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. 07, 2013
Filed:
Sep. 25, 2009
Kazuomi Maeda, Minamitsuru-gun, JP;
Yukio Toyozawa, Minamitsuru-gun, JP;
Yasusuke Iwashita, Minamitsuru-gun, JP;
Kazuomi Maeda, Minamitsuru-gun, JP;
Yukio Toyozawa, Minamitsuru-gun, JP;
Yasusuke Iwashita, Minamitsuru-gun, JP;
FANUC Ltd, Minamitsuru-gun, Yamanashi, JP;
Abstract
In position tandem control in which one movable member is driven by two motors, an output of the integral element of the velocity control unit in the control system for one motor is copied to the integral element of the velocity control unit in the control system for the other motor. A preload is added to a torque command output from each of the velocity control units in the motor control systems for two motors so that torques in mutually opposite directions are generated to suppress backlash between gears.