The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 2019
Filed:
Jun. 17, 2016
Robert Bosch Automotive Steering Gmbh, Schwäbisch Gmünd, DE;
Wilfried Leutner, Schwäbisch Gmünd, DE;
Viktor Fast, Schwäbisch Gmünd, DE;
Rainer Woeger, Schwäbisch Gmünd, DE;
Robert Bosch Automotive Steering GmbH, Schwäbisch Gmünd, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
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.