Method for sequentially determining rotor layer angle of electromotor in electronic power steering device of motor car, involves utilizing counter voltage as control signal to adjust change of sensor power source and processing circuit

摘要

The method involves supplying a rotor layer sensor and a signal processing circuit periodically with current in a deactivated operating mode of an electronic power steering device (1) according to predetermined time intervals to detect eventual changes of a rotor layer angle of an electromotor (9). Counter voltage is induced in a regenerative mode during rotation of the electromotor in the operating mode of the electronic power steering device and utilized as a control signal for adjustment of temporary change of power source of the rotor layer sensor and the signal processing circuit. An independent claim is also included for an electronic regulating- and/or control unit for controlling an electromotor of an electrical servo-drive of an electronic power steering device of a motor car.