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. 26, 2016
Filed:
Jan. 25, 2012
Applicant:
Kengo Uda, Okazaki, JP;
Inventor:
Kengo Uda, Okazaki, JP;
Assignee:
JTEKT CORPORATION, Osaka-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 27/00 (2006.01); G05B 5/01 (2006.01); H02P 6/08 (2016.01); F16H 61/00 (2006.01);
U.S. Cl.
CPC ...
F04D 27/00 (2013.01); F16H 61/0031 (2013.01); G05B 5/01 (2013.01); H02P 6/085 (2013.01); F16H 2061/0078 (2013.01);
Abstract
An electric pump device of an aspect of the invention includes a state determination unit and a gain adjusting unit. The state determination unit determines whether or not the electric pump device is in a stable state where a required oil pressure is supplied to a hydraulic operating device by maintaining a rotation state of a motor. The gain adjusting unit adjusts a gain for a current feedback control so as to reduce responsiveness of the current feedback control when the state determination unit determines that the electric pump device is in the stable state.