Patent ID: 6188947
Filing Date: 2001-02-13
Classification: B60T,F04B

Abstract:
A system for controlling at least one vehicle wheel brake comprising:a pump which supplies pressurized brake fluid to the controlled wheel brake;a motor connected to said pump for driving said pump;a control valve connected between said pump and the controlled wheel brake, said control valve operable to control the flow of pressurized brake fluid from said pump to the controlled wheel brake;a sensor for measuring the speed of said pump motor; anda controller electrically connected to said pump motor speed sensor and said pump motor, said controller operative to provide power to said pump motor and to control said pump motor speed as a function of said sensed pump motor speed by de-energizing said pump motor when said sensed pump motor speed is greater than a motor speed threshold and to maintain said pump motor in a de-energized state while said sensed pump motor speed is greater than said motor speed threshold.