The papers[1-5] discussed the basic principle and the realizing method of a simple fuzzy controller. The paper[6]considered the contradiction between the dynamic and stable performances of the simple fuzzy controller

but it utilized the linear switch to overcome this contradiction

without full play to the fuzzy controller’s functions.After discussing the effect of the change of fuzzy sets on system performances in a simple fuzzy controller

this paper presents a new fuzzy control algorithm with variable fuzzy sets to overcome the contradiction as mentioned above

which can greatly improve the response performances of sytems from software simulations. Based on the algorithm

this paper presents further new fuzzy control algorithms with self-optimizing fuzzy sets. It is shown that these algorithms are very applicable from simulations. After self-optimizing fuzzy sets

the response performances of fuzzy control systems are very satisfactory.