| 摘要 |
PROBLEM TO BE SOLVED: To improve practicability of a hydraulic brake system, in which a boosting linear valve 26 and a decompression linear valve 28 control pressure of hydraulic fluid supplied from a high pressure source device 22 and a brake control system 12 generates brake force whose magnitude depends on the controlled pressure.SOLUTION: The hydraulic brake system can selectively executes, as control of exciting current supplied to a boosting linear valve and a decompression linear valve: a feedback control based on deviation between actual servo pressure Pand target servo pressure; and a feedforward control, based on the target servo pressure, to be performed by achieving a valve opening/closing equilibrium state of the boosting linear valve and the decompression linear valve. The feedforward control supplies the boosting linear valve and the decompression linear valve with larger exciting current than the preset exciting current according to a relationship between the servo pressure and the exciting current in the valve opening/closing equilibrium state. Thereby securing sufficient brake force even in the feedforward control. |
