MOTOR CONTROL DEVICE

To provide a motor control device capable of calculating a rotation amount at startup with high accuracy.SOLUTION: A motor control device 11 includes a control unit 21 that controls a DC motor M and calculates the amount of rotation of the DC motor M on the basis of the number of peaks of the detected current waveform. The control unit 21 includes a prediction cycle calculation unit 23 that calculates a rotation speed at startup on the basis of the current waveform at startup, and calculates a predicted cycle of the peak of the current waveform on the basis of the calculated rotation speed, a peak missing detection unit 24 that detects a missing peak in the detected current waveform on the basis of the prediction cycle calculated by the prediction cycle calculation unit 23, and a rotation amount calculation unit 25 that calculates the amount of rotation of the DC motor M by correcting the number of peaks in the detected current waveform according to the missing peak detected by the peak missing detection unit 24.SELECTED DRAWING: Figure 1 【課題】起動時の回転量を高精度に算出可能としたモータ制御装置を提供すること。【解決手段】モータ制御装置１１は、直流モータＭを制御するとともに、検出した電流波形のピークの数に基づいて直流モータＭの回転量を算出する制御部２１を備える。制御部２１は、起動時の電流波形に基づいて起動時の回転速度を算出し、算出した回転速度に基づいて電流波形のピークの予測周期を算出する予測周期算出部２３と、予測周期算出部２３にて算出した予測周期に基づいて、検出した電流波形のピークの抜けを検出するピーク抜け検出部２４と、ピーク抜け検出部２４にて検出したピークの抜けに応じて、検出した電流波形のピークの数を補正して直流モータＭの回転量を算出する回転量算出部２５とを備える。【選択図】図１