Servo Tuning
Tuning servo is a basic skill in automation and machine building. There is tuning by ears and eyes (who know how good this is). There is also tuning by performance factor. The fundamental key is the good understanding of PID control. P is proportional gain, adding. I is integration gain, reducing. D is derivative gain, anticipating. For servo tuning, the following error and derived charts are key for good visual understanding of the system performance.