PROBLEM TO BE SOLVED: To reduce costs by reducing the number of components and improve reliability.SOLUTION: An electronic control unit 10 for an electric power steering formed integrally with an electric motor 11 comprises two systems of magnetic detection elements. A control part 120a generates rotational angle information of the electric motor 11 from a first rotational angle signal (sinθx, cosθx) output from a magnetic detection element 121 and a second rotational angle signal (sinθy, cosinθy) output from a dedicated magnetic detection element 122 when an ignition switch 20 is not operated, and calculates a steering position from the generated rotational angle information.

    【課題】部品点数削減によりコストダウンをはかるとともに、信頼性の向上をはかる。【解決手段】電動モータ11と一体形成された電動パワーステアリング用電子制御ユニット10において、磁気検出素子を2系統備え、制御部120aが、磁気検出素子121から出力される第1の回転角信号(sinθx,cosθx)と、イグニッションスイッチ20が動作していないときに専用磁気検出素子122から出力される第2の回転角信号(sinθy,cosinθy)とから電動モータ11の回転角情報を生成し、生成した回転角情報からステアリングの位置を算出する。【選択図】図4


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    Title :

    ELECTRONIC CONTROL UNIT FOR ELECTRIC POWER STEERING


    Additional title:

    電動パワーステアリング用電子制御ユニット


    Contributors:

    Publication date :

    2015-06-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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