Methods and apparatus to control electro-mechanical brakes
AssigneeHoneywell International Inc.
InventorJames Russell Phillips
Life of this patent
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Abstract
Methods and apparatus to control electro-mechanical brakes are disclosed. A disclosed example method of controlling a brake actuator comprises receiving a value representative of a velocity of a piston associated with the brake actuator relative to a pressure plate mounted on a wheel, and determining a control input for the brake actuator based on the velocity value.
Claims5
A method of controlling a brake actuator having a piston to contact a brake member without determining an absolute position of the piston or the brake member, by utilizing a velocity of the piston relative to the brake member which has a non-constant contact position relative to the piston, comprising:
- receiving a velocity signal representative of a velocity of a piston associated with a brake actuator relative to a brake member for a wheel;
- determining continuously an estimated velocity signal of the piston relative to the brake member;
- determining a difference between the received velocity signal and the estimated velocity signal;
- updating continuously the estimated velocity signal based on the difference;
- determining an estimated position signal representative of an estimated position of the piston relative to the brake member based on the updated estimated velocity signal;
- and
- combining the received velocity signal and the estimated position signal of the piston to determine a control input signal to adjust a force applied by the brake actuator to brake the wheel.
Dependencies are inferred from the claim text.