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作者:Deutscher, Joachim; Gehring, Nicole
作者单位:Ulm University; Johannes Kepler University Linz
摘要:This article deals with the backstepping design of observer-based compensators for parabolic ODE-PDE-ODE systems. The latter consist of n coupled parabolic PDEs with distinct diffusion coefficients and spatially-varying coefficients, that are bidirectionally coupled to ODEs at both boundaries. The actuation and sensing appears through these ODEs resulting in a challenging control problem. For this setup a systematic backstepping approach is proposed, in order to determine a state feedback cont...
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作者:Ma, Qichao; Qin, Jiahu; Yu, Xinghuo; Wang, Long
作者单位:Chinese Academy of Sciences; University of Science & Technology of China, CAS; Royal Melbourne Institute of Technology (RMIT); Peking University
摘要:In this article, we deal with the consensus problem of multiple partial-state coupled linear systems, which are neutrally stable. These systems communicate over dynamic undirected networks, which change continuously and can be disconnected at any time. We develop an analysis framework from uniform complete observability theory to work out the necessary and sufficient conditions for exponential consensus. It turns out that, with a suitably designed feedback matrix, exponential consensus can be ...
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作者:Meira-Goes, Romulo; Lafortune, Stephane; Marchand, Herve
作者单位:University of Michigan System; University of Michigan; Universite de Rennes; Inria
摘要:We consider feedback control systems where sensor readings may be compromised by a malicious attacker intending on causing damage to the system. We study this problem at the supervisory layer of the control system, using discrete event systems techniques. We assume that the attacker can edit the outputs from the sensors of the system before they reach the supervisory controller. In this context, we formulate the problem of synthesizing a supervisor that is robust against the class of edit atta...
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作者:Ramaswamy, Arunselvan; Bhatnagar, Shalabh; Quevedo, Daniel E.
作者单位:University of Paderborn; University of Paderborn; Indian Institute of Science (IISC) - Bangalore; Bosch; Indian Institute of Science (IISC) - Bangalore; Queensland University of Technology (QUT)
摘要:Asynchronous stochastic approximations (SAs) are an important class of model-free algorithms, tools, and techniques that are popular in multiagent and distributed control scenarios. To counter Bellman's curse of dimensionality, such algorithms are coupled with function approximations. Although the learning/control problem becomes more tractable, function approximations affect stability and convergence. In this article, we present verifiable sufficient conditions for stability and convergence o...
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作者:Zhao, Guoxiang; Zhu, Minghui
作者单位:Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park
摘要:This article studies a class of multirobot coordination problems where a team of robots aim to reach their goal regions with minimum time and avoid collisions with obstacles and other robots. A novel numerical algorithm is proposed to identify the Pareto optimal solutions where no robot can unilaterally reduce its traveling time without extending others'. The consistent approximation of the algorithm in the epigraphical profile sense is guaranteed using set-valued numerical analysis. Experimen...
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作者:Li, Yifeng; Zhu, Jiandong; Li, Bowen; Liu, Yang; Lu, Jianquan
作者单位:Nanjing Normal University; Southeast University - China; Chengdu University; Zhejiang Normal University; Southeast University - China
摘要:For a Boolean network with disturbances and outputs, a necessary and sufficient graphic condition for the original disturbance decoupling is proposed, and it reveals that the outputs are unaffected by the disturbances if and only if the vertex-colored state transition graph has a concolorous perfect vertex partition (CP-VP). In addition, if the CP-VP is an equal partition, a corresponding system decomposition is implemented. Furthermore, an algorithm is designed to check the existence of a CP-...
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作者:Zhang, Zhirong; Song, Yongduan; Wen, Changyun
作者单位:Chongqing University; Chongqing University; Nanyang Technological University
摘要:In this article, we present an adaptive decentralized control scheme for a class of interconnected uncertain systems with subsystems having different yet unknown control directions and involving static nonlinear interactions as well as input and output dynamic interactions. A new form of K-filters is designed for each subsystem, and only local information is employed to generate control signals. A new Nussbaum-type function is developed with a key property that allows for the quantification of...
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作者:Holding, Thomas; Lestas, Ioannis
作者单位:Imperial College London; University of Cambridge
摘要:In part I we considered the problem of convergence to a saddle point of a concave-convex function in C-2 via gradient dynamics and an exact characterization was given to their asymptotic behavior. In part II we consider a general class of subgradient dynamics that provide a restriction in a convex domain. We show that despite the nonlinear and nonsmooth character of these dynamics their omega-limit set is comprised of solutions to only linear ODEs. In particular, we show that the latter are so...
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作者:Pin, Gilberto; Fenu, Gianfranco; Casagrande, Vittorio; Zorzenon, Davide; Parisini, Thomas
作者单位:University of Padua; University of Trieste; University of London; University College London; Technical University of Berlin; Imperial College London; University of Cyprus
摘要:The article deals with the stabilization of nonlinear systems in which the loop is closed over a lossy nonacknowledged communication network. Given a regional input-to-state (ISS) stabilizing state-feedback control law, designed without accounting for the network-induced delays, we propose a nonacknowledged communication policy that allows to deploy the above controller over the network without any modification, while preserving the regional ISS property. The time-varying delays and packet dro...
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作者:Bakshi, Kaivalya; Fan, David D.; Theodorou, Evangelos A.
作者单位:University System of Georgia; Georgia Institute of Technology; University System of Georgia; Georgia Institute of Technology
摘要:Large-size populations consisting of a continuum of identical and noncooperative agents with stochastic dynamics are useful in modeling various biological and engineered systems. This article addresses the stochastic control problem of designing optimal state-feedback controllers that guarantee the closed-loop stability of the stationary density of such agents with nonlinear Langevin dynamics, under the action of their individual steady-state controls. We represent the corresponding coupled fo...