Apparatus and method for independently controlling damping force

Details Apparatus and method for independently controlling damping force Apparatus and method for independently controlling damping force

1994-03-22

1996-01-30

Teska, Kevin J.

Boots, shoes, and leggings

280707, B60G 1700

Patent

active

054885566

ABSTRACT:
An apparatus and method for controlling damping force characteristics of shock absorbers independently of one another, the damping force coefficient for each shock absorber being controlled on the basis of so-called "sky hook" theory with respective sprung mass vertical velocities and relative velocities between the sprung mass and unsprung mass taken into consideration. The relative velocity detecting sensors are only installed on portions of the vehicle related to front left and right tire wheels. The road surface velocities on the front left and right tire wheels are calculated and the road surface velocities on the rear left and right tire wheels are calculated on the basis of the calculated front left and right wheel road surface velocities, a vehicular wheel base length, and a vehicle speed. Then, relative velocities between the sprung mass and unsprung mass related to the rear left and right tire wheels are calculated on the basis of the calculated rear left and right tire wheel road surface velocities and sprung mass vertical velocities related to the vicinities of the rear left and right tire wheels.

REFERENCES:
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patent: 5096219 (1992-03-01), Hanson et al.
patent: 5144558 (1992-09-01), Fukushima et al.
patent: 5208749 (1993-05-01), Adachi et al.
patent: 5301130 (1994-04-01), Alcone et al.
EPO Search Report; Patent Abstracts of Japan, vol. 16, No. 519, Oct. 26, 1992 Patent abstracts of Japan, vol. 17, No. 177; Patent Abstract of Japan, vol. 17, No. 186, Dec. 4, 1993; Patent Abstracts of Japan, vol. 16, No. 538, Sep. 11, 1992; Patent Abstracts of Japan, vol. 17, No. 304; Oct. 6. 1993.

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