| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor control device capable of more accurately calculating an offset amount of a current value detected by a current sensor even in the case where a detected current waveform is deviated from a sinusoidal wave by noise or distortion.SOLUTION: In a motor control device, two current values in output of a three-phase inverter 5 are measured by current sensors 13 and 14, respectively, and the two measured current values are inputted to three-phase/dq conversion means 6 and converted into d-axis and q-axis currents, thereby controlling a three-phase AC motor 11. The device comprises: offset amount calculation means 7 and 8 for inputting a d-axis current value and a d-axis current command value or inputting a q-axis current value and a q-axis current command value and outputting an offset amount of the current sensors; and correction means 9 and 10 for inputting the offset amount outputted from the means 7 and 8 and correcting output so as to remove the offset amount from the output of the current sensors 13 and 14. |
