MOTOR CONTROL DEVICE

To detect a rotational direction of a brushless motor with a simple configuration even in the case of a single Hall signal.SOLUTION: According to an embodiment, a motor control device controls a brushless motor having a rotor with a magnet, and a stator with coils of multiple phases wound thereon. A...

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Bibliographic Details
Main Author MATSUDA MASATOSHI
Format Patent
LanguageEnglish
Japanese
Published 26.03.2020
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
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Summary:To detect a rotational direction of a brushless motor with a simple configuration even in the case of a single Hall signal.SOLUTION: According to an embodiment, a motor control device controls a brushless motor having a rotor with a magnet, and a stator with coils of multiple phases wound thereon. A rotational direction detecting unit detects a rotational direction of the brushless motor on the basis of a Hall signal detected by a Hall signal detecting unit and a phase current detected by a phase current detecting unit at a timing when at least one transistor is being set to a conductive state.SELECTED DRAWING: Figure 6 【課題】ホール信号が１つの場合でもブラシレスモータの回転方向を簡素な構成で検知する。【解決手段】一つの実施形態によれば、磁石を有するロータと複数相のコイルが巻装されたステータとを備えるブラシレスモータを制御するモータ制御装置において、回転方向検知部は、少なくとも１つのトランジスタが通電可能状態に設定されているタイミングにおける、ホール信号検出部により検出されるホール信号と、相電流検出部によって検出される相電流と、に基いて、ブラシレスモータの回転方向を検知する。【選択図】図６
Bibliography:Application Number: JP20180174250