Apparatus for controlling hydraulic pressure to be applied...

Details Apparatus for controlling hydraulic pressure to be applied... Apparatus for controlling hydraulic pressure to be applied...

B - Operations, Transporting

60

T

341/73.4

B60T 8/58 (2006.01)

Patent

CA 1305236

"Apparatus for Controlling Hydraulic Pressure to be Applied to Effect Braking of Wheels" ABSTRACT OF THE DISCLOSURE A wheel slipping control apparatus for controlling a braking hydraulic pressure to be applied to a wheel so as to perform an effective braking operation. The wheel slipping control apparatus comprises a control unit for generating a control signal in accordance with the wheel slipping state so as to perform a braking pressure control cycle so that the braking hydraulic pressure is set to a pressure decreasing mode and then to a pressure increasing mode. In the control unit, one of the braking pressure control cycles to be performed is determined as a learning control cycle to obtain a learning pressure-decreased value decremented in the learning control cycle and to obtain a learning pressure-increased value incremented in the learning control cycle. A present pressure-decreased value decremented in a control cycle after the learning control cycle is obtained to calculate a target pressure-increased value on the basis of the obtained learning pressure-decreased value and learning pressure-increased value whereby the braking hydraulic pressure is first increased to the vicinity of a wheel locking limit pressure after being decreased in the pressure-decreasing mode.

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