The Electric Power Steering System (EPS) is mainly composed of the following components:
Torque sensor: used to detect the torque change of the steering wheel, convert the mechanical signal into an electrical signal, and transmit it to the electronic control unit (ECU).
Vehicle speed sensor: used to measure the speed of the vehicle and provide it to the ECU so that the output power of the motor can be adjusted according to the vehicle speed to ensure easy driving at low speed and stable and reliable at high speed.
Motor: provides auxiliary torque according to the instructions of the ECU to help the driver turn the steering wheel easily.
Electronic Control Unit (ECU): receives signals from the torque sensor and the vehicle speed sensor, calculates and controls the output of the motor, and realizes dynamic adjustment of the power effect.
Deceleration mechanism: reduces the high-speed rotation of the motor and converts it into a low-speed high-torque output suitable for steering operation.
Working principle of the electric power steering system: When the driver turns the steering wheel, the torque sensor detects the torque change and sends a signal to the ECU. According to the vehicle speed signal and torque signal, the ECU controls the motor to provide appropriate auxiliary torque, which is transmitted to the steering system through the deceleration mechanism, thereby reducing the steering force of the driver.
The advantages of the electric power steering system include:
Energy saving and environmental protection: The electric power steering system does not require hydraulic oil, reducing the energy consumption and pollution of the hydraulic system.
Fast response speed: Because it is electronically controlled, it has a fast response speed and provides instant power assistance.
Low maintenance cost: It reduces the complexity and maintenance requirements of the hydraulic system and reduces maintenance costs.
Strong adaptability: It can dynamically adjust the power assistance according to vehicle speed and steering requirements to provide a better driving experience.
