Robust H_∞ directional control for a sampled-data autonomous airship  

作　　者：王曰英 王全保 周平方 段登平 

机构地区：[1]School of Aeronautics and Astronautics, Shanghai Jiao Tong University

出　　处：《Journal of Central South University》2014年第4期1339-1346,共8页中南大学学报（英文版）

基　　金：Projects(51205253,11272205)supported by the National Natural Science Foundation of China;Project(2012AA7052005)supported by the National High Technology Research and Development Program of China

摘　　要：A robust H∞ directional controller for a sampled-data autonomous airship with polytopic parameter uncertainties was proposed. By input delay approach, the linearized airship model was transformed into a continuous-time system with time-varying delay. Sufficient conditions were then established based on the constructed Lyapunov-Krasovskii functional, which guarantee that the system is mean-square exponentially stable with H∞ performance. The desired controller can be obtained by solving the obtained conditions. Simulation results show that guaranteed minimum H∞ performance γ=1.4037 and fast response of attitude for sampled-data autonomous airship are achieved in spite of the existence of parameter uncertainties.A robust H∞ directional controller for a sampled-data autonomous airship with polytopic parameter uncertainties was proposed. By input delay approach, the linearized airship model was transformed into a continuous-time system with time-varying delay. Sufficient conditions were then established based on the constructed Lyapunov-Krasovskii functional, which guarantee that the system is mean-square exponentially stable with H∞ performance. The desired controller can be obtained by solving the obtained conditions. Simulation results show that guaranteed minimum H∞ performance γ=1.4037 and fast response of attitude for sampled-data autonomous airship are achieved in spite of the existence of parameter uncertainties.

关 键 词：autonomous airship H∞ directional control sampled-data system polytopic parameter uncertainty Lyapunov-Krasovskii functional 

分 类 号：V274[航空宇航科学与技术—飞行器设计]