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. 01, 2011
Filed:
Dec. 19, 2007
Applicants:
Ronald Paul Russ, Farmington Hills, MI (US);
Jeff Turner, Canton, MI (US);
Inventors:
Ronald Paul Russ, Farmington Hills, MI (US);
Jeff Turner, Canton, MI (US);
Assignee:
Visteon Global Technologies, Inc., Van Buren Township, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 8/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A detector device and a method for detecting a stall condition in a stepper motor, wherein the characteristics of the back EMF are identified directly from a waveform of the back EMF, specifically a first peak of the back EMF, a valley of the back EMF, and a second peak of the rectified integral of the back EMF, to determine a condition of the stepper motor.