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:
Sep. 29, 2015
Filed:
Dec. 30, 2013
Zf Lenksysteme Gmbh, Schwaebisch Gmuend, DE;
Thomas Kuehnhoefer, Heubach, DE;
Alexander Krautstrunk, Durlangen, DE;
Robert Bosch Automotive Steering GmbH, Gmuend, DE;
Abstract
A method for operating an electric motor which is used as an electric servo drive in an electronic power steering system of a motor vehicle for power assistance and which has a number of magnetic elements and phase windings and is actuated and/or controlled by an electronic control unit of the electronic power steering system, wherein a temperature of at least one magnetic element of the electric motor is continuously determined during the operation of the electric motor by way of a temperature model and wherein, based on the temperature of the at least one magnetic element of the electric motor determined by way of the temperature model, an electrical current flowing in at least one of the phase windings of the electric motor is limited, taking into account a predeterminable limit temperature of the at least one magnetic element of the electric motor.