| 摘要 |
PURPOSE:To adjust a control loop gain automatically by detecting the pulsation part of a torque feedback value, and increasing or decreasing the loop gain of at least either of a torque control system and a speed control system according to the frequency of the pulsation part. CONSTITUTION:A testing device is provided with a gain adjusting circuit 28 and a multiplier 29. Then, the gain adjusting circuit 28 inputs the torque feedback value VFT and a torque set value VPT and the multiplier 29 perform multiplication by a gain command GX and outputs the result to a subtracter 23. Thus, the pulsation part of the torque feedback value is detected and the loop gain of at least either of the torque control system and speed control system is increased or decreased according to the frequency of the pulsation part to adjust the loop gain automatically. |
