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作者：Pinto, Samuel C.; Andersson, Sean B.; Hendrickx, Julien M.; Cassandras, Christos G.
作者单位：Boston University; Boston University; Universite Catholique Louvain; Boston University; Boston University
摘要：We address the problem of persistent monitoring, where a finite set of mobile agents has to persistently visit a finite set of targets. Each of these targets has an internal state that evolves with linear stochastic dynamics. The agents can observe these states, and the observation quality is a function of the distance between the agent and a given target. The goal is then to minimize the mean squared estimation error of these target states. We approach the problem from an infinite horizon per...
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作者：Viana, Gustavo S.; Alves, Marcos V. S.; Basilio, Joao Carlos
作者单位：Universidade Federal do Rio de Janeiro
摘要：We address, in this article, the problem of codiagnosability of networked discrete event systems with timing structure (NDESWTS) subject to delays and loss of observations of events between the measurement sites (MS) and local diagnosers (LD). To this end, we first introduce a new timed model that represents the dynamic behavior of the plant based on the, a priori, knowledge of the minimal activation time for each transition of the plant and on the maximal delays in the communication channels ...
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作者：Yi, Bowen; Wang, Ruigang; Manchester, Ian R.
作者单位：University of Sydney; University of Sydney
摘要：In this article, we propose a new approach to design globally convergent reduced-order observers for nonlinear control systems via contraction analysis and convex optimization. Despite the fact that contraction is a concept naturally suitable for state estimation, the existing solutions are either local or relatively conservative when applying to physical systems. To address this, we show that this problem can be translated into an offline search for a coordinate transformation after which the...
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作者：Zafar, Armaghan; Cantoni, Michael; Farokhi, Farhad
作者单位：University of Melbourne
摘要：A structured preconditioned conjugate gradient (PCG) based solver is developed for implementing the Newton updates in second-order methods for a class of constrained network optimal control problems. Of specific interest are problems with discrete-time dynamics arising from the path-graph interconnection of N heterogeneous subsystems. The arithmetic complexity of each PCG step is O(NT), where T is the length of the time horizon. The proposed preconditioning involves a fixed number of block Jac...
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作者：Franci, Barbara; Grammatico, Sergio
作者单位：Delft University of Technology
摘要：We solve the stochastic generalized Nash equilibrium (SGNE) problem in merely monotone games with expected value cost functions. Specifically, we present the first distributed SGNE-seeking algorithm for monotone games that require one proximal computation (e.g., one projection step) and one pseudogradient evaluation per iteration. Our main contribution is to extend the relaxed forward-backward operator splitting by the Malitsky (Mathematical Programming, 2019) to the stochastic case and in tur...
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作者：Xu, Wenying; Kurths, Juergen; Wen, Guanghui; Yu, Xinghuo
作者单位：Southeast University - China; Potsdam Institut fur Klimafolgenforschung; Royal Melbourne Institute of Technology (RMIT)
摘要：This article investigates the second-order consensus issue for multiagent systems subject to both limited communication resources and replay attacks. First, an asynchronous dynamic edge event-triggered (DEET) communication scheme is developed to reduce the utilization of network resources in the absence of attacks. Then, we further consider the case of replay attacks launched by multiple adversaries, under which the transmitted information is maliciously replaced by a previous unnecessary mess...
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作者：Ferrante, Augusto; Picci, Giorgio
作者单位：University of Padua
摘要：This article answers a system-theoretic conjecture proposed by Ferrante and Picci (2017). A counterexample to such conjecture is presented along with a modification of the statement, which preserves the essence of the result and is proven to be true.
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作者：Zhang, Yanjun; Zhang, Ji-Feng; Liu, Xiao-Kang
作者单位：Beijing Institute of Technology; Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Huazhong University of Science & Technology
摘要：This article presents a new study on adaptive control of multi-input and multi-output (MIMO) discrete-time nonlinear systems with a noncanonical form involving parametric uncertainties. The adaptive control scheme employs a vector relative degree formulation to reconstruct the noncanonical system dynamics and derives a normal form. Then, a new matrix decomposition-based adaptive control scheme is proposed for the controlled plant with a vector relative degree [1, 1,..., 1] under some relaxed d...
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作者：Della Rossa, Matteo; Tanwani, Aneel; Zaccarian, Luca
作者单位：Universite Catholique Louvain; Centre National de la Recherche Scientifique (CNRS); Universite de Toulouse; University of Trento
摘要：This article concerns robustness analysis for interconnections of two dynamical systems (described by upper semicontinuous differential inclusions) using a generalized notion of derivatives associated with locally Lipschitz Lyapunov functions obtained from a finite family of differentiable functions. We first provide sufficient conditions for input-to-state stability for differential inclusions, using a class of nonsmooth (but locally Lipschitz) candidate Lyapunov functions and the concept of ...
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作者：Guo, Meichen; De Persis, Claudio; Tesi, Pietro
作者单位：University of Groningen; University of Florence
摘要：In a recent article, we have shown how to learn controllers for unknown linear systems using finite-length noisy data by solving linear matrix inequalities. In this article, we extend this approach to deal with unknown nonlinear polynomial systems by formulating stability certificates in the form of data-dependent sum of squares programs, whose solution directly provides a stabilizing controller and a Lyapunov function. We then derive variations of this result that lead to more advantageous co...
