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. 23, 2017
Filed:
May. 29, 2012
Atsushi Sakawaki, Kusatsu, JP;
Yuji Nakazawa, Kusatsu, JP;
Yusuke Irino, Kusatsu, JP;
Naoya Yamashita, Kusatsu, JP;
Atsushi Sakawaki, Kusatsu, JP;
Yuji Nakazawa, Kusatsu, JP;
Yusuke Irino, Kusatsu, JP;
Naoya Yamashita, Kusatsu, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A stator is provided which exerts a combined electromagnetic force of a plurality of electromagnets on a drive shaft having a fluctuating load. A controller is provided which controls a current difference between a first coil current passed through a coil of the electromagnet generating an electromagnetic force in a direction opposite to that of the load and a second coil current passed through a coil of the electromagnet generating an electromagnetic force in the same direction as that of the load to perform a position control on the drive shaft. The controller adjusts the second coil current to reduce an average value of the second coil current.