critical
Publication of GB2215054B publication Critical patent/GB2215054B/en
Expired legal-status Critical Current

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
    • G01C19/56—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
    • G01C19/5642—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using vibrating bars or beams

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Gyroscopes (AREA)

Abstract

An oscillatory angular speed detecting apparatus comprises a pillar-shaped oscillator body 1 and drive and readout piezoelectric transducers 2a, 2b attached to first and second side surfaces of the oscillator body, the first side surface being perpendicular to the second side surface. Oscillation of the oscillator body is transduced into a readout signal by the readout piezoelectric transducer 2b, and a phase detecting device 15 detects variations of phases of drive and readout signals, and an amplitude detecting device 18 detects variations of amplitudes of the readout signals. The angular speed is derived from these phases and amplitude. A feedback transducer 2c is used for generating the drive signal by circuits 10, 11, 12 and to provide a phase reference for the phase detector 15. The readout signal from the transducer 2b is amplified by an amplifier 16 and is passed to both the phase detector 15 and the amplitude detector 18. DC levels generated at converters 19, 20 are digitized and processed to provide a display signal. <IMAGE>
GB8803769A 1988-02-19 1988-02-18 Oscillatory angular velocity detecting apparatus Expired GB2215054B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883805250 DE3805250C2 (en) 1988-02-19 1988-02-19 Angular velocity detector device

Publications (3)

Publication Number Publication Date
GB8803769D0 GB8803769D0 (en) 1988-03-16
GB2215054A GB2215054A (en) 1989-09-13
GB2215054B true GB2215054B (en) 1992-09-30

Family

ID=6347763

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8803769A Expired GB2215054B (en) 1988-02-19 1988-02-18 Oscillatory angular velocity detecting apparatus

Country Status (2)

Country Link
DE (1) DE3805250C2 (en)
GB (1) GB2215054B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5349857A (en) * 1988-08-12 1994-09-27 Murata Manufacturing Co., Ltd. Vibratory gyroscope
GB2223309B (en) * 1988-08-12 1993-08-25 Murata Manufacturing Co Vibrator and vibratory gyroscope using the same
US5874674A (en) * 1988-08-12 1999-02-23 Murata Manufacturing Co., Ltd. Vibrator including piezoelectric electrodes or detectors arranged to be non-parallel and non-perpendicular to coriolis force direction and vibratory gyroscope using the same
US5493166A (en) * 1988-08-12 1996-02-20 Murata Manufacturing Co., Ltd. Vibrator and vibrating gyroscope using the same
EP0477540B1 (en) * 1990-08-27 1995-08-09 Murata Manufacturing Co., Ltd. Detecting circuit for vibrating gyroscope
FR2677127B1 (en) * 1991-05-31 1993-08-13 Asulab Sa DEVICE FOR MEASURING AN ANGULAR SPEED.
JPH0674774A (en) * 1992-08-27 1994-03-18 Murata Mfg Co Ltd Drive circuit for gyro
JPH06147902A (en) * 1992-11-04 1994-05-27 Murata Mfg Co Ltd Vibration gyro
JPH06242135A (en) * 1993-02-12 1994-09-02 Aisin Seiki Co Ltd Driving circuit for angular velocity sensor
JPH07113645A (en) * 1993-10-15 1995-05-02 Toyota Motor Corp Vibrating gyro
JP3479853B2 (en) * 1994-10-05 2003-12-15 アイシン精機株式会社 Vibrator drive

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB947310A (en) * 1960-07-22 1964-01-22 August Karolus Improvements in or relating to rotation responsive devices
GB1121750A (en) * 1966-07-25 1968-07-31 Honeywell Inc Improvements in or relating to apparatus for sensing angular rate of movement
GB1288118A (en) * 1969-07-18 1972-09-06
WO1981000933A1 (en) * 1979-10-01 1981-04-02 Sperry Corp Force balanced piezoelectric vibratory rate sensor
GB2154739A (en) * 1984-02-22 1985-09-11 Nat Res Dev Gyroscopic devices

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520195A (en) * 1965-10-11 1970-07-14 Gen Electric Solid state angular velocity sensing device
US4409836A (en) * 1981-11-13 1983-10-18 Motorola, Inc. Apparatus and method for detecting the cessation of motion of a body
CA1234705A (en) * 1984-03-22 1988-04-05 Suzushi Kimura Angular velocity sensor
JPS61193019A (en) * 1985-02-22 1986-08-27 Yazaki Corp Oscillating gyro

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB947310A (en) * 1960-07-22 1964-01-22 August Karolus Improvements in or relating to rotation responsive devices
GB1121750A (en) * 1966-07-25 1968-07-31 Honeywell Inc Improvements in or relating to apparatus for sensing angular rate of movement
GB1288118A (en) * 1969-07-18 1972-09-06
WO1981000933A1 (en) * 1979-10-01 1981-04-02 Sperry Corp Force balanced piezoelectric vibratory rate sensor
GB2154739A (en) * 1984-02-22 1985-09-11 Nat Res Dev Gyroscopic devices

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GB 2154739 A is equivalent to EP 0153189 A *

Also Published As

Publication number Publication date
GB8803769D0 (en) 1988-03-16
DE3805250C2 (en) 1995-04-13
GB2215054A (en) 1989-09-13
DE3805250A1 (en) 1989-08-31

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee