Rear Actuator

Rear actuator:





The rear actuator is mounted at the rear of the car to steer the rear wheels. The motor, built into the actuator, is made up of a stator with a permanent magnet, a rotor, and brushes that pass electricity to the commutators. The motor is mounted on the same axis as the steering shaft screw, making the rear actuator compact and light in weight. The rear actuator also contains the rear main steering angle sensor and the rear sub steering angle sensor.

The control unit drives the electric motor with DC current. It switches the current polarity to change the motor's direction. Two strong return springs, one at each end of the actuator, provide a centering action. They return the rear wheels to the straight-ahead position whenever current is cut to the motor.

The return spring compresses when the steering shaft screw moves to right or left. When the motor is OFF, the steering shaft screw is held in the straight ahead (neutral) position by the force of the return spring.