Microsoft Word - 70_PE_07b_12_257-260_sun

This paper presents a robust control scheme for nonlinear TCP time-delay dynamic network systems. By introducing the interference and time-delay to improve the nonlinear model, the objective of the work described here was to express various interference and time-delay factors in the actual network running environment. Using proper coordinate transformation, evaluation signal and energy storage function, the robust controller was guaranteed to satisfy nonlinear L2 gain performance index. The desired queue size was achieved, and the asymptotic stability was obtaineed for nonlinear TCP time-delay dynamic network systems. In the paper this method ameliorates the complex algorithms of nonlinear TCP time-delay dynamic network systems, simplifies derivation and achieves more easily robust control algorithms for nonlinear dynamic network systems. Finally, the simulation results confirm the feasibility and effectiveness Streszczenie. W artykule zaproponowano odporny system sterowania nieliniowym system sieciowym TCP z opóźnieniem czasowym. Zamodelowano róznego rodzaju interferencje i opóźnienia. Otrzymano pożądany rozmiar kolejki oraz stabilność systemu. Zaproponowana metoda stanowi uproszczenie możliwości sterowania nieliniowymi systemami sieciowymi. (Odporne sterowanie nieliniowym dynamicznym systemem sieciowym TCP)