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What are the components of an automotive electric power steering system?

1 Answers

DelEliana

07/29/25 5:08pm

The components of an automotive electric power steering system are: torque sensor, vehicle speed sensor, electronic control unit (ECU), electric motor, and electromagnetic clutch. The electric power steering system uses the power generated by the electric motor to assist the driver in steering. The working principle of the electric power steering system is as follows: the torque sensor is connected to the steering shaft (pinion shaft). When the steering shaft rotates, the torque sensor starts working, converting the relative angular displacement between the input and output shafts caused by the torsion bar into an electrical signal and transmitting it to the ECU. The ECU determines the rotation direction of the electric motor and the magnitude of the assist current based on the signals from the vehicle speed sensor and torque sensor, thereby achieving real-time control of the power steering.

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