This paper mainly discusses the fuzzy control application for gun control system of tank

which contains nonlinearity and uncertainty

and introduces an AC servo system which consists of current loop and speed loop.In the system's design

general PI adjuster was adopted as current controller

and fuzzy adaptive PID adjuster was adopted as speed controller.Compared with general control strategy

simulation results show that the design scheme has favorable static and dynamic steady performance.And it demonstrates the correct and reasonable of the design way.