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:
Mar. 22, 2011
Filed:
Mar. 31, 2006
Hidetoshi Ikeda, Chiyoda-ku, JP;
Yoshihiro Marushita, Chiyoda-ku, JP;
Kei Terada, Chiyoda-ku, JP;
Takashi Isoda, Chiyoda-ku, JP;
Hiroto Takei, Chiyoda-ku, JP;
Hidetoshi Ikeda, Chiyoda-ku, JP;
Yoshihiro Marushita, Chiyoda-ku, JP;
Kei Terada, Chiyoda-ku, JP;
Takashi Isoda, Chiyoda-ku, JP;
Hiroto Takei, Chiyoda-ku, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An accurate load position control is made possible even when rigidity of a load drive system using a motor is relatively low. Load position signal xis a present-position measurement value of a load, and after compensation in response to a phase delay thereof has been performed by a stability compensation circuit, the high-frequency portion thereof is taken as a control-target position signal xby replacing, in a position-signal combination circuit, a motor position signal xm as a present-position measurement value of a motor, and then the control-target position signal xis fed back to a position control circuit. Thereby, a torque command signal indicating a torque target value for driving the load is outputted.