Anti-skid control based on duty cycle adjustment

Details Anti-skid control based on duty cycle adjustment Anti-skid control based on duty cycle adjustment

1986-06-24

1989-01-24

Chin, Gary

Boots, shoes, and leggings

303100, 303DIG4, B60T 834

Patent

active

048004987

ABSTRACT:
Disclosed is an anti-skid control system incorporated in the hydraulic pressure braking apparatus of a motor vehicle including a wheel braking cylinder responsive to a hydraulic pressure developed by a master cylinder for braking a wheel of the vehicle. The anti-skid control system comprises a hydraulic pressure supplying device and a directional control valve provided between the wheel braking cylinder and the hydraulic pressure supplying device. The directional control valve is actuated to shut off the communication therebetween and the actuation thereof is controlled in accordance with a duty cycle, which is in turn updated in accordance with the difference between a wheel speed and a target wheel speed so that the slip ratio of the wheel becomes equal to a target slip ratio.

REFERENCES:
patent: 3637264 (1972-01-01), Leiber et al.
patent: 3782783 (1974-01-01), Jones
patent: 3915508 (1975-10-01), Grosseau
patent: 3953083 (1976-04-01), Latvala et al.
patent: 4054328 (1977-10-01), Leiber et al.
patent: 4123116 (1978-10-01), Carp et al.
patent: 4430714 (1984-02-01), Matsuda et al.
patent: 4615410 (1986-10-01), Hosaka
patent: 4648663 (1987-03-01), Nomura et al.

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