Basic Function

Fig 1: Dynamic Steering Basic Function

Courtesy of AUDI OF AMERICA, LLC

1. Active Steering Control Module -J792-
2. Control Signal
3. Electro-Mechanical Drive (Actuator)
4. Steering Movements Made by the Driver
5. Chamber
6. Effective Steering Angle

A superimposed gear (actuator) is integrated in the steering harness, refer to ACTUATOR . A superposition gearbox (actuator) integrated in the steering system maintains the mechanical connection between the steering wheel and the front axle in all situations. In the event of serious system faults, the shaft of the superposition gearbox locks in order to prevent malfunctioning. This prevents malfunctions. The control module determines whether an increase or reduction in steering angle is needed. The control module activates an electric motor, which drives the superposition gearbox. The total steering angle of the wheels is determined from the total overlap angle and the driver steering input. The overlap angle can:

• Increase the driver's steering input.
• Reduce the driver's steering input.
• Implement a steering angle without any steering input from the driver.