[특허]Method and system for controlling active suspensions of a vehicle during acceleration and deceleration

Method and system for controlling active suspensions of a vehicle during acceleration and deceleration 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60G-017/01
출원번호	US-0358547 (1994-12-14)
우선권정보	JP-0332226 (1990-11-29); JP-0089477 (1991-03-28)
발명자 / 주소	Mine Atsushi (Ashikaga JPX)
출원인 / 주소	Fuji Jukogyo Kabushiki Kaisha (Tokyo JPX 03)
인용정보	피인용 횟수 : 42 인용 특허 : 0

초록 ▼

An active suspension system of a vehicle has a feed back control system for controlling four suspensions for the four wheels to maintain a reference vehicle height responsive to detected vertical relative displacements between the wheels and the vehicle body at said suspensions, and a feed forward control system for controlling the suspension to reduce pitching of the vehicle responsive to detected longitudinal acceleration. There is further provided a circuit for changing the reference vehicle height which is responsive to the absolute value of the detected longitudinal acceleration or deceleration for reducing the reference vehicle height with increase of the absolute value so that the vehicle body is lowered while the pitching is maintained at a predetermined value so as to obtain better driver\s sensation during vehicle acceleration and deceleration and to improve the performance of acceleration and deceleration.

대표청구항 ▼

A system for controlling a plurality of active suspensions in a vehicle which is provided corresponding to each wheel of a vehicle, by charging and discharging a fluid to independently control height of said active suspensions to attain a reference vehicle height, the system comprising: a longitudinal G-sensor mounted on said vehicle for detecting a longitudinal acceleration of said vehicle and for producing a longitudinal acceleration signal; longitudinal hysteresis control means responsive to said longitudinal acceleration signal for attaining longitudinal control without fluctuation and for generating a longitudinal control signal; a vertical height adjusting switch mounted on said vehicle for simultaneously changing a stroke by a same amount for each active suspension and for generating a signal of reference vehicle height for said each active suspension; longitudinal variation calculating means responsive to said longitudinal control signal and said reference vehicle height signal for computing a quantity of said fluid in accordance with said longitudinal acceleration and for producing a first quantity signal; a lateral G-sensor mounted on said vehicle for sensing a lateral acceleration of said vehicle and for generating a lateral acceleration signal; lateral hysteresis control means responsive to said lateral acceleration signal for attaining lateral control without fluctuation and for generating a lateral control signal; lateral variation calculating means responsive to said lateral control signal and said reference vehicle height signal for computing a quantity of said fluid in accordance with said lateral acceleration and for producing a second quantity signal; control quantity calculating means responsive to said first and second quantity signals for calculating a control quantity and for generating a control quantity signal; a vertical G-sensor provided for each active suspension to detect an acceleration in a vertical direction of said active suspension and to produce a vertical acceleration signal; vertical acceleration control means responsive to said vertical acceleration signal for attaining vertical control without fluctuation and for generating a vertical control signal; a suspension stroke sensor provided for each active suspension to detect a stroke of said active suspension and to generate a stroke signal, and stroke control means responsive to said stroke signal for generating a stroke control signal; control means responsive to said vertical control signal and said stroke control signal to control said active suspension system; means for supplying said control quantity signal to said active suspension system to reduce delay in vehicle attitude control by said active suspension system; calculating means responsive to said longitudinal acceleration signal for computing a changing amount of vehicle height dependent on an actual amount of said longitudinal acceleration; and correcting means responsive to said calculating means for simultaneously lowering said reference vehicle height in a linearly proportional function of said actual amount so as to lower said reference vehicle height by a same displacement amount for said each active suspension, wherein said control means controls said active suspension system based on said lowered reference vehicle height.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Method and system for controlling active suspensions of a vehicle during acceleration and deceleration 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허를 인용한 특허 (42)

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연합인증

Method and system for controlling active suspensions of a vehicle during acceleration and deceleration 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (42)

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