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:
Oct. 03, 2017
Filed:
Mar. 16, 2015
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Chandra S. Namuduri, Troy, MI (US);
Suresh Gopalakrishnan, Troy, MI (US);
Thomas Wolfgang Nehl, Shelby Township, MI (US);
Avoki M. Omekanda, Rochester, MI (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/20 (2006.01); F02M 51/00 (2006.01); F02M 51/06 (2006.01); G01K 13/00 (2006.01); G01R 31/06 (2006.01); H01F 7/18 (2006.01); H01F 7/16 (2006.01);
U.S. Cl.
CPC ...
F02D 41/20 (2013.01); F02M 51/005 (2013.01); F02M 51/061 (2013.01); G01K 13/00 (2013.01); G01R 31/06 (2013.01); H01F 7/1844 (2013.01); F02D 2041/2058 (2013.01); F02D 2041/2065 (2013.01); H01F 7/1638 (2013.01);
Abstract
A method for parameter estimation in an electromagnetic actuator having an electrical coil and an armature includes applying a voltage pulse to the electrical coil of the actuator prior to an actuator event and of sufficient duration to ensure that a resulting electrical current achieves steady state. At least one parameter of the actuator is estimated based upon the voltage pulse and the steady state current.