| 摘要 |
An electro hydraulic brake system is provided to improve the stable braking by actively controlling the valve even at the cryogenic or hot temperature by containing the PD and PI controllers each calculating the braking pressure inclination and the valve control value. An electro hydraulic brake system for controlling the hydraulic pressure and operating the braking by the opening and closing the valve is composed of a pedal simulator calculating the reference braking pressure according to the operation of the brake pedal when braking; and an ECU(Electronic Control Unit) controlling the valve according the calculated reference braking pressure and controlling the braking pressure of the wheel. The ECU contains a PD controller(110) calculating the braking pressure inclination with an PD control in which the difference of the reference braking pressure and the real wheel pressure is an output, and a PI controller(120) calculating the valve control value with a PI control in which the difference of the output valve of the PD controller and the differential value of the real wheel pressure is an output. |
