Detecting imbalance and air pressure by using the steering moment

摘要

The method involves measuring the steering torque or torques applied to the steered wheel or wheels by an electrical servomotor (13,14). A detection step detects whether the steering torque varies periodically depending on the revolution rate of the steered wheels. An evaluation step generates a signal representing an imbalance on the two steered wheels (Vl,Vr) or on a relevant steered wheel if the result of the detection step is positive