| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a brake system that can accurately set control origin position.SOLUTION: When a control origin position of a resolver 48 is detected, after a master cylinder 1 is interrupted from a wheel cylinder 67 by cut valves 201, 301, a booster piston 21 is moved forward in a hydraulic pressure generating direction by an electric actuator 30. A position that is retreated by predetermined amount from a position detected by the resolver 48 (position when hydraulic pressure is generated) when the generation of the hydraulic pressure is detected by a hydraulic pressure sensor 71 is set as the control origin position. Thus the control origin position can be set accurately. Since control is performed by using the accurately set control origin position, dragging and response delay that might occur when the control origin position is not set appropriately can be suppressed and durability of a system can be improved. Moreover, operation feeling of a driver during braking can be improved.</p> |
