Abstract: Based on the varying trend of the on-line identification controlled object’s output state, a new approach to compelling stable control strategy is presented. It can eliminate the oscillations of the conventional fuzzy logic controller, whichoften occurwhen the systemparameters change. In addition, some concepts, such as the shape function vector of a curve and the monotonic smooth transition system, are proposed. The dynamic performance of the new controller is discussed theoretically using these new concepts.