Components
1. Steering wheel; 2. Electric motor; 3. EPS control unit; 4. Steering gear assembly; 5. Torque sensor; 6. Reducer; A. Signal processing by the sensor; B. Sensor signal; C. Torque boost signal (motor drive); D. Power supply of the ignition system; E. CAN link (H); F. CAN communication line (L); G. Power supply; H. Mass
Electric Power Steering Operation
| Component | Purpose |
| Electric power steering control unit (EPS) | Provides an optimal torque boost signal to the electric motor in proportion to the force of the steering wheel (sensor signal) from the torque sensor and the vehicle speed signal from the CAN bus.
Reduces output signals to the motor and provides protection to the motor and EPS control unit during continuous and excessive use of the electric power steering. In the event of a malfunction in the electrical system, emergency mode is initiated, the output signal to the electric motor is interrupted and the steering switches to manual mode. The EPS warning light comes on to indicate a system failure. Manages the exchange of information with other control units via the CAN bus. Allows you to diagnose the system using the close CONSULT-II |
| electric motor | Generates boosted torque from a signal from the EPS control unit. |
| torque sensor | Detects the force of rotation of the steering wheel and sends a signal to the EPS control unit. |
| Reducer | Amplifies the torque generated by the electric motor through the worm gear and transmits it to the steering shaft |
| EPS indicator lamp | Illuminates when the emergency mode is activated and indicates the switch to manual steering mode.
Illuminates when the ignition key is turned to position «ON» to check the functionality and goes out after starting the engine. |