Adaptive active vehicle suspension system

Details Adaptive active vehicle suspension system Adaptive active vehicle suspension system

1992-12-21

1995-07-11

Chin, Gary

Boots, shoes, and leggings

280707, B60G 17015

Patent

active

054327008

ABSTRACT:
An adaptive active suspension system for a wheeled vehicle in which a powered actuator supplies a force between an unsprung wheel assembly and the vehicle body. The actuator is controlled by a signal from a feedback control system whose dynamic properties are determined by control gain values stored in a memory. The stored control gain values are calculated to simultaneously reduce vehicle body acceleration, tire deflection and suspension displacement (stroke). A road profile estimator provides an indication of predicted road roughness and, as road roughness varies, the effective stiffness of the suspension system is adaptively altered while maintaining a substantially constant ratio between tire deflection and suspension stroke. To reduce the computational burden on the system, the control gains are pre-computed for a range of varying road conditions and stored in memory. The current control gains in effect may be updated on a substantially continuous basis or, to further reduce the amount of computing required, may be altered only when the current estimate of road roughness departs from a predetermined range of values.

REFERENCES:
patent: 4281188 (1989-04-01), Ikemoto et al.
patent: 4826141 (1989-05-01), Buma et al.
patent: 4827416 (1989-05-01), Kawagoe et al.
patent: 4872116 (1989-10-01), Ito et al.
patent: 4897776 (1990-01-01), Urababa et al.
patent: 4924392 (1990-05-01), Kurosawa
patent: 4924393 (1990-05-01), Kurosawa
patent: 4927170 (1990-05-01), Wada
patent: 4934732 (1990-06-01), Fukunaga et al.
patent: 4936604 (1990-06-01), Kawagoe et al.
patent: 4937748 (1990-06-01), Yonekawa et al.
patent: 4948164 (1990-08-01), Hano et al.
patent: 4949261 (1990-08-01), Ito et al.
patent: 4949262 (1990-08-01), Buma et al.
patent: 4951207 (1990-08-01), Furukawa et al.
patent: 5134566 (1992-07-01), Yokoya et al.
patent: 5142477 (1992-08-01), Tsutsumi et al.
patent: 5243525 (1993-09-01), Tsutsumi et al.
patent: 5322319 (1994-06-01), Tanaka et al.
D. Hrovate et al, "A Comparison Between Jack Optimal and Acceleration Optimal Vibration Isolation", Journal of Sound and Vibration (1987) 112:201-210.
D. Hrovat, "Influence of Unsprung Weight on Vehicle Ride Quality", Journal of Sound and Vibration (1988) 124:497-516.

Affiliated with

Also associated with

Rating

Adaptive active vehicle suspension system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive active vehicle suspension system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive active vehicle suspension system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-508199