Inventors:
Donald John Enzinna - Lockport NY
Mark Joseph Parisi - East Amherst NY
Assignee:
Delphi Technologies, Inc. - Troy MI
International Classification:
H02P 100
US Classification:
318280, 318256, 318282, 318283, 318284, 318285, 318286, 318466, 318467, 318468, 318469, 318293, 318626, 318696, 318 10
Abstract:
A method of operation for a motor-driven worm gear actuator coupled to a load device energizes the motor in a series of pulses during an initial period of motor operation when reversal of the motor is commanded. The pulsed energization produces a slow initial axial movement of the motor armature without moving the load device, minimizing the contact force between the armature shaft and a mechanical end stop of the motor. Rotation of the motor is determined by identifying and counting motor current pulses due to commutation, and the pulse count is adjusted at each reversal of motor rotation to compensate for motor current pulses due to the pulsed energization.