PROBLEM TO BE SOLVED: To provide a motor control device that can estimate an electric angle of a motor with high accuracy, an electric power steering device and a vehicle.SOLUTION: The motor control device comprises a motor electric angle calculation part that calculates an electric angle of a motor. The motor is a sinusoidal wave-driven three-phase motor, where each phase of three phases comprises a plurality of coils to be supplied. The plurality of coils are connected by star wire connections. The motor electric angle calculation part calculates an estimated value of the electric angle of the motor on the basis of an output shaft rotation angle, a rotation angle of an output shaft to be connected to the motor through a deceleration device. The motor electric angle calculation part calculates an induction voltage of the motor on the basis of a current value of the motor, a voltage value of the motor and an electric angle change rate, which is a change amount per unit time of the electric angle of the motor, and corrects the estimated value of the motor electric angle on the basis of the induction voltage.SELECTED DRAWING: Figure 11
【課題】モータ電気角を高い精度で推定することができるモータ制御装置、電動パワーステアリング装置及び車両を提供すること。【解決手段】モータ制御装置は、モータの電気角を演算するモータ電気角演算部を備える。モータは、正弦波駆動の三相交流モータであり、三相の各相が供給される複数のコイルを備える。複数のコイルは、スター結線で接続される。モータ電気角演算部は、モータに減速装置を介して接続される出力軸の回転角である出力軸回転角に基づいてモータ電気角推定値を演算する。モータ電気角演算部は、モータの電流値と、モータの電圧値と、モータの電気角の単位時間当たりの変化量である電気角変化率と、に基づいてモータの誘起電圧を演算し、誘起電圧に基づいてモータ電気角推定値を補正する。【選択図】図11
MOTOR CONTROL DEVICE, ELECTRIC POWER STEERING DEVICE AND VEHICLE
モータ制御装置、電動パワーステアリング装置及び車両
2018-07-19
Patent
Electronic Resource
Japanese
MOTOR CONTROL DEVICE, ELECTRIC POWER STEERING DEVICE, AND VEHICLE
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