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作者：Liu, Siyuan; Yin, Xiang; Dimarogonas, Dimos V.; Zamani, Majid
作者单位：Royal Institute of Technology; Shanghai Jiao Tong University; University of Colorado System; University of Colorado Boulder; University of Munich
摘要：This article investigates an important class of information-flow security property called opacity for stochastic control systems. Opacity captures whether a system's secret behavior (a subset of the system's behavior that is considered to be critical) can be kept from outside observers. Existing works on opacity for control systems only provide a binary characterization of the system's security level by determining whether the system is opaque or not. In this work, we introduce a quantifiable ...
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作者：Xu, Jiapeng; Chen, Xiang; Tan, Ying; Zhou, Kemin
作者单位：University of Windsor; University of Melbourne; Nanjing University
摘要：This article proposes a novel multiobjective control framework for linear time-invariant systems in which performance and robustness can be achieved in a complementary way instead of a tradeoff. In particular, a state-space solution is first established for a new stabilizing control structure consisting of two independently designed controllers coordinated with a Youla-type operator Q. It is then shown by performance analysis that these two independently designed controllers operate in a natur...
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作者：Barcena-Petisco, Jon Asier; Zuazua, Enrique
作者单位：University of Basque Country; University of Erlangen Nuremberg; University of Deusto; Autonomous University of Madrid
摘要：In this article, we study the tracking or sidewise controllability of the heat equation. More precisely, we seek controls that, acting on part of the boundary of the domain where the heat process evolves, aim to assure that the normal trace or flux on the complementary set tracks a given trajectory. The dual equivalent observability problem is identified. It consists of estimating the boundary sources, localized on a given subset of the boundary, out of boundary measurements on the complementa...
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作者：Simard, Joel D.; Moreschini, Alessio; Astolfi, Alessandro
作者单位：Imperial College London; University of Rome Tor Vergata
摘要：In this article, we extend the notion of time-domain moment to a class of general systems of nonlinear differential-algebraic equations. In addition, a new family of systems achieving moment matching is constructed. Provided that mild conditions hold, and for any given dimension at least as large as that of the signal generator, it is proven that this family of systems parameterizes all systems achieving moment matching. Four illustrative examples are provided. In the first and second example,...
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作者：Wang, Kai; Zhang, Sixing; Gros, Sebastien; Rakovic, Sasa V.
作者单位：Norwegian University of Science & Technology (NTNU); Beijing Information Science & Technology University; Beijing Institute of Technology
摘要：In this article, we consider tube model predictive control of discrete-time linear systems subject to additive bounded disturbances and mixed state and control constraints. An improved tube model predictive controller, leveraging the advantages and mitigating the disadvantages of three pivotal existing methods, is proposed. Its computational aspects and theoretical properties are thoroughly discussed and compared with its predecessors. Two numerical examples are provided to illustrate the bene...
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作者：Braun, Philipp; Giordano, Giulia; Kellett, Christopher M.; Shames, Iman; Zaccarian, Luca
作者单位：Australian National University; University of Trento; Universite de Toulouse; Centre National de la Recherche Scientifique (CNRS)
摘要：A stabilizing controller design for linear systems subject to asymmetric actuator saturation is proposed. Stabilization is achieved by focusing on shifted equilibria selected via the solution of an optimization problem ensuring convergence to the origin of the shifted equilibrium. To enable the computational time required by the optimizer, we impose sampled-data updates of the shifted equilibria and cast our description within a hybrid dynamical systems formulation. Two feedback solutions are ...
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作者：Ozer, Ahmet Ozkan; Aydn, Ahmet Kaan; Emran, Rafi
作者单位：Western Kentucky University; University System of Maryland; University of Maryland Baltimore County; New Jersey Institute of Technology
摘要：The dynamic partial differential equation model governing longitudinal oscillations in magnetizable piezoelectric beams exhibits exponentially stable solutions when subjected to two boundary state feedback controllers. An analytically established exponential decay rate by the Lyapunov approach ensures the stabilization of the system to equilibrium, although the actual decay rate could potentially be improved. The decay rate of the closed-loop system is highly sensitive to the choice of materia...
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作者：Zhou, Xu; Ma, Zhongjing; Zou, Suli; Margellos, Kostas
作者单位：University of Oxford
摘要：In this article, we consider a class of consensus optimization problems over a time-varying communication network wherein each agent can only interact with its neighbors. The target is to minimize the summation of all local and possibly nonsmooth objectives in the presence of different constraint sets per agent. To achieve this goal, we propose a novel distributed heavy-ball algorithm that combines the subgradient tracking technique with a momentum term related to history information. This alg...
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作者：Dave, Aditya; Nishanth Venkatesh, S.; Malikopoulos, Andreas A.
作者单位：Cornell University
摘要：In this article, we investigate discrete-time decision-making problems in uncertain systems with partially observed states. We consider a nonstochastic model, where uncontrolled disturbances acting on the system take values in bounded sets with unknown distributions. We present a general framework for decision-making in such problems by using the notion of the information state and approximate information state and introduce conditions to identify an uncertain variable that can be used to comp...
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作者：Meng, Yiming; Zhou, Ruikun; Liu, Jun
作者单位：University of Illinois System; University of Illinois Urbana-Champaign; University of Waterloo
摘要：The estimation for the region of attraction of an asymptotically stable equilibrium point is crucial in the analysis of nonlinear systems. There has been a recent surge of interest in estimating the solution to Zubov's equation, whose nontrivial sublevel sets form the exact ROA. In this article, we propose a lifting approach to map observable data into an infinite-dimensional function space, which generates a flow governed by the proposed Zubov-Koopman operators. By learning a Zubov-Koopman op...
