Stability condition of the proportional control algorithm is given for a fixed target. 針對固定目標，文中給出了比例控制算法的穩定性條件。
The sliding mode control is used to eliminate the uncertainties.Its performance is compared with propotional control to verify the effectivenss of sliding mode control. 然后藉由滑動(dòng)模式控制器來(lái)解決氣壓伺服系統中不穩定因素造成的控制問(wèn)題，并對照比例控制的結果，驗證滑動(dòng)模式控制器對于氣壓伺服系統的實(shí)用性。
