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This paper addresses the stability issues of delayed nonlinear systems of the form x(t) = A(t, x(t), x(t − d(t)))x(t)+B(t, x(t), x(t − d(t)))x (t − d(t)), that is, the system matrices depend on time and the present and past states. By means of a trajectory-based comparison approach, the stability of original nonlinear system is transformed into that of a positive linear system called comparison system...
It is well-known that the communication among agents plays an important role in leader-following consensus. When the communication fails, it will greatly degrade the performance of the leader-following consensus. As technology develops, memory components are quite cheap. Thus it is very natural to use the information before the communication failure to enhance the robustness of leader-following consensus...
Networked control is now widely used in engineering systems. We have studied networked supervisory control of discrete event systems in several previous papers. In this paper, we investigate the issue of blocking in networked supervisory control. Due to randomness in communication delays, the issue of blocking is much more complex in networked systems. More conditions need to be satisfied in order...
This paper investigates the problem of finite-time extended dissipative analysis for a class of switched delay systems. By using average dwell-time and linear matrix inequality technique, sufficient conditions are proposed to guarantee the switched delay system is finite-time bounded and has finitetime extended dissipative performance, where the H∞, L2 — L∞, Passivity and (Q, S, Ä)-dissipativity performance...
Research results in neurophysiology show the predictive nature of vergence eye movement, vergence eye movement can persistently track a moving target which shifts in distance relative to the head. Few models have attempted to consider prediction of target motion in vergence models. Most models only considered static targets, their input are frozen driving signals. In this paper, a model with estimator...
This paper addresses the containment control problem for discrete-time high-order multi-agent systems with time-varying delays. Based on the distributed containment control protocol only depends on the agent's own information and its neighbors' partial information, the properties of the product of infinite nonnegative matrices and the composite of binary relation are utilized to derive a necessary...
Under the weaker assumption on the drift and diffusion terms, this paper proposes a new parameter-dependent state-feedback controller design scheme for a class of stochastic time delay systems. On the basis of stochastic time delay system stability theory, by tactfully choosing a suitable Lyapunov-Krasovskii functional (LKF), the proposed controller can ensure that the closed-loop system is globally...
This paper is devoted to local stabilization for continues-time T-S fuzzy systems with time-varying delays. A new Lyapunov-Krasovskii functional which is dependent on the membership function is proposed to derive the main results. Since the time derivative of the membership function is considered, larger delay bound can be found in this paper the ones in the literature. In the end, an example is given...
With the increasing ownership of private cars, the problem of traffic congestion in our daily life has become more and more serious. In order to alleviate the traffic congestion and improve the travel efficiency, a feedback control strategy for an traffic zone based on the Macroscopic Fundamental Diagram is designed in this paper. According to the degree of intersections and other basis, the road...
In this paper, we investigate the state estimation problem for timed discrete event systems with communication delays. The problem is how to estimate the current state under the uncertainties caused by partial observations and random observation delays. We construct an augmented automaton after analyzing the influence mechanism of random observation delays existed between the supervisor and the timed...
In reality, traffic demands are quite random, which usually deviate from the application conditions of a certain kind of signal control method and compromise the efficiency of traffic control. To solve such a problem, taking a typical isolated intersection as the research object, the adaptive control of an isolated intersection based on a complete phase group is proposed, which can automatically optimize...
In this paper, it addresses a sort of predictive control with the delay compensation for a kind of nonlinear networked control systems, which have packet dropouts and delays in both sensor-to-controller channel and controller-to-actuator channel. Firstly, an event trigger is designed at the controller side to save the limited resources. Only when the control signals satisfy the event-triggered condition,...
As more and more distributed generations are connected to the grid, the features of micro grid, are no longer the same as conventional grids. A micro-grid fault diagnosis method based on redundant Petri net considering temporal constraints is put forward in this paper. Firstly, a tripartite criterion for fault location is proposed on basis of Wide-area information protection method. Secondly, The...
This paper proposes a newly distributed reduced order agreement protocols based on the observer to investigate the consensus problem of high-order multi-agent systems with various agents and non-uniform delay of various time and directed communication topology. First, on the basis of Riccati equation, Lyapunov method, as well as Algebraic-Graph theory, a novel algorithm with multistep, is provided...
This paper is concerned with the problem of the annular finite-time filtering for a class of switched systems by using an event-triggered communication scheme. Compared with the existing results of finite-time stability for the switched systems, during the specific time interval, the annular finitetime stability not only requires that the state trajectory does not exceed an upper bound but also is...
In this paper, the exponential stability of a class of bi-directional associative memory (BAM) neural networks with recent-history distributed delays is considered. By constructing suitable Lyapunov functional, we derive several sufficient conditions for the globally exponential stability of the equilibrium point of the system. The results of this paper are new and different from previously known...
Based on Cloud Computing, Networked Control Systems and Internet of Things, the concept of Cloud Control Systems is proposed to handle complex and high-intelligent systems with mass data. This paper is concerned with cloud control systems based on data-driven predictive control, which is designed by applying the subspace matrixes method. The proposed algorithm can provide accurate real-time control...
This paper studies the delayed output feedback (DOF) of spacecraft three-axis magnetic attitude control system with actuator delays. By noticing that the linearized system of the magnetic attitude control system is a linear periodic one, the DOF controller is derived for general linear time-varying systems with actuator delays. Compared with other state controllers, the DOF controller only uses the...
The Hammerstein model is an effective way to model the nonlinear systems, which contains a nonlinear static block followed by a linear dynamic block. However, when facing with the strong nonlinear time-delay effects, the nonlinear memoryless block can not work very well. Hence, a time-delay neural network is used as a quasi-dynamic nonlinear block in the established nonlinear Hammerstein model which...
This paper investigates the event-triggered and self-triggered state feedback control for networked control systems (NCSs) with short network-induced delays and packet loss. First, we use a switched system model to describe such a system, which is prior to describe the uncertainty and the time-varying characteristics of the network-induced delays. Based on the switched system model, the co-design...
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