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. 28, 2013
Filed:
Mar. 12, 2009
Applicants:
Hirohito Maeda, Osaka, JP;
Motonobu Ikeda, Osaka, JP;
Satoshi Yagi, Osaka, JP;
Keisuke Shimatani, Osaka, JP;
Masafumi Hashimoto, Osaka, JP;
Inventors:
Hirohito Maeda, Osaka, JP;
Motonobu Ikeda, Osaka, JP;
Satoshi Yagi, Osaka, JP;
Keisuke Shimatani, Osaka, JP;
Masafumi Hashimoto, Osaka, JP;
Assignee:
Daikin Industries, Ltd., Osaka-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/06 (2006.01); H02P 6/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
Triggered by a position detection sensor detecting that a rotor is positioned at any one of K predetermined electrical angles, for example, 60°, 180°, and 300°, a voltage vector to be given to a motor is updated. When, for example, the rotation frequency is equal to or higher than a specified value, the predetermined electrical angles is changed into M, for example, into one angle of 60°.