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. 10, 2022
Filed:
Aug. 21, 2020
Fanuc Corporation, Yamanashi, JP;
Akira Yamaguchi, Yamanashi, JP;
FANUC CORPORATION, Yamanashi, JP;
Abstract
A temperature abnormality detection device that detects an abnormality in temperature of a motor including a stator and a rotor, includes: a temperature acquisition unit that acquires a temperature of a winding of the stator; a speed acquisition unit that acquires a rotation speed of the rotor; an allowable value changing unit that changes an allowable value for the temperature of the winding in accordance with an acquired rotation speed of the rotor; a comparison unit that compares an acquired temperature of the winding with a changed allowable value for the temperature of the winding based on the rotation speed of the rotor; and an output control unit that controls an external output of a warning signal indicating an excess of the temperature of the winding with respect to the allowable value.