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. 13, 2013
Filed:
Jan. 27, 2012
Applicant:
Masashi Miyaji, Aichi, JP;
Inventor:
Masashi Miyaji, Aichi, JP;
Assignee:
OKUMA Corporation, Niwa-gun, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B 11/01 (2006.01); G05B 5/01 (2006.01); G05B 1/06 (2006.01); G05D 23/275 (2006.01);
U.S. Cl.
CPC ...
Abstract
A position control apparatus calculates a position detection value by adding an output of a first-order delay circuitthat receives a difference between a driven member position detection value Pl and a motor position detection value Pm to the motor position detection value Pm, and uses the obtained position detection value as a position feedback value. An aging correctorsuppresses low frequency vibrations by controlling a time constant Tp of the first-order delay circuitin such a way as to increase the time constant when a vibratory state of the driven member is detected.