Suspension controller

Details Suspension controller Suspension controller

1991-12-19

1993-11-02

Rice, Kenneth R.

Land vehicles

Wheeled

Running gear

280714, 280772, 280DIG1, B60G 1126

Patent

active

052578143

ABSTRACT:
A suspension controller includes a controller that actuates devices for charging and discharging a pressure fluid into and from front and rear wheel-side cylinders. The controller has first-order lag circuits including first-order lag elements with different time constants. In the early stage of a steering operation, the rear wheel-side cylinders carry a higher travelling load than that shared by the front wheel-side cylinders on the basis of transverse acceleration data detected with a transverse acceleration sensor, so that excellent vehicle turning characteristics can be obtained. After a predetermined time has elapsed, the front wheel-side cylinders are also subjected to control based on the transverse acceleration data, so that the load is shared between the front and rear wheel-side cylinders in a well-balanced manner. Thus, excellent convergence is obtained.

REFERENCES:
patent: 5033770 (1991-07-01), Kamimura et al.
patent: 5060968 (1991-10-01), Edahiro et al.
patent: 5060969 (1991-10-01), Kamimura et al.
patent: 5060970 (1991-10-01), Kamimura et al.
patent: 5062659 (1991-11-01), Edahiro et al.
"Development of a Hydraulic Active Suspension by Nissan", a summary of a scientific lecture given during the Oct. 18, 1989 meeting of the Society of Automotive Engineers of Japan, Inc. (published Oct. 6, 1989).

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