The Design of Fuzzy Control System for Aircraft Automatic Landing
LI Ai-jun1, SHEN yi2, ZHANG Wei-guo1 (1. Dept. of Automatic Control, Northwest polytechnical University, [(Xi)0(\222)]an 710072, China) 2. Dept. of Aircraft Engineering, Northwest polytechnical University, [(Xi)0(\222)]an 710072, China)
The control system for longitudinal automatic landing of an aircraft was designed with the methods of feedback linearization and improved fuzzy control. The nonlinear equation of aircraft is linearized by state transforming differential relationship between input and a new input, and the nonlinear system is decoupled to a one order linear system and a two order linear system. Simultaneously, because of using without quantification fuzzy controller with optimal corrective function, the system can automatically search ideal control rules on the base of rough initialized rules. Gliding and leveling are considered in longitudinal landing simulation study. Simulation results show that the control system can satisfy the requirement of longitudinal automatic landing of an aircraft, and has excellent dynamic, static and robustness performances.
【CateGory Index】： V249.122