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Patent Searching and Data


Title:
DC MOTOR CONTROL UNIT, AND CONTROL METHOD FOR DC MOTOR
Document Type and Number:
Japanese Patent JP2008187838
Kind Code:
A
Abstract:

To provide a DC motor control unit capable of facilitating control of the maximum torque generated by a DC motor without performing a complex operation.

This DC motor control unit includes: the DC motor for driving a roller; a motor driver for driving the DC motor; an encoder for outputting speed information according to rotation of the roller; and a control means for performing feedback control based on the speed information output from the encoder to output a control signal having a PWM waveform to the motor driver. The control means changes the duty value of the PWM waveform based on the speed information output from the encoder and a threshold value.


Inventors:
SONODA SHINYA
KAKISHIMA HIROYUKI
Application Number:
JP2007020152A
Publication Date:
August 14, 2008
Filing Date:
January 30, 2007
Export Citation:
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Assignee:
CANON KK
International Classes:
H02P7/06
Attorney, Agent or Firm:
Shinichi Kawakubo