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:
Apr. 29, 2025
Filed:
Jan. 25, 2023
Mitsubishi Electric Corporation, Tokyo, JP;
Akihiro Sawada, Tokyo, JP;
Makoto Matsumoto, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An electric motor control device includes a current detection unit, an interface unit, a switching unit, and an arithmetic processing unit. A detection signal of a current detected by the current detection unit is input to the interface unit. The interface unit includes a plurality of filters having time constants different from one another, and performs filtering processing on the detection signal. The switching unit controls power supplied to an electric motor. The arithmetic processing unit uses, as a selected filter, a filter selected from among the plurality of filters based on the length of a control pulse. The arithmetic processing unit uses, as a detected current value, a value obtained by A/D conversion of a processed signal that is the detection signal on which the filtering processing has been performed with the selected filter.