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:
Jan. 24, 2006
Filed:
Jun. 02, 2003
Steven E. Schulz, Torrance, CA (US);
Nitinkumar R. Patel, Cypress, CA (US);
James M. Nagashima, Cerritos, CA (US);
Yu-seok Jeong, Seoul, KR;
Seung Ki Sul, Seoul, KR;
Steven E. Schulz, Torrance, CA (US);
Nitinkumar R. Patel, Cypress, CA (US);
James M. Nagashima, Cerritos, CA (US);
Yu-Seok Jeong, Seoul, KR;
Seung Ki Sul, Seoul, KR;
General Motors Corporation, Detroit, MI (US);
Abstract
A method for controlling an electric machine having current sensors for less than every phase of the electric machine includes operating a processor to perform a test to preliminarily determine whether a fault exists in one or more of the current sensors and a test to finally determine that the fault exists in the one or more current sensors. The method further includes operating the processor to utilize a state observer of the electric machine to estimate states of the electric machine, wherein the state observer is provided state input measurements from each non-faulty current sensor, if any. Measurements from the current sensor or sensors determined to be faulty are disregarded. The processor controls the electric machine utilizing results from the state observer.