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:
Aug. 25, 2020
Filed:
Jul. 28, 2016
Applicant:
Thk Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
THK CO., LTD., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B 11/42 (2006.01); G05B 11/36 (2006.01); G05B 19/19 (2006.01); G05B 19/402 (2006.01); G05B 19/404 (2006.01); G05D 3/20 (2006.01);
U.S. Cl.
CPC ...
G05B 11/42 (2013.01); G05B 11/36 (2013.01); G05B 19/19 (2013.01); G05B 19/402 (2013.01); G05B 19/404 (2013.01); G05D 3/20 (2013.01);
Abstract
A new position control apparatus is provided which can reduce deviation caused by a non-linear spring characteristic of a rolling apparatus. In a position control apparatus () that controls the position of a movable body (), in a positioning apparatus () including a rolling apparatus (), a deviation e(t) or d of the movable bodycaused by the non-linear spring characteristic of the rolling apparatus () is subtracted from or added to a position command Xref or r of the movable body (). The deviation d is calculated by carrying out equivalent exchange on a control circuit for a friction force of the rolling apparatus (), which is set as a quantity of the dimension of displacement.