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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.:

US 7190134 B1

PDFFull Text
Expired
Date of Patent:
Mar. 13, 2007

Filed:

Nov. 25, 2003

Torsional vibration suppressing method and apparatus in electric motor speed control system

Applicants:

Naotake Shibata, Fukuoka, JP;

Keisuke Sonoda, Fukuoka, JP;

Masao Ikeguchi, Fukuoka, JP;

Hirotaka Toujinbara, Fukuoka, JP;

Inventors:

Naotake Shibata, Fukuoka, JP;

Keisuke Sonoda, Fukuoka, JP;

Masao Ikeguchi, Fukuoka, JP;

Hirotaka Toujinbara, Fukuoka, JP;

Assignee:

Kabushiki Kaisha Yaskawa Denki, Fukuoka, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Karen Masih

Int. Cl.
CPC ...
H02P 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

It is an object of the invention to provide a torsional vibration suppressing apparatus further including an inertia control portion capable of suppressing a feeble vibration in a torsional vibration suppressing control portion. The invention includes inertia control means () for calculating and outputting an inertia control signal Tfrom an electric motor acceleration torque signal Tobtained by multiplying a signal acquired by differentiating an electric motor mean speed signal Nby an inertia time constant τof the electric motor portion, electric motor acceleration torque control means () for calculating a torque command compensation signal Tfrom a deviation signal of a signal Tobtained by decreasing Tfrom a torque command signal Tand the electric motor acceleration torque signal T, and electric motor torque control means for controlling a current of the electric motor in order to obtain an electric motor torque in accordance with a torque command Tto be a sum of Tand T.

Find Patent Forward Citations

Shibata, Naotake. (2007). Torsional vibration suppressing method and apparatus in electric motor speed control system (U.S. Patent No. 7190134). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7190134

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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