Based on the fact that queuing delay involved in congestion control algorithm is state-dependent, model of communication over TCP network protocol transformed to a state-dependent differential equation. Hence, our paper firstly presented sufficient condition for stability this class systems. The results are terms linear matrix inequality (LMI). After, general obtained applied design an Active Queue Management (AQM) scheme internet. proposed method verified by simulation examples using NS...

Abstract This paper presents a new model for networked control systems (NCSs) under transmission protocol (TCP) as multiple‐delay system by considering both sensor to controller and actuator delays. An analytical TCP has been considered the network part, an active queue management (AQM) is designed regulate desired length, which ensures holding induced delay its variation within their lower bounds. The assumed possess structured uncertainties due stochastic nature of network. Robust...

A new proportional-derivative-type state feedback controller is proposed for congestion control of transmission protocol (TCP) networks. An analytical TCP model adopted. In the scheme, it possible to efficiently traffic using only queue length at router without need know window size which not available locally. The results are presented in terms delay-dependent linear matrix inequality. method verified by simulation examples NS software, and effectiveness superiority our over other schemes,...

This paper considers the robust stability of uncertain teleoperation systems. Sufficient conditions are derived in terms LMI by representing scheme retarded form time-delay By choosing Lyapunov-Krasovski functional, a delay-independent criterion is presented. We show that system stable and has good performance under specific condition. With given controller parameters, guaranteed presence any value delay admissible uncertainty. To evaluate theoretical analysis, Numerical simulations performed.

The goal of the present paper is to apply control techniques determine Blake cavitation threshold for adiabatic bubbles. Considering state space representation Rayleigh-Plesset (RP) equation, a stability condition derived predict which was determined beforehand by mechanical bias. Moreover, sliding mode has been utilized regulate radius single spherical bubble desired value prevent collapse occurrence great importance in some industrial applications. Simulation results are presented show...

This paper is concerned with the problem of congestion control for class communication networks random parameters. The linear dynamic model TCP network in avoidance mode considered which contain round trip delays both state and input. link capacity, time delay number sessions assumed to be finite Markov process. Active Queue Management (AQM) used adjust queue level congested a fixed value. A output feedback controller dependent parameters synthesized stochastically stabilize TCP/AQM...

This paper presents a new PID congestion controller design for transmission control protocol (TCP) networks. It would be possible to efficiently the TCP traffic in proposed scheme. done via use of only queue length at router needless know window size which is not accessible routers side. The stability condition presented by applying linear matrix inequality (LMI). approach laid out numerical results ns2 software. usability and advantage method shown compared with other schemes such as PI, RED GMV.

In this paper, the state feedback stabilization of uncertain networked control systems (NCSs) is addressed in which both robust stability and a prescribed disturbance attenuation performance for closed-loop NCS are achieved irrespective uncertainties network-induced effects, i.e., delays packet dropouts. Markov chain used to model overall random network induced delays. The resulting system transformed Markovian jump linear (MJLS) with mode-dependent delay. Based on Lyapunov-Krasovskii...

This paper investigates the problem of robust stabilization for uncertain networked control systems (NCSs) with random time delay via output feedback control. A mode dependent controller is proposed by modeling as a Markov Chain. The resulting closed-loop system expressed Markovian jump linear (MJLS) mode-dependent delay. Based on Lyapunov-Krasovskii method, stability condition and design method such structured uncertainties are presented. result formulated in terms LMIs. Output gain can...

This paper deals with the mode-dependent static output feedback stabilization problem of linear networked control systems (NCSs) effect network-induced time delays. The overall delays induced by communication channel are modeled as a Markov chain which is believed to be an ideal model random delay. resulting closed-loop system transformed Markovian jump (MJLS) Based on Lyapunov-Krasovskii functional technique, new delay dependent stability criteria for derived and controller designed....

This paper presents a sufficient stability condition for internet-based tele-operation systems in terms of LMI. The scheme is modeled state-space as time-delay system retarded form and delay-independent criterion extracted. By choosing Lyapunov-Krasovski functional, we show that the stable has good performance under specific LMI condition. With given controller design parameters, guaranteed presence any value delay. Numerical simulations are performed to verify theoretical results.

The goal of the present paper is to apply a pressure field generated by collapsing bubble in blood under ultrasound removing clots. Rayleigh-Plesset (RP) equation has been used obtain realistic estimate bubble's radius and calculate collapse within bubble. Ultrasound frequency properly selected reach desired cause fracture. Moreover, coupling simulation flow clot structure performed using full Navier-Stokes equations, which governs domain, linearized discrete equations for medium necessary...