Patent ID: 9002583
Filing Date: 2015-04-07
Classification: B62D

Abstract:
1. A method of compensating for steering wheel rotary oscillations due to imbalances on wheels of a vehicle during operation of a steering system in said vehicle, said steering system comprising an activatable torque actuator, the method comprising: determining a current torsion bar torque; determining a compensation torque as a function of the current torsion bar torque; and activating the torque actuator as a function of the compensation torque; wherein the torsion bar torque or a first variable determined as a function of the torsion bar torque is fed to a variable-frequency disturbance variable and state variable calculator which contains a model of a sinusoidal disturbance of steering wheel rotary oscillations and a model of a transmission behavior from a torque of the torque actuator; and wherein the compensation torque is determined by the variable-frequency disturbance variable and state variable calculator using the model of the sinusoidal disturbance of steering wheel rotary oscillations.