PROBLEM TO BE SOLVED: To provide a motor controller that compensates for a counter electromotive voltage and characteristics of a counter electromotive voltage compensation path through a feedback path without any variation in sensitivity to noise nor any delay over a wide range so as to securely let a real current follow up a current command value, and to provide an electric power steering device which improves a steering feeling.SOLUTION: A motor controller which performs driving control over a motor through current feedback control based upon a current command value and also performs compensation for a motor counter electromotive voltage with a counter electromotive voltage compensation signal based upon a motor angle or motor angular velocity is characterized in that a path for compensating for a motor counter electromotive voltage is provided with an LPF for noise elimination, and a feedback path of motor control is provided with an angle feedback filter which cancels a counter electromotive voltage compensation difference as a difference between the motor counter electromotive voltage and counter electromotive voltage compensation signal.SELECTED DRAWING: Figure 8
【課題】ノイズに対する感度を変化させずに、広範囲にわたって遅れなく、逆起電圧及び逆起電圧補償経路の特性をフィードバック経路で補償し、実電流を電流指令値に確実に追従させるモータ制御装置を提供すると共に、操舵フィーリングを向上した電動パワーステアリング装置を提供する。【解決手段】電流指令値に基づく電流フィードバック制御でモータを駆動制御すると共に、モータ角度若しくはモータ角速度に基づく逆起電圧補償信号によりモータ逆起電圧の補償を行うモータ制御装置において、モータ逆起電圧を補償する経路にノイズ除去用のLPFが設けられると共に、モータ制御のフィードバック経路に、モータ逆起電圧と逆起電圧補償信号との差である逆起電圧補償誤差を相殺する角度フィードバックフィルタが設けられている。【選択図】図8
MOTOR CONTROLLER AND ELECTRIC POWER STEERING DEVICE MOUNTED THEREWITH
モータ制御装置及びそれを搭載した電動パワーステアリング装置
2017-09-07
Patent
Electronic Resource
Japanese
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