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. 22, 2013
Filed:
Jan. 20, 2009
Toshiaki Sato, Kusatsu, JP;
Toshiaki Sato, Kusatsu, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A motor drive control device is configured to control driving of a brushless DC motor including a stator having drive coils, a rotor having plural magnetic poles, and plural position detecting units that output position detection signals representing position of the rotor with respect to the stator. The motor drive control device includes a drive voltage generating unit configured to generate and output drive voltages to the motor to drive the motor. An abnormality detecting unit can be used to detect abnormality of the position detection signals. When abnormality of at least one of the position detection signals has been detected by the abnormality detecting unit, the motor drive control device can drive the motor based on at least one of the remaining position detection signals excluding the position detection signal that has been detected as abnormal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile