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:
Nov. 26, 2019
Filed:
Dec. 18, 2017
Fanuc Corporation, Yamanashi, JP;
Fuyuki Sugiura, Yamanashi-ken, JP;
Motohiro Nagaya, Yamanashi-ken, JP;
FANUC CORPORATION, Yamanashi, JP;
Abstract
An abnormality determination device includes: an oscillating signal sending unit configured to send out an oscillating signal which causes a rotary shaft of a servomotor to rotate and swing in a predetermined pattern, to a motor control unit configured to control the servomotor; a measuring unit configured to measure a physical quantity representing the state of the servomotor when the rotary shaft of the servomotor is swung; a comparing unit configured to compare a measurement signal of the measured physical quantity with a reference signal; and an abnormality determination unit configured to determine occurrence of an abnormality in a drive system which includes the servomotor and the motor control unit and ranges from a driven object to be driven by the servomotor to the motor control unit, based on comparison result from the comparing unit.