CONTROLLER, DRIVE UNIT, AND IMAGE FORMING APPARATUS

To perform position hold control without providing a detector on an output shaft of a brushless DC motor or an object to be driven.SOLUTION: A driver circuit 220 comprises: a motor drive circuit 221 that supplies power to a motor 210 while switching its polarity according a magnetic pole phase signa...

Full description

Saved in:
Bibliographic Details
Main Author MURATA TAKUYA
Format Patent
LanguageEnglish
Japanese
Published 12.09.2019
Subjects
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
Online AccessGet full text

Cover

More Information
Summary:To perform position hold control without providing a detector on an output shaft of a brushless DC motor or an object to be driven.SOLUTION: A driver circuit 220 comprises: a motor drive circuit 221 that supplies power to a motor 210 while switching its polarity according a magnetic pole phase signal output from the motor 210; and a rotation position detection circuit 222 that converts the magnetic pole phase signal and outputs a rotation position detection signal representing an amount of rotation and a direction of rotation of an output shaft of the motor 210 and having a higher resolution than that of the magnetic pole phase signal.SELECTED DRAWING: Figure 4 【課題】ブラシレスＤＣモータの出力軸または被駆動体に検出装置を備えることなく、位置・ホールド制御をすること。【解決手段】ドライバ回路２２０は、モータ２１０から出力される磁極位相信号に応じて極性を切換えてモータ２１０に電力を供給するモータ駆動回路２２１と、磁極位相信号を変換して、モータ２１０の出力軸の回転量及び回転方向を表し、当該磁極位相信号に対して分解能の高い回転位置検出信号を出力する回転位置検出回路２２２と、を備える。【選択図】図４
Bibliography:Application Number: JP20190116779