APPARATUS AND METHOD FOR DETECTING AND PREVENTING MOVEMENT OF A MOTOR IN A DEVICE OF SYSTEM

摘要

The present invention relates to a motor driving system (20) which is configured to detect and prevent undesired movement of a product (12, 50) configured to be driven by the motor driving system (20). The motor driving system includes an electric control unit (42) coupled to a rotor (26) of the motor driving system (20) to be operable, the electric control unit (42) is configured to detect undesired rotation of a shaft (34) of the rotor (26), the undesired rotation of the shaft (34) is not caused by force applied by the rotor (26), the electric control unit (42) of the motor driving system (20) is configured to short-circuit winding (36) of the motor driving system (20) to prevent additional rotation of the rotor (26) after the preset amount of undesired rotations of the shaft (34) is detected by the electric control unit (42).