Steering assistance
Integrated in the system is the Servotronic, the electronic control of the speed-dependent steering power assistance. The EPS control unit determines the required steering power assistance from various input variables.
| Item | Explanation |
|---|---|
| 1 | Moment of steering power assistance |
| 2 | Driving speed |
| 3 | Steering torque applied by driver |
Characteristic maps for the support and damping characteristics are stored in the control unit. The values calculated from the input variables added to each characteristic curve result in the necessary steering power assistance. The servomotor and reduction gear provide the steering power assistance.
Important input variables for steering power assistance are:
- Driving speed
- Steering torque on the driver side via steering torque sensor
- Current vehicle voltage
- Operating temperature
The EPS adapts the deviation of the signals from the motor position sensor and steering angle sensor (e.g. curbed roadway with straight-ahead driving).