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. 05, 2021
Filed:
Nov. 22, 2018
Nidec Corporation, Kyoto, JP;
Nidec Elesys Corporation, Kanagawa, JP;
Shuji Endo, Kyoto, JP;
Hajime Nakane, Kanagawa, JP;
Takuya Yokozuka, Kanagawa, JP;
Mikio Morishima, Kyoto, JP;
Tokuji Tatewaki, Kanagawa, JP;
NIDEC CORPORATION, Kyoto, JP;
NIDEC ELESYS CORPORATION, Kanagawa, JP;
Abstract
A technique for reducing an operation noise even when a high-pass filter is used for controlling a motor is provided. A controller is used in a motor control system for driving a motor by using a drive circuit and an inverter. The controller includes a current control block. The controller performs feedforward control by using a current value, compensates for a term of a self-inductance of the motor included in a current control block by an inverse model, compensates for a phase characteristic of a transfer function of the inverse model by an advance component, and corrects a gain characteristic of the transfer function of the inverse model by a function of a physical quantity obtained based on an angular velocity of the motor, thereby compensating for a phase delay and a gain reduction of a torque output generated by the self-inductance.