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:
Nov. 29, 2011
Filed:
Sep. 19, 2007
Katsuhiro Sasaki, Niigata, JP;
Yuji Oguro, Niigata, JP;
Katsuhiro Sasaki, Niigata, JP;
Yuji Oguro, Niigata, JP;
Nippon Seiki Co., Ltd., Niigata, JP;
Abstract
A drive control device and a drive control method for a stepping motor are provided to reduce the number of parts and generation of vibration and noise by a stepping motor. The drive control device controls a drive frequency of the stepping motor according to a measurement value inputted. The drive control device includes storage means for storing the resonance frequency of the stepping motor based on its resonance characteristic as an output-inhibited drive frequency and control means for calculating an instruction angle for operating a needle according to the measurement value, acquiring a first drive frequency of the stepping motor, judging whether the first drive frequency is the output-inhibited drive frequency, and deciding the drive frequency by replacing the first drive frequency with the second drive frequency which is lower than the output-inhibited drive frequency if the first drive frequency is the output-inhibited drive frequency.