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. 27, 2021
Filed:
Aug. 01, 2017
Nidec Corporation, Kyoto, JP;
Ahmad Ghaderi, Kyoto, JP;
NIDEC CORPORATION, Kyoto, JP;
Abstract
A motor control method includes acquiring at least one measured torque angle and two estimated torque angles, obtaining all combinations of two torque angles that are combinable with respect to a set of the at least one measured torque angle and the two estimated torque angles and performing an arithmetic operation to determine an error for each combination, selecting a control mode of the motor from control modes including a sensor mode, a sensorless mode, and a shutdown mode, the selecting being performed by referring to a table representing a relationship between the control modes and reference patterns relating to the calculated error group, and controlling the motor in accordance with the selected control mode.