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. 20, 2007
Filed:
Apr. 21, 2005
Shaotang Chen, Troy, MI (US);
Sayeed A. Mir, Saginaw, MI (US);
Tom C. Wong, Saginaw, MI (US);
Christian Ross, Hemlock, MI (US);
Tomy Sebastian, Saginaw, MI (US);
Shaotang Chen, Troy, MI (US);
Sayeed A. Mir, Saginaw, MI (US);
Tom C. Wong, Saginaw, MI (US);
Christian Ross, Hemlock, MI (US);
Tomy Sebastian, Saginaw, MI (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A method of interfacing an electromagnetic sensor with a controller in a motor control system, the method including: applying an excitation signal to the electromagnetic sensor; receiving a first electromagnetic sensor output signal based on the excitation signal, the first electromagnetic sensor signal comprising an amplitude modulated signal corresponding to a position of a rotor of the electromagnetic sensor; and receiving a second electromagnetic sensor output signal based on the excitation signal, the second electromagnetic sensor signal comprising another amplitude modulated signal corresponding to the position of the rotor of the electromagnetic sensor. The method also includes sampling the first electromagnetic sensor signal and the second electromagnetic sensor signal at about an instance synchronous with the excitation signal to demodulate the first electromagnetic sensor signal and the second electromagnetic sensor signal and decoding a resultant of the sampling to identify the position of a rotor of the electromagnetic sensor.