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:
Dec. 12, 2023
Filed:
Jan. 09, 2020
Minebea Mitsumi Inc., Nagano, JP;
Hiroyuki Kato, Fukuroi, JP;
Takamichi Kitano, Kakegawa, JP;
MINEBEA MITSUMI Inc., Nagano, JP;
Abstract
A motor drive control device capable of driving a motor at high efficiency is provided. A control unit () of a motor drive control device () outputs a control signal to a motor drive unit () to control operation of an inverter circuit () for energizing a motor (). The control unit () detects an actual rotational speed of the motor (), detects a power-supply voltage, detects a magnitude of current flowing in the motor (), and calculates a magnitude of driving torque of the motor () based on detection results. The control unit () compares a reference rotational speed obtained based on the calculated magnitude of the driving torque of the motor () and the actual rotational speed of the motor (), and determines an advance angle value based on a comparison result. The control unit () outputs the control signal based on the determined advance angle value.