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. 04, 2025
Filed:
Jan. 12, 2022
Applicant:
Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;
Inventors:
Assignee:
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 23/09 (2006.01); G01R 29/02 (2006.01); G01R 29/027 (2006.01); G01R 31/00 (2006.01); G01R 31/34 (2020.01); H02P 27/08 (2006.01);
U.S. Cl.
CPC ...
G01R 29/0273 (2013.01); G01R 23/09 (2013.01); G01R 29/023 (2013.01); G01R 31/006 (2013.01); G01R 31/34 (2013.01); H02P 27/085 (2013.01);
Abstract
A method is provided for testing switch signals of an inverter of an electric machine of a drive system of a motor vehicle. The electric machine is controlled via a pulse-width modulation generated by a control unit using a target duty cycle and a triangular-waveform voltage sequence. An actual duty cycle of a current pulse-width modulation is continuously ascertained from the switch signals and compared with the target duty cycle of the control unit.