MOTOR DRIVING CONTROL DEVICE AND MOTOR DRIVING CONTROL METHOD

To reduce load of calculations in driving control of a motor.SOLUTION: In a motor driving control device 10, a drive circuit 2 includes: an inverter circuit 2a that drives a coil of a motor 3 on the basis of a driving control signal Sd; and a current detection circuit 2c that detects a driving current in the coil of the motor 3 and outputs a current detection signal Vm in accordance with the detected driving current. A control circuit 1 includes: a driving command acquisition unit 11 that acquires a driving command signal Sc containing a value indicating a target state of operation of the motor 3; a q-axis current value calculation unit 12 that calculates a q-axis current value where a d-axis current value of a two-phase rotation coordination system is zero, on the basis of an envelope curve of an absolute value of the driving current detected on the basis of the current detection signal Vm; and a calculation unit 13 that generates the driving control signal Sd by performing a vector control calculation using the q-axis current value, the driving command signal, a rotational speed of the motor 3, and a rotational angle.SELECTED DRAWING: Figure 2 【課題】モータの駆動制御における演算の負荷を低減する。【解決手段】モータ駆動制御装置１０において、駆動回路２は、駆動制御信号Ｓｄに基づいてモータ３のコイルを駆動するインバータ回路２ａと、モータ３のコイルの駆動電流を検出し、検出した駆動電流に応じた電流検出信号Ｖｍを出力する電流検出回路２ｃと、を含み、制御回路１は、モータ３の動作の目標状態を指示する値を含む駆動指令信号Ｓｃを取得する駆動指令取得部１１と、電流検出信号Ｖｍに基づいて検出した前記駆動電流の絶対値の包絡線に基づいて、２相の回転座標系のｄ軸電流値をゼロとしたときのｑ軸電流値を算出するｑ軸電流値算出部１２と、ｑ軸電流値と、駆動指令信号と、モータ３の回転速度と、回転角度とを用いてベクトル制御演算を行うことにより、駆動制御信号Ｓｄを生成する演算部１３と、を含む。【選択図】図２