Good stability, the stability is refers to the system in the role of a given input or interference, can only after a short section tuning process to new or restored to the original state of equilibrium
The precision of high precision servo system s refers to the amount of output can follow the input is accurate. Good quick responsiveness: quick responsiveness is one of the symbols of servo system dynamic quality, which requires command signal tracking faster response speed, on the one hand require short transient time, generally within 200 ms, even less than a few fine long hair; On the other hand, in order to satisfy the overshoot demands, at the forefront of steep transition process, even if the big rise rate.