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. 15, 2016
Filed:
May. 29, 2014
Sinfonia Technology Co., Ltd., Tokyo, JP;
Kobelco Construction Machinery Co., Ltd., Hiroshima-shi, Hiroshima, JP;
Takeo Ito, Tokyo, JP;
Hideaki Moriya, Tokyo, JP;
Takeshi Tomizaki, 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 obtained a configuration capable of rapidly decelerating a motor even if a failure occurs in the communication between a controller and a motor control unit in a motor controller in which a speed command is input from the controller to the motor control unit. A motor controlleris provided with a main controller, and a motor control unitconfigured to be communicable with the main controllerto drive a motor M according to a torque command output from the main controller. The motor control unitincludes a speed control unitfor outputting a torque command, so as to decelerate the motor M, if any failure occurs in communication with the main controllerwhile the motor M is being driven.