What are the components of electric power steering?

[McCarlos]

Electric power steering consists of a steering column, torque sensor, servo motor, control module, and other components. The electric power steering system, also known as the EPS system, is a power steering system that directly relies on an electric motor to provide auxiliary torque. Unlike hydraulic power steering systems, the EPS system does not include components such as a hydraulic pump, hydraulic lines, or steering column valve body. Instead, it transmits the motor-generated assistance to the steering system purely mechanically through a reducer. Principle of the electric power steering system: When the vehicle starts, the system begins to operate. When the vehicle speed is below a certain threshold, these signals are sent to the control module. The control module then issues control commands to the servo motor based on data such as steering wheel torque, rotation direction, and vehicle speed, causing the servo motor to output torque of corresponding magnitude and direction to generate assistance. When no steering input is detected, the electronic control unit does not send torque signals to the servo motor, and the current in the servo motor tends toward zero.