System for vehicle body roll control performing suspension hardn

Details System for vehicle body roll control performing suspension hardn System for vehicle body roll control performing suspension hardn

1986-10-21

1989-01-10

Chin, Gary

Boots, shoes, and leggings

280707, 280 6H, B60G 1700

Patent

active

047978236

ABSTRACT:
In this roll control system, suspension means are provided for resiliently suspending the vehicle wheels with variable hardness/softness characteristics, each suspension means including an actuator with a pressure chamber which increases or decreases wheel suspension height according to the supply or discharge of working fluid. Working fluid supply/discharge means are provided for the actuators, to supply and discharge working fluid to and from actuator pressure chambers. The road speed, the steering angle, and the actual body roll angle are detected. Means for computing and control computes a steady state vehicle body roll angle .phi..sub..infin. from the vehicle speed and steering angle, advances the phase of a signal indicative of .phi..sub..infin. to compute a compensating roll angle value .PHI..sub..infin., and then computes a difference value .phi. based upon a desired roll angle .phi..sub.a, .PHI..sub..infin., and the actual roll angle .phi..sub.t, according to the equation:

REFERENCES:
patent: 4564214 (1986-01-01), Tokunaga et al.
patent: 4605244 (1986-08-01), Tanaka et al.
patent: 4621832 (1986-11-01), Nakashima et al.
patent: 4624476 (1986-11-01), Tanaka et al.
patent: 4625993 (1986-12-01), Williams et al.
patent: 4693493 (1987-09-01), Ikemoto et al.
patent: 4697237 (1987-09-01), Tanaka et al.

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