Abstract: The design of an intelligence automatic flight control system is discussed. The basic structure of the system, the basic rule of intelligence control for simulating human behavior, the division of characteristic model and the construction of intelligence control laws are suggested. Based on the principles mentioned above, the knowledge base, the data base, the rule base and inference mechanism of the system are designed. In the meanwhile, it is demonstrated by digital simulation for some kind of aircraft that this system has excellent control performance, strong robustness and adaptability, and good decoupling function.

Key words: adaptability, intelligent control, expert system, flight control.