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This paper studies the problem of stability analysis and stabilization for discrete-time interconnected systems. Firstly, a mathematical model of a class of nonlinear discrete time-delay large scale systems is established by using the Takagi-Sugeno(T-S) model, then the scheme of decentralized parallel distributed compensations (DPDC) fuzzy control is used to design controllers. A new Lyapunov-Krasovskii...
We investigate the mode propagation and coupling in multimode fibers, based on modeling the wave propagation through the coupled power equation. Using this model, the power evolution of the various propagating modes in fibers can be visualized and the impact of mode-dependent loss and mode coupling can be quantitatively analyzed.
In high speed applications, the clock rates have approached giga-hertz ranges. Signal integrity has become a critical issue and is posing severe challenges to the designers. This necessitates interconnects capable of supporting broadband signals without degradation. In signal integrity analysis, Sparameters are labeled as the behavioral model that can be used for describing the behavior of linear...
This paper is focused on a new class of cellular neural networks with memristive, fuzzy logic, time-varying delays and general activation functions. The dynamic analysis in the paper employs results from the theory of differential equations with discontinuous right-hand side as introduced by Filippov. Some sufficient conditions in terms of algebraic criteria are presented such that the proposed system...
Three dimensional (3D) interconnect is a solution for designing today's Integrated Circuits (ICs) in a view to achieve the ever growing consumer and market demands. The 3D interconnects in the form of copper filled Through Silicon Via (TSV) technology has offered significant advantages in adding more functionalities to the chip, keeping similar die size. With 3D interconnects, the designers can emphasize...
GF-3 is the Chinese Synthetic Aperture Radar (SAR) satellite mission with scientific and commercial applications, which was launched in August, 2016. In this paper, various error sources about system position are analyzed based on real data of GF-3 satellite. The results show that satellite positioning accuracy is less than 4m.
Differential SAR tomography is a means to resolve layover of temporally coherent scatterers while simultaneously estimating their elevation and average deformation. In alpine regions, drastic height variations result in frequent layovers which are rejected during typical persistent scatterer interferometric (PSI) analyses. In this paper, we explore the potential of tomographic techniques to improve...
Logistics model and plans at disaster are important in disaster relief operations. It is essential to gather the relevant information in developing such models. This study focused on the first step of development of logistics models through the simulated data. Similarity between logistics and electric circuits was considered in the simulation which was used the MATLAB®/Simulink as a platform for such...
The study extends the traveling salesman problem with profits by considering time-dependent cost and multi-trip mode. Based on the introduction of alternative arcs, a network flow model is established and an exact label setting approach is designed. Upper bound of the partial label is put forward to accelerate the approach. Computational results show the effectiveness of the proposed approach.
This paper studies the problem of determining sensor locations in a large sensor network using only relative distance (range) measurement. In this paper, we consider a synchronous communication protocol when 1) the communication delay between sensors is uncertain; 2) successive packet loss is finite. Based on the barycentric coordinate representation, our work generalizes the DILOC algorithm in the...
In this paper, the problem of controller design for networked control systems with stochastic cyber-attacks is investigated. Firstly, considering the network-induced delay and cyber-attacks, a mathematical controller model for networked control systems is constructed for analysis. Secondly, based on this model, sufficient conditions for the stability of controller design and gain parameters of desired...
The model reduction problem is studied in this work for the switched genetic regulatory networks (GRNs) with time-varying delays. The attention is focused on constructing a reduced-order model to approximate the considered high-order GRNs under that the switching signal is subject to some certain constraints, such that the error system between the original system and the reduced-order one is exponentially...
This study is concerned with the circular orbital spacecraft rendezvous by the delayed output feedback (DOF). Considering that the rendezvous system is subjected to actuator delay and the relative velocity is difficult to be measured actually in practice, the DOF controller is constructed by just using the present and past inputs and outputs to predict the future state, which is then used to form...
This paper is concerned with an optimal control problem of anticipated forward-backward stochastic differential equation with delay. We obtain an explicit representation of optimal control for delayed problem first, and then use it to solve a delayed cash management problem with recursive utility. The explicit optimal control strategy of the investor is given and some numerical simulations are used...
In this paper, we consider an optimal estimation problem in the sense of least mean square error for linear discrete-time systems with multiple state delays in the measurement output. Since computation complexity is high for augmentation approach, a lot of researches have been dedicated to finding alternative ways for the optimal estimation design. In existing studies, two dimensional Riccati iteration...
This paper is concerned with the controller design for a one dimensional Schrödinger equation with an input delay on the boundary. A state-feedback control law is presented via the backstepping method to stabilize the delayed system. The numerical simulation verifies the feasibility of the suggested control law.
Magnitude-error and phase-error constrained optimal designs of finite impulse response (FIR) filters are nonconvex problems due to the nonconvexity of the lower-bound constraint of magnitude at any passband frequency point. In order to solve these problems, the nonconvex constraint region at an arbitrary passband frequency is usually approximated by a convex one. In this paper, a new convex constraint...
Both the plant parameter4 and delay time of the system may vary in the time-varying system, which makes system identification relatively complex. In this paper, a new system identification algorithm based on subspace method and cross-correlation function is proposed to identify system parameter and time-delay simultaneously. The time delay is identified with the calculation of the cross-correlation...
The offers on cloud computing infrastructure have focused on providing computing and storage resources, and consider the network mostly as a required add-on and not truly as a resource itself. However, the need to have more robust solutions is becoming clearer. This paper argues that cloud infrastructure services will evolve and allow the definition of complete infrastructures that comprise both computing...
This paper explores a novel model to describe linear dynamic system with random delays. Compared with the existing research, the probabilities of random delays in the novel model are calculated by conditional probabilities. Therefore, the process noises and measurements noises in the new model for random delay problems are infinitely correlated. By treating the model as random parameter matrices Kalman...
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