Activation of Stepper Motor Controllers

The control unit for adaptive headlights sends the stepper motor controllers (SMC) the nominal values for the positioner modules (position of positioner modules and speed of movement).

The control unit for adaptive headlights calculates the nominal values using the following signals:

• Vehicle road speed
• Steering angle (at speeds up to 50 km/h, dependent on encoding)
• Yaw rate (50 km/h upwards, see STEERING-ANGLE SENSOR AND DSC SENSOR  above)