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:
Jul. 21, 2026
Filed:
Apr. 01, 2022
Mitsubishi Electric Corporation, Tokyo, JP;
Shinsaku Maeda, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A drive apparatus includes a power circuit and a deterioration determining device. The power circuit outputs, to a load, a current including a current component having a frequency determined by a natural frequency of at least one member of the load or a vibratory member to vibrate when receiving vibration resulting from an electromagnetic excitation force generated in the load or by a value of a natural number multiple of a rotation frequency of a rotator that is one of the at least one member. The deterioration determining device generates frequency domain data based on a sensor signal output by a vibration sensor and determines deterioration of the at least one member of the load or the vibratory member based on a value of a frequency spectrum indicated by the frequency domain data at the natural frequency or the rotation frequency used to determine the frequency of the current component.