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:
Aug. 27, 2019
Filed:
Jun. 18, 2018
Fanuc Corporation, Yamanashi, JP;
Yuuki Morita, Yamanashi-ken, JP;
Kenji Takahashi, Yamanashi-ken, JP;
Tadashi Okita, Yamanashi-ken, JP;
FANUC CORPORATION, Yamanashi, JP;
Abstract
An anomaly diagnosing device diagnoses an anomaly in a single motor driven by multiple motor drive units. The multiple motor drive units supply AC currents to multiple multi-phase windings of the motor to drive the motor. The anomaly diagnosing device includes: a power consumption calculator for calculating power consumption in each of the multi-phase windings; a power difference calculator for calculating a difference in power consumption between the multi-phase windings; and a determination unit for determining that an anomaly is occurring when the absolute value of the difference has exceeded a threshold for a predetermined period of time.