PROBLEM TO BE SOLVED: To provide an electrically-driven power steering device in which sounds, vibration and ripples are suppressed.SOLUTION: An electrically-driven power steering device includes a median point voltage estimation section 210, a three-phase detection voltage calculation section 201, a three-phase command voltage calculation section 220, a voltage detection delay model 230, a three-phase loss voltage calculation section 202, a compensation amount limit section 250, and a three-phase AC/dq-axis conversion section 260. The median point voltage estimation section comprises a half reduction section for reducing the inverter application voltage to half and outputting a half reduction value, a voltage calculation section for adding the three-phase motor terminal voltage and then multiplying by 1/3 to output voltage 1, a correction timing determination section outputting a correction signal based on the motor rotation angle and the number of revolutions of the motor, a correction value holding section for outputting voltage 2 based on the deviation voltage of the half reduction value and the voltage 1, and a correction signal, a correction amount limit section outputting a voltage correction value by limiting the voltage 2, and a subtraction section for subtracting the voltage correction value from the half reduction value and outputting the median point voltage estimate, feeds back a dq-axis dead time compensation value by adding to the dq-axis voltage command value.SELECTED DRAWING: Figure 5

    【課題】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】中点電圧推定部210と、3相検出電圧算出部201と、3相指令電圧演算部220と、電圧検出遅れモデル230と、3相損失電圧演算部202と、補償量制限部250と、3相交流/dq軸変換部260とを具備し、中点電圧推定部は、インバータ印加電圧を半減して半減値を出力する半減部と、3相モータ端子電圧を加算して後に1/3倍して電圧1を出力する電圧算出部と、モータ回転角及びモータ回転数に基づいて補正信号を出力する補正タイミング判定部と、半減値及び電圧1の偏差電圧と、補正信号とに基づいて電圧2を出力する補正値保持部と、電圧2を制限して電圧補正値を出力する補正量制限部と、半減値より電圧補正値を減算して中点電圧推定値を出力する減算部とで構成されており、dq軸デッドタイム補償値をdq軸電圧指令値に加算してフィードバックする。【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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