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Fault detection problem of networked control systems with network-induced delay, data packets dropout and disturbance in sensor-to-controller link is discussed. First, we design an observer-based residual generator, and model the residual dynamics to be a discrete-time markovian jump linear system in this paper. By using H∞ optimization theory and linear matrix in-equation approach, the solution of...
The problem of robust H∞ model reduction for uncertain stochastic systems with time-delay is considered in this paper. For a given stable system, we focus on the construction of reduced-order models which guarantee the corresponding error system to be asymptotically stable and have a prescribed H∞ performance. Sufficient conditions are obtained for the existence of solutions to time-delay dependent...
In this paper, a stochastic hybrid genetic networks model is proposed. By taking into account the structure variations at discrete time instances during the process of gene regulation, its robust stochastic stability with intrinsic and extrinsic noises is then addressed from stochastic system point of view. The sufficient stability condition for the hybrid genetic networks could be easily facilitated...
This paper is concerned with robust stochastic stabilization problem for a class of uncertain stochastic fuzzy systems. The purpose is to design a state-feedback fuzzy controller such that the resulting closed-loop system is robustly stochastically asymptotically stable. Sufficient conditions for the solvability of this problem are obtained by using matrix operations and stochastic Lyapunov approach...
In this paper the problems of H∞ performance analysis and control of networked control systems with time varying sampling intervals and delays are studied. A new impulsive system based method is introduced to deal with this problem. Moreover, a new Lyapunov-Krasovskii functional is proposed to establish sufficient conditions for exponential stability and H∞ control of networked control systems. The...
A reliable control scheme is developed in this paper for a class of linear based on sensor mixed faults. A more practical mixed faults model of sensor than outage and continuous fault model is considered. The mixed faults model combine outage with continuous fault. Using linear matrix inequality, A sufficient condition is given to guaranteed asymptotic stability and H performance when all control...
A new stabilization condition for T-S fuzzy systems via the fuzzy Lyapunov function and the non-PDC controller is proposed in this paper. Unlike the existing literature, the bounds of the time derivatives of membership functions are not required and the BMIs problems do net arise, either. All stability conditions are expressed in the form of linear matrix inequalities (LMIs). We also extend the proposed...
The state observer and H∞ control via output feedback for time-delay neutral systems are studied in this paper. A sufficient condition is given for the existence of the H∞ state observer of the system first. And then a new criterion of the stability for the closed loop system via output feedback is presented by two linear matrix inequalities. Finally a numerical example is given to demonstrate the...
This paper addresses the global consensus problem of multi-agent systems with a leader-follower communication topology consisting of Lur'e type of node dynamics. A decomposition approach is proposed to convert the consensus of a high-dimensional Lur'e network into the test of a set of matrix inequalities whose dimensions are the same as a single node system. The notion of global consensus region is...
In this paper, motion synchronization control of bilateral tele-operation system is investigated. Compared with previous passivity framework, the communication delays are assumed to be stochastic time-varying. By feedback linearization, the nonlinear dynamics of the tele-operation system is transformed into two linear sub-systems: local master/slave position control and delayed motion synchronization...
This paper deals with global synchronization in arrays of coupled delayed neural networks with delayed coupling. Through employing Lyapunov-Krasovskii functional and Kronecker product technique, one novel synchronization criterion is presented in terms of linear matrix inequalities(LMIs) based on the integral inequality and convex combination, in which the condition is dependent not only on lower...
This paper is concerned with non-fragile H∞ filtering for linear systems in network environments. The filtering error system is modeled as a linear system with an interval time-varying delay. Then a delay-decomposition approach is employed to derive a sufficient condition such that the filtering error system is asymptotically stable with a prescribed H∞ disturbance attenuation level, where the non-fragility...
In this paper, four new control methods of output feedback proportional-integral-derivative (PID) control, dynamical output feedback PID control, state feedback PID control and dynamical state feedback PID control are presented for networked control system (NCS) with time-delay and data packet dropout. The work focuses on the model, stability and PID controller design of NCS with time-delay and dropped...
This paper investigates the estimate of domain of attraction for a class of nonlinear Port-Controlled Hamiltonian (PCH) systems subject to both actuator saturation and disturbances. Firstly, two conditions are established to determine whether an ellipsoid is contractively invariant for the systems only with actuator saturation, with which the biggest ellipsoid contained in the domain of attraction...
This paper investigates delay-dependent passive analysis and control for stochastic differential systems with time delay. The condition for delay-dependent passive control of stochastic differential systems with time delay is obtained by constructing Lyapunov-Krasovskii function, employing model transformation and Newton-Leibniz equality and slack matrix technique. Based on this condition, a delay-dependent...
In this paper, robust model predictive control approach is proposed for time-delay systems with structured uncertainty, which has rarely been addressed in the literature. Using the control invariant set and linear matrix inequalities (LMIs), the control approach could stabilized the time-delay systems with structured uncertainty. The effectiveness of the proposed approach is verified by simulation...
In this paper, we investigate the robust weighted H∞ filtering problem for networked systems with multiple sensor faults under the discrete-time framework. The multiple outputs of the plant are measured by separate sensors and each sensor has certain failure rate. Network-induced delay, packet dropouts and network-induced disorder phenomena are all characterized in the modeling of the network link...
In this technical note, an H2 approach to network-based control system with multiple packet dropouts is introduced. The communication links over network media are assumed to be data-packet dropouts. Two channel packet dropouts are simultaneously considered due to limited communication capacity and unreliable communication links. One is measurement channel packet dropouts which are from the sensor...
An improved method of synthesizing constrained robust model predictive controller for systems with polytopic description is proposed. A continuum of terminal constraint sets depending on an external variable is constructed offline, and the robust stability is achieved online with a variable control horizon and a time varying terminal constraint set by solving the minmax optimization problem, which...
This paper is based on the stochastic linear quadratic (SLQ) control problem. The robustness of stabilizability of optimal controller for time-delay stochastic differential systems with Markov jumping parameters is investigated. Stochastic Lyapunov-Krasovskii functional, stochastic analysis, Ito formula, Schur complement and slack matrices are employed to analyze the exponential stability in mean...
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