PROBLEM TO BE SOLVED: To provide a motor control device that is able to continue driving control for en electric motor even if an abnormal state arises in output from the resolver of a motor.SOLUTION: A motor control device comprises: a steering torque detection part that detects steering torque by detecting input/output side rotation angle of a torsion bar inserted into a steering system; a motor rotation angle detection part including a resolver for detecting motor rotation angle of a multi-phase electric motor; a motor angle abnormality detection part that detects abnormality in the motor rotation angle detection part; a motor rotation angle estimation part that estimates motor rotation angle resulting from reverse electromotive voltage on the basis of motor current detection value and motor voltage detection value of the multi-phase electric motor, and on the basis of the output-side rotation angle of the torsion bar of the steering torque detection part; and a motor rotation angle selection part that, when abnormality in the motor rotation angle detection part is detected by a rotation angle detection part abnormality detecting part, selects a motor rotation angle estimated value of the motor rotation angle estimation part instead of a motor rotation angle detection value of the motor rotation angle detection part.SELECTED DRAWING: Figure 8
【課題】モータのレゾルバの出力に異常が生じた場合でも電動モータの駆動制御を継続することが可能なモータ制御装置、これを使用した電動パワーステアリング装置および車両を提供する。【解決手段】操舵系に介挿されたトーションバーの入出力側の回転角を検出して操舵トルクを検出する操舵トルク検出部と、多相電動モータのモータ回転角を検出するレゾルバを含むモータ回転角検出部と、モータ回転角検出部の異常を検出するモータ角度異常検出部と、多相電動モータのモータ電流検出値およびモータ電圧検出値および操舵トルク検出部のトーションバーの出力側回転角に基づいて逆起電圧によるモータ回転角を推定するモータ回転角推定部と、回転角検出部異常検出部でモータ回転角検出部の異常を検出したときに、当該モータ回転角検出部のモータ回転角検出値に代えてモータ回転角推定部のモータ回転角推定値を選択するモータ回転角選択部とを備える。【選択図】図8
MOTOR CONTROL DEVICE, ELECTRIC POWER STEERING DEVICE USING THE SAME, AND VEHICLE
モータ制御装置、これを使用した電動パワーステアリング装置および車両
2016-05-26
Patent
Electronic Resource
Japanese
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