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. 04, 2021
Filed:
Apr. 06, 2017
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Yasunori Oyama, Akashi, JP;
KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe, JP;
Abstract
A robot control device having a drive shaft driven by a servo motor including a non-excited operation type electromagnetic brake. The electromagnetic brake is configured to perform a braking operation by pressing an armature against a friction plate by an urging force of a spring when an excitation coil is not energized, and to cancel a brake operation by attracting the armature to the excitation coil side against the urging force of the spring to separate the armature from the friction plate when the excitation coil is energized. A coil current flowing through the excitation coil is obtained and the robot is controlled based on the characteristic of time change of the obtained coil current. A robot control device capable of shortening a cycle time, estimating the life of the electromagnetic brake, performing abnormality diagnosis and the like with a relatively simple configuration can be provided.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile