Principle and Maintenance of Electric Power Steering?
1 Answers
Electronic power steering works by connecting a torque sensor to the steering shaft (pinion shaft). When the steering shaft rotates, the torque sensor activates. Here are the details: 1. Basic Principle: The relative angular displacement between the input and output shafts caused by the torsion bar is converted into an electrical signal and sent to the ECU. The ECU determines the motor's rotation direction and the magnitude of the assist current based on signals from the vehicle speed sensor and torque sensor, achieving real-time control of power steering. This ensures different levels of motor assistance at varying speeds, providing light and flexible steering at low speeds and stable, reliable steering at high speeds. 2. Troubleshooting: The "EPS" warning light or a "steering wheel" warning light may illuminate. To diagnose, connect a computer diagnostic tool to read the fault code and proceed with repairs accordingly. Common issues include sensor or motor failures.