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:
Nov. 04, 2008
Filed:
Dec. 12, 2006
Yasusuke Iwashita, Yamanashi, JP;
Takahiro Akiyama, Yamanashi, JP;
Masakazu Niwa, Yamanashi, JP;
Fanuc Ltd, Yamanashi, JP;
Abstract
A fixed-position stop control apparatus () includes: a move-instruction generating means () for generating a move instruction for each control cycle; a position loop control means () for position controlling a rotation shaft () for each control cycle according to the move instruction generated by the move-instruction generating means; and a speed loop control means () for speed controlling the rotation shaft according to one of a speed instruction generated by a higher level control apparatus () and a predetermined speed instruction, thereby switching the speed control of the rotation shaft by the speed loop control means to the position control of the rotation shaft by the position loop control means. In this fixed-position stop control apparatus, the move instruction generated by the move-instruction generating means has acceleration smaller than the acceleration corresponding to the acceleration and deceleration ability of the rotation shaft. With this arrangement, time required for the rotation shaft to stop at a fixed position can be decreased.