Activation of stepper motor controllers

The AHL control unit sends the reference values for the swivel modules (values relating to the position of the swivel modules and the speed of swivel movement) to the stepper motor controllers. The AHL control unit calculates the nominal values on the basis of the following input signals:

• Car road speed
• Steering angle (at speeds up to 50 km/h, depending on programming)
• Yaw rate (50 km/h upwards, see "Steering angle sensor and DSC sensor" above)