System for controlling active suspensions of a vehicle
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United States of America Patent
Stats
-
May 12, 1992
Grant Date -
N/A
app pub date -
May 22, 1990
filing date -
May 29, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a system for controlling active suspensions of a motor vehicle, having fluid suspensions for the respective wheels, a longitudinal acceleration sensor, a lateral acceleration sensor, control valves for the respective suspensions, and a controller for producing a control quantity to adjust the control valves to charge and discharge fluid into and out of the fluid suspensions so as to control the vehicle attitude, the reaction force of each suspension is detected and a mean value of the suspension reaction force is calculated to determine the loading condition of the vehicle while the vehicle is driven straight ahead at a constant speed. The control quantity is corrected by a correcting circuit so as to match the loading condition of the vehicle whereby the vehicle attitude is precisely controlled so as to match the vehicle weight even in such a transient state as acceleration, deceleration and turning. The internal pressure of each suspension may be detected as the reaction force.
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