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作者：Belabbas, Mohamed-Ali; Chen, Xudong; Zelazo, Daniel
作者单位：University of Illinois System; University of Illinois Urbana-Champaign; University of Illinois System; University of Illinois Urbana-Champaign; University of Colorado System; University of Colorado Boulder; Technion Israel Institute of Technology
摘要：A sparsity pattern in R-nxm, for m >= n, is a vector subspace of matrices admitting a basis consisting of canonical basis vectors in R-nxm. We represent a sparsity pattern by a matrix with 0/star-entries, where star-entries are arbitrary real numbers and 0-entries are equal to 0. We say that a sparsity pattern has full structural rank if the maximal rank of matrices contained in it is n. In this article, we investigate the degree of resilience of patterns with full structural rank: We address ...
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作者：Cheng, Xiaodong; Yu, Lanlin; Ren, Dingchao; Scherpen, Jacquelien M. A.
作者单位：University of Cambridge; Hefei University of Technology; Westlake University; Chinese Academy of Sciences; University of Science & Technology of China, CAS
摘要：This article studies reduced-order modeling of dynamic networks with strongly connected topology. Given a graph clustering of an original large-scale network, we construct a quotient graph with less number of vertices, where the edge weights are parameters to be determined. The model of a reduced network is thereby obtained with parameterized system matrices, and then, an edge weighting procedure is devised, aiming to select an optimal set of edge weights to minimize the approximation error be...
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作者：Fotiadis, Filippos; Vamvoudakis, Kyriakos. G.
作者单位：University System of Georgia; Georgia Institute of Technology
摘要：In this article, we consider a game-theoretic framework for cyber-physical systems, where a defender develops a mitigation strategy against an intelligent attacker who exploits the system's uncertainty to remain undetected. The goal of the defender is to optimize a performance cost constructed specifically to account for robustness against stealthy attacks so that the system is regulated. Conversely, the goal of the attacker is to disrupt the system's performance by leveraging its significant ...
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作者：Mulagaleti, Sampath Kumar; Bemporad, Alberto; Zanon, Mario
作者单位：IMT School for Advanced Studies Lucca
摘要：Linear models with additive unknown-but-bounded input disturbances are extensively used to model uncertainty in robust control system design. Typically, the disturbance set is either assumed to be known a priori or estimated from data through set-membership identification. However, the problem of computing a suitable input disturbance set in case the set of possible output values is assigned a priori has received relatively little attention. This problem arises in many contexts, such as in sup...
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作者：Varma, Vineeth Satheeskumar; Postoyan, Romain; Quevedo, Daniel E.; Morarescu, Irinel-Constantin
作者单位：Centre National de la Recherche Scientifique (CNRS); Universite de Lorraine; Queensland University of Technology (QUT)
摘要：We present an emulation-based controller and transmission policy design procedure for nonlinear wireless networked control systems. The objective is to ensure the stability of the closed-loop system, in a stochastic sense, together with given control performance, while minimizing the average power used for communications. The controller is designed by emulation, i.e., ignoring the network, and the transmission power is given by threshold policies. These policies involve waiting a given amount ...
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作者：Alpago, Daniele; Zorzi, Mattia; Ferrante, Augusto
作者单位：University of Padua
摘要：The positive link prediction problem is formulated in a system identification framework: We consider dynamic graphical models for autoregressive moving-average (ARMA) Gaussian random processes. For the identification of the parameters, we model our network on two different time scales: A quicker one, over which we assume that the process representing the dynamics of the agents can be considered to be stationary, and a slower one in which the model parameters may vary. The latter accounts for t...
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作者：Wu, Xuyang; Lu, Jie
作者单位：Royal Institute of Technology; ShanghaiTech University
摘要：This article investigates solving convex composite optimization on an undirected network, where each node, privately endowed with a smooth component function and a nonsmooth one, is required to minimize the sum of all the component functions throughout the network. To address such a problem, a general approximate method of multipliers (AMM) is developed, which attempts to approximate the method of multipliers by virtue of a surrogate function with numerous options. We then design the possibly ...
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作者：Bizyaeva, Anastasia; Franci, Alessio; Leonard, Naomi Ehrich
作者单位：Princeton University; Universidad Nacional Autonoma de Mexico
摘要：We propose a continuous-time multioption nonlinear generalization of classical linear weighted-average opinion dynamics. Nonlinearity is introduced by saturating opinion exchanges, and this is enough to enable a significantly greater range of opinion-forming behaviors with our model as compared to existing linear and nonlinear models. For a group of agents that communicate opinions over a network, these behaviors include multistable agreement and disagreement, tunable sensitivity to input, rob...
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作者：Cai, Jianping; Wen, Changyun; Xing, Lantao; Yan, Qiuzhen
作者单位：Zhejiang University of Water Resources and Electric Power; Nanyang Technological University; Shandong University
摘要：In this article, a decentralized adaptive control scheme is proposed based on backstepping techniques for a class of uncertain interconnected systems with unknown modeling errors and interactions. Unlike existing results, the functions bounding modeling errors and interactions are not required to meet the triangular condition. Namely, such functions are allowed to depend on all the states of the interconnected system. It is shown that the proposed adaptive control scheme can ensure all signals...
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作者：Lorenzetti, Pietro; Weiss, George
作者单位：Tel Aviv University
摘要：This article presents an antiwindup propor- tional-integral (PI) controller, using a saturating integrator, for a single-input and single-output (SISO) stable nonlinear plant, whose steady-state input-output map is increasing. We prove that, under reasonable assumptions, there exists an upper bound on the controller gain such that for any constant reference input, the corresponding equilibrium point of the closed-loop system is exponentially stable, with a large region of attraction. When the ...
