PROBLEM TO BE SOLVED: To provide an electrically-driven power steering device in which distortion of current waveform is improved and response of current control is improved, while suppressing sounds and vibrations, and ripples.SOLUTION: In an electrically-driven power steering device of vector control system for converting a calculated dq-axis current command value into a three-phase Duty command value, performing drive control of a three-phase brushless motor by a PWM control inverter, and giving an assist torque to the steering mechanism of a vehicle, a compensation code of a three-phase current command value converting the dq-axis current command value into the three-phase current command value is estimated, a dead time compensation amount is calculated based on the inverter application voltage, a dq-axis voltage command value is obtained by adding a dead time compensation value obtained by multiplying the dead time compensation amount by the compensation mark thereby converting into two-phase, a three-phase Duty command value is obtained by performing vector space modulation for converting the added dq-axis voltage command value into three-phase, thus performing dead time compensation of the inverter.SELECTED DRAWING: Figure 5

    【課題】電流波形の歪み改善と電流制御の応答性の向上を図り、音や振動、リップルを抑制した電動パワーステアリング装置を提供する。【解決手段】演算されたdq軸電流指令値を3相Duty指令値に変換し、PWM制御のインバータにより3相ブラシレスモータを駆動制御し、車両の操舵機構にアシストトルクを付与するベクトル制御方式の電動パワーステアリング装置において、dq軸電流指令値を3相電流指令値モデルに変換した3相電流モデル指令値の補償符号を推定すると共に、インバータ印加電圧に基づいてデッドタイム補償量を演算し、デッドタイム補償量に補償符号を乗じて2相に変換したデッドタイム補償値をdq軸電圧指令値に加算して、dq軸電圧指令値を求め、加算dq軸電圧指令値を3相に変換して3次高調波を重畳するベクトル空間変調を行って3相Duty指令値とし、インバータのデッドタイム補償を行う。【選択図】図5


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    Titel :

    ELECTRICALLY-DRIVEN POWER STEERING DEVICE


    Weitere Titelangaben:

    電動パワーステアリング装置


    Beteiligte:
    TAKASE HIROAKI (Autor:in) / MINAKI AKIRA (Autor:in) / SAWADA HIDEKI (Autor:in) / SUGAWARA TAKAYOSHI (Autor:in)

    Erscheinungsdatum :

    2018-09-27


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B62D MOTOR VEHICLES , Motorfahrzeuge



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