초록 ▼

A braking force control system for a motor vehicle, in which a hydraulic pressure control device controls a hydraulic pressure generated by the master cylinder or the pump, in such a way that a target braking torque (Nr in FIG. 1) is calculated from a target slip factor (Sr) and an actual slip facto

A braking force control system for a motor vehicle, in which a hydraulic pressure control device controls a hydraulic pressure generated by the master cylinder or the pump, in such a way that a target braking torque (Nr in FIG. 1) is calculated from a target slip factor (Sr) and an actual slip factor (S), the target braking torque (Nr) is converted into a target braking hydraulic pressure (Pr), and that an estimative braking hydraulic pressure (P) currently under action is calculated by the use of a hydraulic pressure model, while the controlled variable of the hydraulic pressure control device is calculated from the estimative braking hydraulic pressure (P) and the target braking hydraulic pressure (Pr) by the use of a reverse hydraulic pressure model. Thus, the hydraulic pressure can be controlled in conformity with the actual motion state of the motor vehicle.

대표청구항 ▼

A braking force control system for a motor vehicle, having a hydraulic pressure control device which controls a hydraulic pressure generated by a master cylinder or a pump in a braking system, so as to increase or decrease in accordance with a drive state of the motor vehicle, comprising: actual-sli

A braking force control system for a motor vehicle, having a hydraulic pressure control device which controls a hydraulic pressure generated by a master cylinder or a pump in a braking system, so as to increase or decrease in accordance with a drive state of the motor vehicle, comprising: actual-slip-factor calculation means for calculating an actual slip factor of a wheel; target-braking-torque calculation means for calculating a target braking torque from a preset target slip factor and said calculated actual slip factor so that a wheel speed may come to afford the target slip factor; target-braking-hydraulic-pressure conversion means for converting said target braking torque into a target braking hydraulic pressure; detection means for detecting said hydraulic pressure generated by the master cylinder or the pump; estimative-braking-hydraulic-pressure calculation means for calculating an estimative braking hydraulic pressure which is estimated to be currently acting in the braking system, from said detected hydraulic pressure and a past value of said estimative braking hydraulic pressure by the use of a hydraulic pressure model; and controlled-variable calculation means for calculating a controlled variable of the hydraulic pressure control device from said calculated estimative braking hydraulic pressure and the target braking hydraulic pressure by the use of a reverse hydraulic pressure model.