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:
Jan. 27, 2026
Filed:
Oct. 01, 2019
Subaru Corporation, Tokyo, JP;
Yukio Karasawa, Tokyo, JP;
Shogo Oki, Tokyo, JP;
SUBARU CORPORATION, Tokyo, JP;
Abstract
A motor control apparatus includes first and second detectors, and a switcher. The first detector detects a rotation position of a rotor using a signal from a resolver, and allows resolution of the rotation position to become lower in a region where a rotation speed of the rotor is higher than a first predetermined value, than in a region where the rotation speed is equal to or lower than the first predetermined value. The second detector estimates the rotation position using a current of the motor. The switcher switches between a first control and a second control in the region where the rotation speed is equal to or lower than the first predetermined value. The first control includes controlling the motor using the rotation position detected by the first detector. The second control includes controlling the motor using the rotation position estimated by the second detector.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile