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:
Feb. 09, 2010
Filed:
Jan. 30, 2007
Zhengrong LI, Zhe Jiang Province, CN;
Wei Qian, Shanghai, CN;
Peter B. Schmidt, Franklin, WI (US);
Sang Hoon Lee, Yongin, KR;
Zhengrong Li, Zhe Jiang Province, CN;
Wei Qian, Shanghai, CN;
Peter B. Schmidt, Franklin, WI (US);
Sang Hoon Lee, Yongin, KR;
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
Systems and methods that determine resonant frequencies of a motor system via employing an output of a velocity regulator. The velocity regulator enables the motor drive to command the rotation of the motor at predetermined rotations, by setting rotational speeds of the motor. The output of the velocity regulator can then be stored as a function of time, and a Fast Fourier Transform performed on such time data to obtain a frequency data and a signal power spectrum.