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:
Apr. 22, 2014
Filed:
Nov. 08, 2010
Frederic Bonvin, Longmont, CO (US);
Davide Betta, Barzano, IT;
Agostino Mirabelli, Lomello, IT;
Andrea Di Ruzza, Roccasecca, IT;
Frederic Bonvin, Longmont, CO (US);
Davide Betta, Barzano, IT;
Agostino Mirabelli, Lomello, IT;
Andrea Di Ruzza, Roccasecca, IT;
STMicroelectronics, Inc., Coppell, TX (US);
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
A system and method for determining the start position of a motor. According to an embodiment, a voltage pulse signal may be generated across a pair of windings in a motor. A current response signal will be generated and based upon the position of the motor, the response signal will be greater in one pulse signal polarity as opposed to an opposite pulse signal polarity. The response signal may be compared for s specific duration of time or until a specific integration threshold has been reached. Further, the response signal may be converted into a digital signal such that a sigma-delta circuit may smooth out glitches more easily. In this manner, the position of the motor may be determined to within 60 electrical degrees during a startup.