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作者：Zhang, Yuan; Xia, Yuanqing; Li, Aming
作者单位：Beijing Institute of Technology; Peking University; Peking University
摘要：In this article, we explore the structural controllability of switched linear continuous-time systems. We first identify a gap in the proof of a fundamental criterion for the structural controllability of these systems. To solve this problem, we develop several novel graph-theoretic concepts, such as multilayer dynamic graphs, generalized stems/buds, and generalized cacti. Using these concepts, we provide a comprehensive proof for the criterion. Our approach also induces a new, generalized cac...
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作者：Zhou, Yu; Polyakov, Andrey; Zheng, Gang
作者单位：Centre National de la Recherche Scientifique (CNRS); Inria
摘要：This article develops a homogeneity-based approach to finite/fixed-time stabilization of a linear time-invariant (LTI) system with quantized measurements. A sufficient condition for finite/fixed-time stabilization of multiinput LTI system under state quantization is derived. It is shown that a homogeneous state feedback with a novel logarithmic-like quantizer design can guarantee finite/fixed-time stability of the closed-loop system, provided that the quantization is sufficiently dense. Theore...
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作者：Luo, Xiaoyu; Fang, Chongrong; He, Jianping; Zhao, Chengcheng; Paccagnan, Dario
作者单位：Shanghai Jiao Tong University; Zhejiang University; Zhejiang University; Imperial College London
摘要：Security issues have gathered growing interest within the control systems community, as physical components and communication networks are increasingly vulnerable to cyber attacks. In this context, recent literature has studied increasingly sophisticated false data injection attacks, with the aim to design mitigative measures that improve the systems' security. Notably, data-driven attack strategies-whereby the system dynamics is oblivious to the adversary-have received increasing attention. H...
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作者：de Oliveira, Arthur Castello B.; Siami, Milad; Sontag, Eduardo D.
作者单位：Northeastern University; Northeastern University
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作者：Deutscher, Joachim
作者单位：Ulm University
摘要：This article considers the data-driven stabilization of linear boundary controlled parabolic PDEs by making use of the Koopman operator. For this, a Koopman eigenstructure assignment problem is solved, which amounts to determining a feedback of the Koopman open-loop eigenfunctionals assigning a desired finite set of closed-loop Koopman eigenvalues and eigenfunctionals to the closed-loop system. It is shown that the designed controller only needs a finite number of open-loop Koopman eigenvalues...
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作者：Mao, Yanwen; Data, Deepesh; Diggavi, Suhas; Tabuada, Paulo
作者单位：University of California System; University of California Los Angeles
摘要：In this article, we study the problem of decentralized optimization in the presence of adversarial attacks. In this problem, we consider a collection of nodes connected through a network, each equipped with a local function. These nodes are asked to collaboratively compute the global optimizer, i.e., the point that minimizes the aggregated local functions, using their local information and messages exchanged with their neighbors. Moreover, each node should agree on the said minimizer despite a...
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作者：Scheres, K. J. A.; Dolk, V. S.; Chong, M. S.; Postoyan, R.; Heemels, W. P. M. H.
作者单位：Eindhoven University of Technology; Universite de Lorraine; Centre National de la Recherche Scientifique (CNRS)
摘要：We consider the design of event-triggered distributed controllers for multi-agent systems that are digitally implemented on local computation platforms and communicate over a packet-based network. Each agent is equipped with a local triggering mechanism that is only evaluated at the local sampling instants, thereby, taking a periodic event-triggered approach in which the sampling intervals are allowed to vary (jitter). Moreover, the locally triggered transmissions are subject to unknown, bound...
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作者：Zorzi, Mattia
作者单位：University of Padua
摘要：This article considers the problem to estimate a graphical model corresponding to an autoregressive moving-average (ARMA) Gaussian stochastic process. We propose a new maximum entropy covariance and cepstral extension problem and we show that the problem admits an approximate solution, which represents an ARMA graphical model whose topology is determined by the selected entries of the covariance lags considered in the extension problem. Then, we show how the corresponding dual problem is conne...
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作者：Astolfi, Alessandro; Bhattacharjee, Debraj; Manca, Giorgio; Sassano, Mario
作者单位：King Abdullah University of Science & Technology; Imperial College London; Politecnico di Bari; University of Rome Tor Vergata
摘要：The steady-state optimal filtering problem for linear systems is revisited with the objective of establishing further insights on the structure of the underlying solution. It is shown that, in addition to the invariance property of a suitably defined hyperplane, the optimal filter is related to a triangularizing change of coordinates for certain Hamiltonian dynamics associated to the filtering problem. The implication of the above observation is twofold. First, the novel interpretation admits ...
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作者：John, Varkey M.; Vamvoudakis, Kyriakos G.
作者单位：University System of Georgia; Georgia Institute of Technology; University System of Georgia; Georgia Institute of Technology
摘要：In this article, we explore deception mechanisms in the context of game-theoretic learning. We first examine a scenario where certain agents, referred to as intelligent players (IPs), given that they have increased intelligence, attempt to discern the scores of the learning mechanisms used by agents of lower intelligence, referred to as agents. To counteract this, agents alter the values of the score function to mislead IPs, thus obstructing the ability to learn the learning parameters of agen...
