Motor driven power steering system of redundancy structure

A motor driven power steering system of a redundancy structure, the system comprising:

• a driving motor configured to drive a steering wheel;
• first and second power circuits configured to supply control power;
• first and second driving circuits configured to drive the driving motor;
• first and second position sensors configured to detect a rotational position of the driving motor;
• and
• first and second processors operatively coupled to the driving motor,
• wherein the first processor is operatively coupled to the first power circuit, the first position sensor, and the first driving circuit, and
• the second processor is operatively coupled to the second power circuit, the second position sensor, and the second driving circuit,
• wherein the first processor is configured to receive a first steering control signal from an upper-level control device to allow the first driving circuit to be operated based on the first position sensor, thereby allowing the driving motor to be operated, and
• the second processor is configured to receive a second steering control signal from the upper-level control device to allow the second driving circuit to be operated based on the second position sensor, thereby allowing the driving motor to be operated, and
• wherein the first position sensor is configured to transmit each of a first position signal and a first comparison signal to the first processor.