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:
Oct. 15, 2013
Filed:
May. 25, 2011
Munetaka Wakizaka, Iga, JP;
Hideaki Hiramitsu, Kasugai, JP;
Munetaka Wakizaka, Iga, JP;
Hideaki Hiramitsu, Kasugai, JP;
Mori Seiki Co., Ltd., Yamatokoriyama-Shi, JP;
Mitsubushi Electric Corporation, Tokyo, JP;
Abstract
In a rotation angle positioning deviceincluding: a rotation angle detection devicewhich has a detection target ringand an angle detection sensor; and a rotating-shaft driving devicerotating a rotating shaft so as to cause a rotation angle to become a given command value α for rotation angle, there are provided: an error pattern storage unitstoring a tooth-to-tooth period error pattern F made up of errors between detected rotation angles by the angle detection sensorand actual rotation angles, corresponding to respective correction dividing points of an arbitrary tooth-to-tooth period in the detection target ring; and a command value correction unitcorrecting the command value α for rotation angle based on the tooth-to-tooth period error pattern F to find a corrected command value αfor rotation angle.