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:
Jul. 31, 2012
Filed:
Jun. 24, 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 controller estimates Coulomb friction itself together with inertia and viscous friction, and reduces the influence of the Coulomb friction on the accuracy of the estimated inertia. In addition, the controller estimates inertia, viscous friction and Coulomb friction simultaneously with sequential adaptation in which a Fourier transformer is not used but an inverse transfer function model is used in order to minimize the estimated error. Data sampled for a predetermined time need not be accumulated, as a result, a large amount of data memory is unnecessary.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile