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:
Feb. 28, 2023
Filed:
Feb. 12, 2018
Schaeffler Technologies Ag & Co. KG;
Markus Dietrich, Oberkirch, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
A method for maintaining a detected absolute position of an electric motor operating as an actuator during a critical operation involves the electric motor () being controlled by a controller () which is supplied with energy from an energy source. In the method, with which an absolute value sensor can be omitted, the absolute position of the electric motor () is measured during the operation thereof, wherein rotations of the electric motor () are detected. The rotations are counted, and a count value is output to a microprocessor () of the controller () in order to actuate the electric motor (), and in the event of a critical operation, the currently detected count value is maintained by means of an independent voltage supply ().