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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.:

US 9780708 B1

PDFFull Text
Expired
Date of Patent:
Oct. 03, 2017

Filed:

May. 13, 2016

Control device and method for stepper motor that ensure improved performance of stepper motor during activation period

Applicant:

Kyocera Document Solutions Inc., Osaka, JP;

Inventor:

Hirotaka Ishida, Osaka, JP;

Assignee:

KYOCERA Document Solutions Inc., Osaka, JP;

Attorney:

Stein IP, LLC

Primary Examiner:

Bentsu Ro

Assistant Examiner:

Zemenay Truneh

Int. Cl.
CPC ...
H02P 8/00 (2006.01); G05B 13/00 (2006.01); H02P 8/04 (2006.01); H02P 8/18 (2006.01); H02P 8/22 (2006.01); H02P 29/50 (2016.01);
U.S. Cl.
CPC ...
H02P 8/04 (2013.01); H02P 8/18 (2013.01); H02P 8/22 (2013.01); H02P 29/50 (2016.02);
Abstract

A control device for a stepper motor drives in a 1-2-phase excitation method in response to an input of a drive signal. The control device includes a control signal generating unit and a drive signal generating unit. The control signal generating unit generates a pulsed control signal. The drive signal generating unit generates the drive signal for rotating by a predetermined step angle every time the control signal is input. The predetermined step angle is a half of a step angle of a 2-phase excitation method. The control signal generating unit configures a higher pulse rate of a first to an n-th (n is an integer equal to or more than 2 and equal to or less than 3) control signals in an activation period of the stepper motor than a pulse rate of the control signals following the n-th control signal.

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Ishida, Hirotaka. (2017). Control device and method for stepper motor that ensure improved performance of stepper motor during activation period (U.S. Patent No. 9780708). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9780708

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