•  The EPS motor is a permanent magnet brushless motor. It has a rotor structure which consists of a magnet and a resolver rotor, and a stator structure with a core and coil inside the stator housing.

•  The rotor moves together with the balls and nut of the ball screw. When the rotor rotates so do the balls and nut.

•  When the current from the EPS control module is applied to the stator, the balls and nut rotate together with the rotor.

•  The resolver sensor detects the rotor position and transmits the EPS motor rotation angle (rotor position) signal to the EPS control module.

•  The EPS control module switches the current sent to the stator based on the EPS motor rotation angle (rotor position) signal from the resolver sensor.