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:
May. 04, 2010
Filed:
Jan. 24, 2007
Seikai Yo, Toride, JP;
Kazuo Nakano, Komae, JP;
Nobuhiro Fujiwara, Moriya, JP;
Hiroshi Miyachi, Tokyo, JP;
Masatoshi Hatakeyama, Machida, JP;
Seikai Yo, Toride, JP;
Kazuo Nakano, Komae, JP;
Nobuhiro Fujiwara, Moriya, JP;
Hiroshi Miyachi, Tokyo, JP;
Masatoshi Hatakeyama, Machida, JP;
SMC Kabushiki Kaisha, Tokyo, JP;
Abstract
A positioning control system has a disturbance observer for estimating a disturbance from a displaced distance of a cylinder of a controlled object, and feeding back an estimated disturbance. The positioning control system also includes a saturation element and a low-pass element disposed in a feedback loop including the disturbance observer, and a saturated value changer for changing a saturated value of the saturation element based on a deviation. The saturation element is disposed in a forward path of a positive-feedback minor loop, whereas the low-pass element is disposed in a feedback path of the positive-feedback minor loop.