Patent ID: 6651494
Filing Date: 2003-11-25
Classification: F16D,G01L

Abstract:
A process for determining wear of a holding brake using an electronically controlled brake test, the holding brake comprising a brake applicable to a shaft drivable by a motor for preventing rotation of the shaft when the motor is off, said process comprising the steps of:(a) presetting a reference angular position for the motor to attempt to travel during the brake test and which deviates from a current actual angular position and presetting a maximum torque to be applied by the motor to the shaft while attempting to travel to the reference angular position during the brake test; (b) applying a torque not greater than the maximum torque for attempting to rotate the motor and the shaft to the reference angular position while the holding brake is applied; (c) determining the existence of wear when the shaft rotates during said step (b); and (d) determining the absence of wear when the shaft does not rotate during step (b).