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. 14, 2017
Filed:
Feb. 08, 2011
Wei D. Wang, Troy, MI (US);
Bon Ho Bae, Torrance, CA (US);
Leah Dunbar, Manhattan Beach, CA (US);
Kevin P. Houle, Flint, MI (US);
William R. Cawthorne, Milford, MI (US);
Andrew M. Zettel, Ann Arbor, MI (US);
Hanne Buur, Brighton, MI (US);
Steven E. Schulz, Torrance, CA (US);
Wei D. Wang, Troy, MI (US);
Bon Ho Bae, Torrance, CA (US);
Leah Dunbar, Manhattan Beach, CA (US);
Kevin P. Houle, Flint, MI (US);
William R. Cawthorne, Milford, MI (US);
Andrew M. Zettel, Ann Arbor, MI (US);
Hanne Buur, Brighton, MI (US);
Steven E. Schulz, Torrance, CA (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A method for monitoring an electrically-powered torque machine configured to generate torque in a hybrid powertrain system includes monitoring signal outputs of a resolver configured to monitor rotational position of the torque machine. Upon detecting a fault warning state associated with the signal outputs of the resolver, a motor torque capacity of the torque machine is derated. Upon a clearing of the fault warning state, a torque ramp-up state to increase the motor torque capacity of the torque machine is executed. Notice of an incidence of a fault associated with the signal outputs of the resolver is provided only when the motor torque capacity fails to achieve a threshold motor torque capacity within a threshold recovery time period while executing the torque ramp-up state.