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. 20, 2026
Filed:
Feb. 06, 2024
Zhejiang University of Technology, Zhejiang, CN;
Jianfeng Mao, Zhejiang, CN;
Yinghao Hu, Zhejiang, CN;
Xu Zhang, Zhejiang, CN;
Fujiong Zhao, Zhejiang, CN;
Hongjin Chen, Zhejiang, CN;
Yuchen Wang, Zhejiang, CN;
ZHEJIANG UNIVERSITY OF TECHNOLOGY, Zhejiang, CN;
Abstract
A sensorless control method and a system for PMSM based on Luenberger observer. The system includes a power supply circuit, a sampling circuit, a main control circuit and a drive circuit. The power supply circuit supplies power to other circuits. The sampling circuit is used to obtain the three-phase current of the motor. The main control circuit outputs the control signal to the drive circuit to run the PMSM. The present invention uses an improved method for selecting the feedback coefficient of Luenberger observer, which makes the selection of Luenberger observer feedback coefficient more convenient and effective. Moreover, it can select optimal parameters globally based on this method, leading to adaptive adjustment of feedback coefficients for better observer performance when the rotational speed influences the position of the pole of the observer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile