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:
Apr. 29, 2008
Filed:
Aug. 03, 2004
Makoto Tanahashi, Aichi pref., JP;
Yasuhiko Suzuki, Aichi pref., JP;
Makoto Tanahashi, Aichi pref., JP;
Yasuhiko Suzuki, Aichi pref., JP;
Yamazaki Mazak Corporation, Niwa Gun, Aichi Pref., JP;
Abstract
A machine tool moves a driven member by use of a servomotor. A position control device controls the position of the driven member in accordance with full closed loop control. The position control device computes an integrated feedback value g in correspondence with a function F (V, P, V, P) in which four state amounts, motor speed V, motor position P, driven member speed V, and driven member position Pare independent variables. The thrust instruction τ*, which is inputted to the servomotor, is compensated with the integrated feedback value g. The servomotor is thus optimally driven and controlled in accordance with full closed loop control.