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:
Jan. 17, 2012
Filed:
Sep. 09, 2010
Tadashi Okita, Minamitsuru-gun, JP;
Yukio Toyozawa, Minamitsuru-gun, JP;
Naoto Sonoda, Minamitsuru-gun, JP;
Tadashi Okita, Minamitsuru-gun, JP;
Yukio Toyozawa, Minamitsuru-gun, JP;
Naoto Sonoda, Minamitsuru-gun, JP;
FANUC Ltd, Minamitsuru-gun, Yamanashi, JP;
Abstract
A servomotor control system that includes a numerical control unit and servo control unit enables the use of learning control based on an angle synchronization method in high-speed oscillating motion performed by, for example, a jig grinder. The numerical control unit calculates a reference angle θ(=ωt), and also calculates a cyclic oscillation command F(t) according to the reference angle θ and a machining condition (angular velocity ω). The servo control unit calculates a difference between the value in the oscillation command F(t) and the position of the servomotor (positional difference ε) at intervals of a predetermined cycle, and performs learning control according to the reference angle θ, oscillation command F(t), and positional difference ε.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile