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:
May. 19, 2015
Filed:
Feb. 08, 2012
Applicant:
Daisuke Hirono, Isesaki, JP;
Inventor:
Daisuke Hirono, Isesaki, JP;
Assignee:
SANDEN CORPORATION, Gunma, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 21/00 (2006.01); H02P 6/18 (2006.01); H02P 21/14 (2006.01);
U.S. Cl.
CPC ...
H02P 6/182 (2013.01); H02P 21/0042 (2013.01); H02P 21/146 (2013.01);
Abstract
A motor control device that can improve stability of sensorless control of a permanent magnetic synchronous motor. Rotor position detection () includes motor parameter correction () for correcting a parameter (winding resistance of a coil, a magnetic flux amount of a permanent magnet), which is a machine constant of a motor, in order to eliminate an induced voltage difference between a detected induced voltage peak value and a detected estimated induced voltage peak value. The rotor position is detected on the basis of the corrected parameter.