Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1990-05-08
1991-03-05
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303100, 303103, 303110, 36442602, B60T 870, B60T 864
Patent
active
049972367
ABSTRACT:
An antiskid brake control system comprises: braking force adjusting device for decreasing and increasing a braking force to be applied to at least one wheel so that the wheel is prevented from being locked at the time of braking a vehicle with the braked wheel; wheel speed detecting device for detecting the speed of the wheel to which the braking force is applied; wheel deceleration detecting device for detecting acceleration/deceleration of the wheel to output information on the deceleration of the wheel; decreasing amount calculation device for receiving the information on the vehicle deceleration, and for outputting a signal indicative of a decrease in the braking force to the braking force adjusting device when detecting a tendency of the wheel to lock wherein the wheel deceleration exceeds a given value; first deceleration period measurement device for measuring the period where the pressure-decreasing signal is being outputted, and for outputting information on the first deceleration period; maximum deceleration detecting device for detecting the maximum value of the wheel deceleration; second deceleration period measurement device for starting to measure the lapse of a period from the time when the maximum value of the wheel deceleration has been detected, and for outputting information on the second deceleration period; and increasing amount calculation device for finding a control amount required to increase the braking force, based on the information on the first deceleration period and on the information on the second deceleration period, and for outputting the required control amount to the braking force adjusting device.
REFERENCES:
patent: 4054328 (1977-10-01), Leiber et al.
patent: 4681374 (1987-07-01), Nakamura et al.
Mori Akihiko
Naito Yasuo
Yamada Yasuhiro
Butler Douglas C.
Mitsubishi Denki & Kabushiki Kaisha
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