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Title:
MOTOR DRIVE CONTROL DEVICE AND MOTOR DRIVE CONTROL METHOD
Document Type and Number:
Japanese Patent JP2016174479
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress strange sound and torque ripples generated when a drive frequency of a stepping motor is periodically modulated.SOLUTION: A motor drive control device 100 comprises: a bridge control circuit 110 that controls AC current flowing in a stepping motor 120; a frequency modulation table 106 for frequency-modulating a speed of the stepping motor 120 when the stepping motor 120 is driven at a predetermined speed; and a current gain table 105 for performing control to reduce an effective value of the AC current flowing in the stepping motor 120 as the speed of the stepping motor 120 approaches a resonance frequency of the stepping motor 120 by the frequency modulation.SELECTED DRAWING: Figure 2

Inventors:
MIYAJI SHIGEKI
MATSUI TAKAYUKI
SEKI TETSUYA
Application Number:
JP2015053468A
Publication Date:
September 29, 2016
Filing Date:
March 17, 2015
Export Citation:
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Assignee:
MINEBEA CO LTD
International Classes:
H02P8/12
Domestic Patent References:
JP2011239518A2011-11-24
JPH06245590A1994-09-02
JPH01218391A1989-08-31
JP2011239518A2011-11-24
JPH06245590A1994-09-02
JPH01218391A1989-08-31
JP2004129399A2004-04-22
JPS63107498A1988-05-12
JP2004129399A2004-04-22
JPS63107498A1988-05-12
Foreign References:
WO2012117436A12012-09-07
Attorney, Agent or Firm:
Isono International Patent and Trademark Office