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:
Mar. 01, 2016
Filed:
May. 29, 2014
Sinfonia Technology Co., Ltd., Tokyo, JP;
Kobelco Construction Machinery Co., Ltd., Hiroshima-shi, Hiroshima, JP;
Takeshi Tomizaki, Tokyo, JP;
Yuichi Hamaguchi, Tokyo, JP;
Takeo Ito, Tokyo, JP;
Akira Nakazumi, Hiroshima, JP;
Yusuke Kamimura, Hiroshima, JP;
SINFONIA TECHNOLOGY CO., LTD., Tokyo, JP;
KOBELCO CONSTRUCTION MACHINERY CO., LTD., Hiroshima-shi, JP;
Abstract
There is provided a motor controller capable of suppressing the rotation of a motor at the time of discharging an electric accumulator, and a construction machine provided with the motor controller. A motor controlleris provided with a current controllerfor controlling an electric current supplied from an electric accumulator E to a motor M, and a rotation detectorfor detecting the rotation of the motor M. The current controllersupplies only a d-axis current to the motor M according to a discharge command. If the rotation of the motor M is detected by the rotation detectorat the time of discharging the electric accumulator E, the current controllercontrols the d-axis current so as to suppress the rotation of the motor M.