DE68908765D1 - Verfahren und Gerät zur Hybrid-Analog-Digital-Regelung für die Bewertung der absoluten Geschwindigkeit in einem aktiven Aufhängungssystem. - Google Patents

Verfahren und Gerät zur Hybrid-Analog-Digital-Regelung für die Bewertung der absoluten Geschwindigkeit in einem aktiven Aufhängungssystem.

Info

Publication number
DE68908765D1
DE68908765D1 DE89304392T DE68908765T DE68908765D1 DE 68908765 D1 DE68908765 D1 DE 68908765D1 DE 89304392 T DE89304392 T DE 89304392T DE 68908765 T DE68908765 T DE 68908765T DE 68908765 D1 DE68908765 D1 DE 68908765D1
Authority
DE
Germany
Prior art keywords
evaluating
suspension system
digital control
active suspension
absolute speed
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 - Fee Related
Application number
DE89304392T
Other languages
English (en)
Other versions
DE68908765T2 (de
Inventor
Paul T Wolfe
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.)
Lord Corp
Original Assignee
Lord 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 Lord Corp filed Critical Lord Corp
Application granted granted Critical
Publication of DE68908765D1 publication Critical patent/DE68908765D1/de
Publication of DE68908765T2 publication Critical patent/DE68908765T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/018—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the use of a specific signal treatment or control method
    • 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
    • G01P3/50—Devices characterised by the use of electric or magnetic means for measuring linear speed
    • G01P3/52—Devices characterised by the use of electric or magnetic means for measuring linear speed by measuring amplitude of generated current or voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P7/00—Measuring speed by integrating acceleration
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D13/00—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover
    • G05D13/62—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover characterised by the use of electric means, e.g. use of a tachometric dynamo, use of a transducer converting an electric value into a displacement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/20—Type of damper
    • B60G2202/24—Fluid damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/10—Acceleration; Deceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/10—Acceleration; Deceleration
    • B60G2400/102—Acceleration; Deceleration vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/20—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/20—Speed
    • B60G2400/202—Piston speed; Relative velocity between vehicle body and wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/10—Damping action or damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/16—Integrating means, i.e. integral control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/18—Automatic control means
    • B60G2600/184—Semi-Active control means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/60—Signal noise suppression; Electronic filtering means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/60—Signal noise suppression; Electronic filtering means
    • B60G2600/604—Signal noise suppression; Electronic filtering means low pass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/70—Computer memory; Data storage, e.g. maps for adaptive control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/74—Analog systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/76—Digital systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/90—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems other signal treatment means

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Vehicle Body Suspensions (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Vibration Prevention Devices (AREA)
  • Feedback Control In General (AREA)
DE89304392T 1988-05-09 1989-05-02 Verfahren und Gerät zur Hybrid-Analog-Digital-Regelung für die Bewertung der absoluten Geschwindigkeit in einem aktiven Aufhängungssystem. Expired - Fee Related DE68908765T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/192,067 US4953089A (en) 1988-05-09 1988-05-09 Hybrid analog digital control method and apparatus for estimation of absolute velocity in active suspension systems

Publications (2)

Publication Number Publication Date
DE68908765D1 true DE68908765D1 (de) 1993-10-07
DE68908765T2 DE68908765T2 (de) 1994-02-17

Family

ID=22708094

Family Applications (1)

Application Number Title Priority Date Filing Date
DE89304392T Expired - Fee Related DE68908765T2 (de) 1988-05-09 1989-05-02 Verfahren und Gerät zur Hybrid-Analog-Digital-Regelung für die Bewertung der absoluten Geschwindigkeit in einem aktiven Aufhängungssystem.

Country Status (6)

Country Link
US (1) US4953089A (de)
EP (1) EP0341883B1 (de)
JP (1) JP2958340B2 (de)
KR (1) KR920006164B1 (de)
CA (1) CA1332079C (de)
DE (1) DE68908765T2 (de)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3918735A1 (de) * 1989-06-08 1990-12-13 Bosch Gmbh Robert Verfahren und vorrichtung zur daempfung von bewegungsablaeufen
GB2239506B (en) * 1989-12-08 1993-08-25 Toyota Motor Co Ltd Suspension control system
DE4036064A1 (de) * 1990-11-13 1992-05-14 Teves Gmbh Alfred Semi-aktives fahrwerksregelungssystem
US5550739A (en) * 1990-10-26 1996-08-27 Alfred Teves Gmbh Semi-active suspension control system
US5430646A (en) * 1991-02-22 1995-07-04 Atsugi Unisia Corporation System and method for controlling damping force coefficient of shock absorber applicable to automotive supension
US5235529A (en) * 1991-05-06 1993-08-10 General Motors Corporation Real time suspension control with digital all-pass, high-pass filter
JP3080257B2 (ja) * 1991-08-06 2000-08-21 株式会社ユニシアジェックス 車両懸架装置
US5276622A (en) * 1991-10-25 1994-01-04 Lord Corporation System for reducing suspension end-stop collisions
US5276623A (en) * 1991-11-27 1994-01-04 Lord Corporation System for controlling suspension deflection
US5448146A (en) * 1993-01-29 1995-09-05 Board Of Regents, The University Of Texas System Method for applying constant force with nonlinear feedback control and constant force device using same
US6259982B1 (en) 1993-02-02 2001-07-10 Trw Inc. Method and apparatus for controlling an active suspension system
US6058340A (en) * 1993-12-28 2000-05-02 Tokico Ltd. Suspension control apparatus
US5660255A (en) * 1994-04-04 1997-08-26 Applied Power, Inc. Stiff actuator active vibration isolation system
US5975508A (en) * 1995-09-06 1999-11-02 Applied Power Inc. Active vehicle seat suspension system
US5603387A (en) * 1995-09-06 1997-02-18 Applied Power, Inc. Active vehicle suspension system
US5712783A (en) 1996-04-26 1998-01-27 Lord Corporation Control method for semi-active damper
US5809451A (en) * 1997-02-24 1998-09-15 Ford Motor Company Sensor processor integrated circuit
US5941920A (en) * 1997-11-12 1999-08-24 Case Corporation Control of an active suspension system for a work vehicle based upon a parameter of another vehicle system
US6175792B1 (en) * 1998-02-03 2001-01-16 Trw Inc. Apparatus and method for improving dynamic response of an active roll control vehicle suspension system
JP3787038B2 (ja) * 1998-09-10 2006-06-21 トヨタ自動車株式会社 弾性支持装置、車両用弾性支持装置及び車両用サスペンション装置のための制御装置
US6115658A (en) * 1999-01-04 2000-09-05 Lord Corporation No-jerk semi-active skyhook control method and apparatus
US6311110B1 (en) 1999-06-17 2001-10-30 Lord Corporation Adaptive off-state control method
US6898501B2 (en) 1999-07-15 2005-05-24 Cnh America Llc Apparatus for facilitating reduction of vibration in a work vehicle having an active CAB suspension system
US6507778B2 (en) * 2001-01-05 2003-01-14 Mando Corporation Apparatus for controlling semi-active suspension system
US6754571B2 (en) 2001-07-30 2004-06-22 Delphi Technologies, Inc. Control of magnetorheological engine mount
US6834736B2 (en) * 2002-12-17 2004-12-28 Husco International, Inc. Active vehicle suspension with a hydraulic spring
FR2856765B1 (fr) * 2003-06-26 2005-12-02 Hutchinson Batteur dynamique actif
KR100574898B1 (ko) * 2003-11-26 2006-04-27 주식회사 만도 전자 제어 현가 장치와 이를 이용한 감쇠력 제어 방법
US7321816B2 (en) * 2004-04-27 2008-01-22 Tenneco Automotive Operating Company, Inc. Model free semi-active vehicle suspension system
US7010414B2 (en) * 2004-07-14 2006-03-07 Delphi Technologies, Inc. Method for reducing computational time for calculating a noise-filtered average approximation of throttle position
US7234386B2 (en) * 2005-08-26 2007-06-26 Husco International, Inc. Three chamber hydraulic cylinder for an active vehicle suspension with integrated load leveling
US20070045067A1 (en) * 2005-08-26 2007-03-01 Husco International, Inc. Hydraulic circuit with a pilot operated check valve for an active vehicle suspension system
US20070045069A1 (en) * 2005-08-26 2007-03-01 Husco International, Inc. Active vehicle suspension with integrated load leveling
DE102006003674B4 (de) * 2006-01-26 2021-06-10 Volkswagen Ag Verfahren und Vorrichtung zur Fahrtrichtungserkennung eines Kraftfahrzeugs
US8302456B2 (en) 2006-02-23 2012-11-06 Asylum Research Corporation Active damping of high speed scanning probe microscope components
JP4775576B2 (ja) * 2006-09-20 2011-09-21 エプソントヨコム株式会社 速度センサおよびその調整方法
GB2461892A (en) * 2008-07-16 2010-01-20 Univ Sheffield A damper for a mountain bike
US7735838B2 (en) * 2008-08-20 2010-06-15 Husco International, Inc. Vehicle suspension with selectable roll stabilization
US9383388B2 (en) 2014-04-21 2016-07-05 Oxford Instruments Asylum Research, Inc Automated atomic force microscope and the operation thereof
EP3144928B1 (de) * 2015-09-15 2021-03-24 Harman Becker Automotive Systems GmbH Aktives strassenlärmdämpfungssystem
CN105159094B (zh) * 2015-10-08 2017-08-04 山东理工大学 汽车主动悬架lqg控制器最优控制力的设计方法
CN110987146B (zh) * 2019-11-03 2022-02-08 武汉光谷航天三江激光产业技术研究院有限公司 一种光纤传感自差接收装置
CN110901326B (zh) * 2019-12-03 2023-01-03 辽宁工业大学 一种具有状态约束与死区输入的主动悬架系统的控制方法

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807678A (en) * 1972-09-19 1974-04-30 Lord Corp System for controlling the transmission of energy between spaced members
GB1555124A (en) * 1975-06-07 1979-11-07 Lucas Industries Ltd Vehicle suspension systems
US4085363A (en) * 1976-06-09 1978-04-18 Grumman Aerospace Corporation Rate measuring system
DE2922414C2 (de) * 1979-06-01 1985-04-25 Bodenseewerk Gerätetechnik GmbH, 7770 Überlingen Kurs-Lage-Referenzgerät
GB1600390A (en) * 1977-10-25 1981-10-14 British Railways Board Active suspensions for vehicles
US4373744A (en) * 1980-01-23 1983-02-15 Lucas Industries Limited Suspension control system for a road vehicle
EP0046151B1 (de) * 1980-08-19 1985-11-21 Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung Vorrichtung zur Lagestabilisierung von elastischen Fahrzeugen
US4468050A (en) * 1983-08-15 1984-08-28 Woods Lonnie K Computer optimized adaptive suspension system
US4468739A (en) * 1981-11-17 1984-08-28 Woods Lonnie K Computer optimized adaptive suspension system having combined shock absorber/air spring unit
US4422322A (en) * 1982-04-27 1983-12-27 Spangler Elson B Method and system for measurement of road profile
JPS59213510A (ja) * 1983-05-20 1984-12-03 Toyota Central Res & Dev Lab Inc アクテイブ・サスペンシヨン装置
US4491207A (en) * 1983-07-15 1985-01-01 Lord Corporation Fluid control means for vehicle suspension system
GB2147683B (en) * 1983-09-24 1986-10-01 Bilstein August Gmbh Co Kg Shock absorber, with electromagnetically biased pressure responsive valve
DE3524863A1 (de) * 1985-04-12 1986-10-30 Robert Bosch Gmbh, 7000 Stuttgart Verfahren und vorrichtung zum steuern der federhaerte, insbesondere bei fahrzeugen
DE3670893D1 (de) * 1985-07-31 1990-06-07 Wright Barry Corp Parametergesteuertes aktives schwingungsdaempfungssystem.
US4757980A (en) * 1985-07-31 1988-07-19 Barry Wright Corporation Parametrically controlled active vibration isolation system
JP2532059B2 (ja) * 1985-09-13 1996-09-11 日産自動車株式会社 車両のサスペンシヨン制御装置
JPH0811484B2 (ja) * 1985-09-27 1996-02-07 日産自動車株式会社 車両のサスペンシヨン制御装置
GB8610842D0 (en) * 1986-05-02 1986-06-11 Bl Tech Ltd Suspension system
DE3632919A1 (de) * 1986-09-27 1988-03-31 Bayerische Motoren Werke Ag Verfahren zur daempfkraftverstellung von kraftfahrzeugen
US4821849A (en) * 1986-09-29 1989-04-18 Lord Corporation Control method and means for vibration attenuating damper
DE3738284A1 (de) * 1986-12-09 1988-06-30 Bosch Gmbh Robert Vorrichtung zur aktiven fahrwerkregelung bei kraftfahrzeugen

Also Published As

Publication number Publication date
US4953089A (en) 1990-08-28
KR920006164B1 (ko) 1992-07-31
DE68908765T2 (de) 1994-02-17
KR890017534A (ko) 1989-12-16
EP0341883A2 (de) 1989-11-15
EP0341883B1 (de) 1993-09-01
JPH0214909A (ja) 1990-01-18
EP0341883A3 (de) 1991-05-08
JP2958340B2 (ja) 1999-10-06
CA1332079C (en) 1994-09-20

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