CA2241463A1 - Signal processing system for inertial sensor - Google Patents

Signal processing system for inertial sensor

Info

Publication number
CA2241463A1
CA2241463A1 CA002241463A CA2241463A CA2241463A1 CA 2241463 A1 CA2241463 A1 CA 2241463A1 CA 002241463 A CA002241463 A CA 002241463A CA 2241463 A CA2241463 A CA 2241463A CA 2241463 A1 CA2241463 A1 CA 2241463A1
Authority
CA
Canada
Prior art keywords
feedback
proof mass
signal processing
processing system
inertial sensor
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.)
Granted
Application number
CA002241463A
Other languages
French (fr)
Other versions
CA2241463C (en
Inventor
Stanley F. Wyse
Daniel A. Tazartes
Juergen K. P. Flamm
Charles A. Lee
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.)
Northrop Grumman Guidance and Electronics Co Inc
Original Assignee
Litton Systems 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 Litton Systems Inc filed Critical Litton Systems Inc
Publication of CA2241463A1 publication Critical patent/CA2241463A1/en
Application granted granted Critical
Publication of CA2241463C publication Critical patent/CA2241463C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/0888—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values for indicating angular acceleration
    • 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
    • G01C19/5705—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using masses driven in reciprocating rotary motion about an axis
    • 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
    • G01C19/5776—Signal processing not specific to any of the devices covered by groups G01C19/5607 - G01C19/5719
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0346—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/10—Arrangements for controlling torque ripple, e.g. providing reduced torque ripple

Abstract

A dithered Coriolis acceleration sensor system has a proof mass that is free of feedback in the accelerometer servo loop at the dither frequency by totally notching out all feedback torque at this frequency. The proof mass relative motion is then a direct measure of the rate because there is no feedback torque to alter the proof mass response to the acceleration. The feedback modulation system according to the invention captures the Coriolis-sensor output such that the phase and gain of the signal generated from the sensor are of no concern in maintaining good scale factor.
CA002241463A 1997-07-14 1998-06-22 Signal processing system for inertial sensor Expired - Fee Related CA2241463C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/892,252 1997-07-14
US08/892,252 US5983718A (en) 1997-07-14 1997-07-14 Signal processing system for inertial sensor

Publications (2)

Publication Number Publication Date
CA2241463A1 true CA2241463A1 (en) 1999-01-14
CA2241463C CA2241463C (en) 2001-10-02

Family

ID=25399649

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002241463A Expired - Fee Related CA2241463C (en) 1997-07-14 1998-06-22 Signal processing system for inertial sensor

Country Status (6)

Country Link
US (2) US5983718A (en)
EP (1) EP0892246B1 (en)
JP (1) JP3816674B2 (en)
KR (1) KR19990013847A (en)
CA (1) CA2241463C (en)
DE (1) DE69826373T2 (en)

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US6253612B1 (en) * 1998-06-05 2001-07-03 Integrated Micro Instruments, Inc. Generation of mechanical oscillation applicable to vibratory rate gyroscopes
US6508122B1 (en) * 1999-09-16 2003-01-21 American Gnc Corporation Microelectromechanical system for measuring angular rate
US6360601B1 (en) * 2000-01-20 2002-03-26 Hughes Electronics Corp. Microgyroscope with closed loop output
US6246243B1 (en) * 2000-01-21 2001-06-12 Analog Devices, Inc. Semi-fusible link system
ATE302566T1 (en) * 2000-06-23 2005-09-15 Vibrotron As MECHANO-ELECTRICAL TWO-WAY CONVERTER
US6553835B1 (en) * 2000-09-15 2003-04-29 Bei Technologies, Inc. Inertial rate sensor and method with improved clocking
US20030033850A1 (en) * 2001-08-09 2003-02-20 Challoner A. Dorian Cloverleaf microgyroscope with electrostatic alignment and tuning
DE10317159B4 (en) * 2003-04-14 2007-10-11 Litef Gmbh Method for compensating a zero error in a Coriolis gyro
FR2858853B1 (en) * 2003-08-13 2006-01-13 Sercel Rech Const Elect ACCELEROMETER WITH REDUCED PARASITE VIBRATION BY IMPROVED ELECTRODE FORM
JP3964875B2 (en) * 2004-02-16 2007-08-22 株式会社ジャイトロニクス Angular velocity sensor
DE102004061804B4 (en) * 2004-12-22 2015-05-21 Robert Bosch Gmbh Micromechanical rotation rate sensor with error suppression
DE102005034703A1 (en) * 2005-07-26 2007-02-01 Robert Bosch Gmbh Method and circuit arrangement for driving and for the simultaneous evaluation of a rotation rate sensor
FR2894412B1 (en) * 2005-12-02 2008-02-29 Thales Sa DEVICE FOR DIGITAL ACQUISITION OF AN AMPLITUDE MODULATION SIGNAL
US20080098814A1 (en) * 2006-10-31 2008-05-01 Honeywell International Inc. Dual mode mems sensor
FR2914126B1 (en) * 2007-03-22 2009-05-22 Eddysense Sarl SYNCHRONOUS DEMODULATION METHOD AND RECORDING MEDIUM FOR THIS METHOD, SYNCHRONOUS DEMODULATOR AND SENSOR INCORPORATING THE DEMODULATOR
US7630082B2 (en) * 2007-04-12 2009-12-08 Honeywell International Inc. Systems and methods for high precision feedback control in closed loop sensors
JP4794596B2 (en) * 2008-04-04 2011-10-19 パナソニック株式会社 Physical quantity detection circuit, physical quantity sensor device
DE102008044664B4 (en) * 2008-08-28 2023-12-21 Continental Automotive Technologies GmbH Method for frequency control of an oscillator arrangement
US8082789B2 (en) * 2008-10-02 2011-12-27 Freescale Semiconductor, Inc. Matched multiplier circuit having reduced phase shift for use in MEMS sensing applications
DE102009026508A1 (en) * 2009-05-27 2010-12-02 Robert Bosch Gmbh Sensor and method for operating a sensor
US9459274B2 (en) * 2013-03-13 2016-10-04 Invensense, Inc. Round-robin sensing device and method of use
GB201313389D0 (en) 2013-07-26 2013-09-11 Atlantic Inertial Systems Ltd Signal processing
US9885577B2 (en) * 2015-07-30 2018-02-06 Invensense, Inc. Reducing resonance peaks and drive tones from a micro-electro-mechanical system gyroscope response
JP6571064B2 (en) * 2016-11-21 2019-09-04 株式会社東芝 Detection device and sensor device
EP3786581B1 (en) * 2019-08-29 2023-06-07 Murata Manufacturing Co., Ltd. Offset-cancelling capacitive mems gyroscope

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445376A (en) * 1982-03-12 1984-05-01 Technion Research And Development Foundation Ltd. Apparatus and method for measuring specific force and angular rate
US4510802A (en) * 1983-09-02 1985-04-16 Sundstrand Data Control, Inc. Angular rate sensor utilizing two vibrating accelerometers secured to a parallelogram linkage
US4590801A (en) * 1983-09-02 1986-05-27 Sundstrand Data Control, Inc. Apparatus for measuring inertial specific force and angular rate of a moving body
US4522062A (en) * 1983-09-02 1985-06-11 Sundstrand Data Control, Inc. Digital processor for use with an accelerometer based angular rate sensor
US4679434A (en) * 1985-07-25 1987-07-14 Litton Systems, Inc. Integrated force balanced accelerometer
US4841773A (en) * 1987-05-01 1989-06-27 Litton Systems, Inc. Miniature inertial measurement unit
US4821572A (en) * 1987-11-25 1989-04-18 Sundstrand Data Control, Inc. Multi axis angular rate sensor having a single dither axis
US5007289A (en) * 1988-09-30 1991-04-16 Litton Systems, Inc. Three axis inertial measurement unit with counterbalanced, low inertia mechanical oscillator
US4996877A (en) * 1989-02-24 1991-03-05 Litton Systems, Inc. Three axis inertial measurement unit with counterbalanced mechanical oscillator
US5065627A (en) * 1990-03-20 1991-11-19 Litton Systems, Inc. Three axis inertial measurement unit with counterbalanced, low inertia mechanical oscillator
US5142921A (en) * 1990-10-29 1992-09-01 Litton Systems, Inc. Force balance instrument with electrostatic charge control
US5168756A (en) * 1991-02-08 1992-12-08 Sundstrand Corporation Dithering coriolis rate and acceleration sensor utilizing a permanent magnet
GB2266149B (en) * 1992-04-10 1995-08-16 British Aerospace Single axis rate sensor noise reduction
US5400269A (en) * 1993-09-20 1995-03-21 Rockwell International Corporation Closed-loop baseband controller for a rebalance loop of a quartz angular rate sensor
US5987986A (en) * 1994-07-29 1999-11-23 Litton Systems, Inc. Navigation grade micromachined rotation sensor system
US5616864A (en) * 1995-02-22 1997-04-01 Delco Electronics Corp. Method and apparatus for compensation of micromachined sensors

Also Published As

Publication number Publication date
EP0892246A3 (en) 2000-06-28
DE69826373T2 (en) 2005-09-29
US6324909B1 (en) 2001-12-04
EP0892246A2 (en) 1999-01-20
EP0892246B1 (en) 2004-09-22
KR19990013847A (en) 1999-02-25
DE69826373D1 (en) 2004-10-28
US5983718A (en) 1999-11-16
JP3816674B2 (en) 2006-08-30
JPH11132771A (en) 1999-05-21
CA2241463C (en) 2001-10-02

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