For the practical conversion of an active steering element, the steering input is first de-coupled from the steering movement of the front wheels.
The de-coupling can be realised by the construction of a mechanically isolated steering. Two D-C Servo Actuators coupled to gearboxes and safety clutches ensure the desired operation. Thus, on the one hand the angles through which the wheels turn, which is ideally specified by the Controller, can be produced, while on the other hand an artificial steering force reaction for the driver can be generated. The motors are appropriate for steering movements in the normal dynamic range. In case of a malfunction, the conventional operation of a rigid steering system can be re-created over the spring accumulator (pre-stressed spring) as well as a toothed clutch. The motors in this case are separated by their own magnetic clutches. It should be mentioned that this steering construction guarantees operation in the context of research investigations, and is not however optimised regarding its fail-safe functions yet.