System for controlling suspension in accordance with road condit

Details System for controlling suspension in accordance with road condit System for controlling suspension in accordance with road condit

1993-02-12

1996-04-30

Park, Collin W.

Boots, shoes, and leggings

280707, 280840, 395900, B60G 1700

Patent

active

055131085

ABSTRACT:
A suspension system includes air suspensions provided for individual wheels of a motor vehicle, each including a damping force switching actuator and an air supply/discharge actuator for the air spring. It further includes sensor for detecting the steering angle of a steering wheel, a sensor for detecting the vehicle velocity, and a control device for controlling the damping force and spring constant of each air suspension in accordance with the values detected by means of the sensors. This thereby reduces the roll of the vehicle body and modifies the steering characteristic of the motor vehicle. The control device includes a controller for detecting the gradient and flexure degree of a road. It further includes a controller for discriminating the road conditions by fuzzy inference in accordance with the gradient and flexure degree, and for determining the delay time or time interval between the start of the roll control for the rear portion of the vehicle body and the start of the roll control for the front portion of the vehicle body in accordance with the result of the discrimination.

REFERENCES:
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patent: 5066041 (1991-11-01), Kindermann et al.
patent: 5104143 (1992-04-01), Yonekawa
patent: 5138554 (1992-08-01), Wada
patent: 5159555 (1992-10-01), Wada
patent: 5177681 (1993-01-01), Sato
patent: 5204815 (1993-04-01), Yamamoto

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