PROBLEM TO BE SOLVED: To provide a motor controller capable of suppressing motor current fluctuation caused by a change in a motor rotation state, and an electrically-driven power steering device employing the same.SOLUTION: A q-axis feedback control part 62 calculates a voltage command value Vqon the basis of a current command value Iqand a current detection value Iq. A fundamental correction voltage calculation part 56 calculates a fundamental voltage correction value Va corresponding to a rotation angular acceleration ωdot that is calculated based on a detection value of a rotation angle detection part 45. An implementation judging part 57 discriminates whether to implement voltage correction processing for correcting the voltage command value Vq, and outputs a voltage correction value Vacorresponding to the fundamental voltage correction value Va. Based on the voltage correction value Va, a voltage correction part 63 corrects the voltage command value Vq. A previous correction voltage output part 58 feeds a previous voltage correction value Va(n-1) that is a previous value of the voltage correction value Va, back to the q-axis feedback control part 62. Thus, current fluctuation of a motor 80 can be appropriately suppressed.SELECTED DRAWING: Figure 3

    【課題】モータ回転状態の変化によるモータ電流の変動を抑制可能なモータ制御装置、および、これを用いた電動パワーステアリング装置を提供する。【解決手段】q軸フィードバック制御部62は、電流指令値Iq*と電流検出値Iqとに基づいて、電圧指令値Vq*を演算する。基本補正電圧演算部56は、回転角検出部45の検出値に基づいて演算される回転角加速度ωdotに応じた基本電圧補正値Vaを演算する。実施判断部57は、電圧指令値Vq*を補正する電圧補正処理を行うか否かを判定し、基本電圧補正値Vaに応じた電圧補正値Va*を出力する。電圧補正部63は、電圧補正値Va*に基づき、電圧指令値Vq*を補正する。前回補正電圧出力部58は、電圧補正値Va*の前回値である前回電圧補正値Va*(n−1)を、q軸フィードバック制御部62にフィードバックする。これにより、モータ80の電流変動を適切に抑制することができる。【選択図】 図3


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    Title :

    MOTOR CONTROLLER, AND ELECTRICALLY-DRIVEN POWER STEERING DEVICE EMPLOYING THE SAME


    Additional title:

    モータ制御装置、および、これを用いた電動パワーステアリング装置


    Contributors:

    Publication date :

    2018-06-21


    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 / B62D MOTOR VEHICLES , Motorfahrzeuge



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