Robert Boschgmbh

Robert Bosch Automotive Steering Gmbh

Rainer Woeger

Wilfried Leutner

Viktor Fast

The disclosure relates to a method and to devices for operating a power steering system. wherein a motor torque applied by an electric motor is superposed on a specified manual torque, wherein a beginning freezing of the power steering system is detected by means of suitable measures, and wherein the electric motor is controlled with an oscillating control signal to avoid the freezing of the power steering system, whereby an oscillating application of a shaking torque to the power steering system, applied by the electric motor, is effected. A control signal that has first time spans in which the control signal has an increased amplitude and second time spans in which the control signal has no amplitude or a reduced amplitude is generated, whereby the shaking torque is produced with an increased maximum torque in the first time spans, without thermal overloading of the electric motor.

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Schwäbisch Gmünd, Germany

Rainer Woeger