Hydraulic active suspension system for a vehicle for controlling

Details Hydraulic active suspension system for a vehicle for controlling Hydraulic active suspension system for a vehicle for controlling

1990-04-06

1992-04-07

Black, Thomas G.

Boots, shoes, and leggings

280707, B60G 1708

Patent

active

051033976

ABSTRACT:
In a hydraulic active suspension system, a plurality of actuators having working fluid chambers are provided corresponding to vehicle wheels. Each actuator is adapted to increase and decrease vehicle height in response to the pressure within its working chamber, which is controlled by a pressure control device. Vehicle speed and lateral acceleration are detected by corresponding sensors. A control device is further provided for controlling the pressure control device by compensating values determined base upon the lateral acceleration detected. The control device is adapted to reduce the compensating values in magnitude when the vehicle speed is lower than a predetermined value under which the lateral acceleration sensor sometimes detects a false lateral acceleration, thereby reducing the possibility that the vehicle body may generate an unpleasant roll due to the erroneous control on the pressures within the working fluid chambers based upon a false lateral acceleration.

REFERENCES:
patent: 4679136 (1987-07-01), Shigemasa
patent: 4803627 (1989-02-01), Yasuike et al.
patent: 4865347 (1989-09-01), Fukushima et al.
patent: 4905152 (1990-02-01), Kawabata
patent: 4937748 (1990-06-01), Yonekawa et al.
patent: 4982979 (1991-01-01), Akatzu et al.

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