What is the working principle of the power steering system?

[StBethany]

The working principle of the power steering system is that when the steering shaft rotates, the torque sensor converts the relative angular displacement between the input shaft and output shaft caused by the torsion bar into an electrical signal and transmits it to the ECU. The ECU determines the rotation direction of the motor and the magnitude of the assist current based on signals from the vehicle speed sensor and torque sensor, thereby achieving real-time control of power steering. The solutions for when the power steering system warning light illuminates are: 1. Check whether the generator, power steering pump, and steering gear mechanism are damaged; 2. Inspect all connection points for looseness; 3. Verify that the tire pressure is at normal levels; 4. Replace the power steering pump or steering gear components.