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:
Dec. 06, 2016
Filed:
Jan. 11, 2013
Shimadzu Corporation, Kyoto-shi, Kyoto, JP;
Kazumi Yokota, Mishima-gun, JP;
SHIMADZU CORPORATION, Kyoto-Shi, Kyoto, JP;
Abstract
A rotary drive mechanism provides a mechanism for driving light dispersing element having a high wavelength-moving speed and a high wavelength-resolving power. The rotary drive mechanism includes a stepper motor as a rotary drive source; an update information setter for setting update information corresponding to the amount of change by which the motor should be rotated at a drive timing indicated by an input signal; a position information updater for holding position information which specifies the rotational position of the motor and for updating the position information based on the update information from the update information setter; a winding excitation state determiner for determining the amount or ratio of electric currents passed through the windings of the motor based on the updated position information provided from the position information updater; and a drive controller for controlling the electric currents based on a control signal from the winding excitation state determiner.