Frequency shaping method for minimizing impact harshness of susp

Details Frequency shaping method for minimizing impact harshness of susp Frequency shaping method for minimizing impact harshness of susp

1990-12-17

1993-06-08

Black, Thomas G.

Boots, shoes, and leggings

280707, B60G 1708

Patent

active

052185460

ABSTRACT:
An active suspension system is disclosed for a motorized vehicle and the like. Generally these types of active suspension systems have an impact harshness to sharp road irregularities higher than that of passive suspension systems. This invention incorporates a frequency response shaping network (42) which alters the frequency signal from a hub sensor (36) by analyzing the frequency signal in view of its components of magnitude and phase, and shaping these components into a desired form. The modified or shaped signals are then applied to the basic control laws of the vehicle dynamics to modify the damping signal applied to an active actuator (38) in such a way that the actuator (38) applies the appropriate damping to the vehicles wheels (32) with greatly reduced harshness.

REFERENCES:
patent: 4984820 (1991-01-01), Uchiyama et al.
patent: 5033770 (1991-07-01), Kamimura et al.
patent: 5062660 (1991-11-01), Satoh et al.
patent: 5075855 (1991-12-01), Sugasawa et al.
patent: 5097419 (1992-03-01), Lizell

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