Boots – shoes – and leggings
Patent
1987-03-20
1989-04-25
Chin, Gary
Boots, shoes, and leggings
303 97, 303106, 180197, B60T 834
Patent
active
048253715
ABSTRACT:
An anti-skid control system for a motor vehicle, includes a brake fluid pressure buildup-control mode and a brake fluid pressure reduction mode, each of which occur cyclically. In each buildup-control mode, a control valve is repetitively opened and closed so that brake fluid pressure buildup and holding operations are performed alternately. The time period of each buildup-control mode is from a high peak of a wheel speed signal until a point of intersection between a reference velocity V.sub.W0 and the wheel speed V.sub.W. The reference velocity V.sub.W0 has an initial point Q positioned under the high peak V.sub.HP of the wheel speed V.sub.W by a velocity value .DELTA.V and extending straight at a gradient .theta.. The speed value .DELTA.V, the gradient .theta., and an initial pressure buildup time T.sub.P, in each building-control mode, are determined in accordance with the wheel acceleration in the preceding wheel acceleration, i.e., coefficient of friction of the road surface.
REFERENCES:
patent: 4637663 (1987-01-01), Matsuda
patent: 4662686 (1987-05-01), Matsuda
patent: 4717209 (1988-01-01), Hagiya et al.
patent: 4741580 (1988-05-01), Matsubara et al.
Akima Hideo
Hoashi Akira
Miyake Katsuya
Yamaki Isao
Chin Gary
Fujitsu Limited
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