| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress the vibration of a motor due to output current noise when a current command value is zero (the motor is stopped). <P>SOLUTION: A motor control device receives inputs of a current value flowing through a motor, an electric angle of the motor, and a current command value; calculates a voltage command value by performing feedback control using the current command value, the current value, and the electric angle; and generates a motor control signal that controls an inverter converting the voltage command value into a PWM waveform and driving the motor. The motor control device includes a zero-command detection unit 61 detecting whether or not the current command value is zero, and sets the resolution with respect to the voltage command value in a PWM conversion unit 18', in which the voltage command value is inputted and that controls the motor control signal, to be coarse when the zero-command detection unit 61 detects zero. <P>COPYRIGHT: (C)2013,JPO&INPIT |
