Title :
A robust PID non-fragile control theoretic analysis to TCP/AQM network
Author :
Xu Wencong ; Zhu Zijie ; Gao Xiang
Author_Institution :
28 Res. Instn. of China Electron. Technol. Group Corp., Nanjing, China
Abstract :
A robust PID non-fragile control mechanism is introduced in order to the control TCP/AQM network. The TCP/AQM linear system is described based on network dynamic model. A PID controller is proposed to adjust network queue congestion. The close-loop system transfer function is transferred to a high-dimension linear time-delay system. Consider the system disturbance and control structure error, the stability of time-delay system is analyzed, and a stability criterion is obtained with some conservatism. The sufficient condition is given to judge the stability of TCP/AQM based on linear matrix inequality (LMI). Then the controller parameters are solved by LMI. Finally, an example is given to illustrate the feasibility of the proposed method.
Keywords :
closed loop systems; delays; linear matrix inequalities; linear systems; queueing theory; robust control; stability criteria; three-term control; transfer functions; transport protocols; AQM linear system; AQM network; LMI; TCP linear system; TCP network; active queue management; close-loop system transfer function; control structure error; high-dimension linear time-delay system; linear matrix inequality; network dynamic model; network queue congestion; robust PID nonfragile control theoretic analysis; stability criterion; Analytical models; Control systems; Mathematical model; Robustness; Stability criteria; Transfer functions; PID control; Robust non-fragile; TCP/AQM; linear matrix inequality (LMI);
Conference_Titel :
Control and Decision Conference (CCDC), 2015 27th Chinese
Conference_Location :
Qingdao
Print_ISBN :
978-1-4799-7016-2
DOI :
10.1109/CCDC.2015.7162284
