A: First check proportional, then integral, and finally add differential
The curve oscillates frequently, and the scale dial should be enlarged
The curve floats around the big bay, and the scale dial pulls to the small
The curve deviates and recovers slowly, and the integration time decreases
The curve has a long fluctuation period and the integration time is longer
The oscillation frequency of the curve is fast. First reduce the differential
It fluctuates slowly when the dynamic difference is large, the differential time should be longer.