System for vehicle body roll control detecting and compensating

Details System for vehicle body roll control detecting and compensating System for vehicle body roll control detecting and compensating

1987-03-16

1988-08-23

Love, John J.

Land vehicles

Wheeled

Running gear

280703, B60G 1702

Patent

active

047656492

ABSTRACT:
In this system for vehicle roll control, a suspension device or an actuator is provided corresponding to each wheel of a vehicle, and resiliently suspends it from the vehicle body. Each such suspension device can alter its hardness or softness characteristics according to a control signal, while similarly the actuators are adapted to alter the suspended height of their wheels. A vehicle speed detecting device senses road speed, a steering angle detecting device senses steering angle, and a device detects the total vehicle body weight. A computing control device computes a predictive roll angle of the vehicle body from road speed and steering angle, and: if suspension devices are provided, controls them to be relatively hard when the absolute value of the predictive roll angle is larger than a threshold value, while controlling them to be relatively soft when the absolute value of the predictive roll angle is less than this threshold value; while, if actuators are provided, when the absolute value of the predictive roll angle is larger than a threshold value, it controls them in accordance with this predictive roll angle. Particularly, this computing device varies the threshold roll angle value according to the total vehicle body weight as detected by the weight detector, so as to decrease the threshold roll angle value along with increase of the total vehicle body weight.

REFERENCES:
patent: 4693493 (1987-09-01), Ikemoto et al.
Patent Abstracts of Japan, vol. 8, No. 220 (M-330)[1657], 6th Oct. 1984; & JP-A-59 102 610 (Isuzu) 13-06-1984.
Patent Abstracts of Japan, vol. 10, No. 55 (M-458)[2112], 5th Mar. 1986; JP-A-60 23517 (Nissan) 15-10-1985.
Patent Abstracts of Japan, vol. 9, No. 206 (M-406)[1929], 23rd Aug. 1985; JP-A-60 67210 (Kayaba Kogyo) 17-04-1985.

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