PROBLEM TO BE SOLVED: To provide a brushless motor capable of suppressing torque ripple in a rotor.SOLUTION: A brushless motor 18 for rotating a rotor 27 by supplying a current to coils U1, U2, V1, V2, W1, W2 includes a drive circuit 37 for switching and executing first energization control for starting energization to the coils U1, U2, V1, V2, W1, W2 at first timing and continuing the energization over a first period to control a rotational frequency of the rotor 27 and second energization control for starting energization to the coils U1, U2, V1, V2, W1, W2 at second timing advanced from the first timing by an electric angle and continuing the energization over a second period longer than the first period to control the rotational frequency of the rotor 27.

    【課題】回転子におけるトルクリップルを抑制することのできるブラシレスモータを提供する。【解決手段】コイルU1,U2,V1,V2,W1,W2に電流が供給されて回転子27が回転するブラシレスモータ18であって、コイルU1,U2,V1,V2,W1,W2に第1のタイミングで通電を開始し、かつ、第1の期間に亘って通電を継続して回転子27の回転数を制御する第1の通電制御と、第1のタイミングよりも電気角で進角された第2のタイミングでコイルU1,U2,V1,V2,W1,W2に通電を開始し、かつ、第1の期間よりも長い第2の期間に亘って通電を継続して回転子27の回転数を制御する第2の通電制御と、を切り替えて実行する駆動回路37を備えている。【選択図】図7


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    Title :

    BRUSHLESS MOTOR AND WIPER DEVICE


    Additional title:

    ブラシレスモータ及びワイパ装置


    Contributors:

    Publication date :

    2015-07-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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