| 摘要 |
The purpose of the present invention is to provide a periodic disturbance automatic suppression device which suppresses torque ripple while correcting current sensor error. This periodic disturbance automatic suppression device is provided with a current error correction control-system periodic disturbance observer, a torque ripple suppression-system periodic disturbance observer and a plant model unit. A voltage command value is inputted into the plant model unit to generate a virtual current value, the virtual current value is inputted via a coordinate conversion unit into the current error correction control-system periodic disturbance observer to calculate a compensation value, the compensation value is superimposed on the current detection value to correct the current detection value from the current sensor, the rotational speed and output torque of the plant are inputted into the torque ripple suppression-system periodic disturbance observer to calculate a compensation value, and the calculated compensation value is added via the coordinate conversion unit to the current command value. |
