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:
Oct. 06, 2026
Filed:
Mar. 18, 2022
Hitachi Astemo, Ltd., Hitachinaka, JP;
Kohei Myoen, Hitachinaka, JP;
Kentaro Mikawa, Hitachinaka, JP;
Yuki Yamabe, Hitachinaka, JP;
Takuro Toyoda, Hitachinaka, JP;
Junki Isobe, Hitachinaka, JP;
Hitachi Astemo, Ltd., Ibaraki, JP;
Abstract
A motor control device that is connected to an angle sensor that outputs a sine wave signal and a cosine wave signal that change according to a magnetic pole position of a motor, and that calculates the magnetic pole position on the basis of the sine wave signal and the cosine wave signal output from the angle sensor to control the motor using the magnetic pole position, the motor control device including: a phase difference calculation unit that calculates a difference between phases of the sine wave signal and the cosine wave signal; and a phase change unit that changes and corrects the phases of the sine wave signal and the cosine wave signal, respectively, by the same amount so that the phase difference being corrected becomes 90 degrees in terms of an electrical angle on the basis of the phase difference calculated by the phase difference calculation unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile