Motor-reduction gear unit with torque transducer, uses transformer with one winding on fixed part and other winding on rotating part, with current in rotary winding controlled by transmitted torque

摘要

The motor-reduction gear unit (5) has an electric motor driving a window through a gear transmission. An electrical transformer is used to measure torque delivered by the transmission. The fixed winding (31) is supplied with alternating current and delivers a signal to a measuring circuit (30). The rotating part (27) is attached to the rotor and its current is controlled by torque delivered.