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. 08, 2003
Filed:
Jun. 25, 2002
Applicant:
Inventor:
Kazuhiko Tsutsui, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B 1/101 ;
U.S. Cl.
CPC ...
G05B 1/101 ;
Abstract
Magnitudes of a sine-wave component and a cosine-wave component of a periodical disturbance are estimated in real time during motor rotating, the sine-wave component and the cosine-wave component at the frequency of the disturbance estimated are combined, and the result is added to a current command as a correction value in real time during the normal motor driving for controlling servomotor, thereby suppressing the effect of the periodical disturbance.