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作者：Wang, Lei; Ren, Zihao; Yuan, Deming; Shi, Guodong
作者单位：Zhejiang University; Nanjing University of Science & Technology; University of Sydney
摘要：Distributed computing is fundamental to multiagent systems, with solving distributed linear equations as a typical example. In this article, we study distributed solvers for network linear equations over a network with node-to-node communication messages compressed as scalar values. Our key idea lies in a dimension compression scheme that includes a dimension-compressing vector and a data unfolding step. The compression vector applies to individual node states as an inner product to generate a...
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作者：Zhao, Dong; Shi, Yang; Ding, Steven X.; Li, Yueyang; Fu, Fangzhou
作者单位：Beihang University; University of Victoria; University of Duisburg Essen; University of Jinan; Sun Yat Sen University
摘要：The replay attack detection problem is studied from a new perspective based on the parity space method in this article. The proposed detection methods can distinguish system fault and replay attack, handle both input and output data replay, maintain certain control performance, and be implemented conveniently and efficiently. First, the replay attack effect on the residual is derived and analyzed. The residual change induced by replay attack is characterized explicitly, and the detection perfo...
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作者：Liu, Fengjiao; Rapakoulias, George; Tsiotras, Panagiotis
作者单位：State University System of Florida; Florida A&M University; Florida State University; University System of Georgia; Georgia Institute of Technology
摘要：In this article, we study the optimal control problem for steering the state covariance of a discrete-time linear stochastic system over a finite time horizon. First, we establish the existence and uniqueness of the optimal control law for a quadratic cost function. Then, we show the separation of the optimal mean and the covariance steering problems. We also develop efficient computational methods to solve for the optimal control law, which is identified as the solution to a semidefinite prog...
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作者：Simard, Joel D.; Nielsen, Christopher; Miller, Daniel E.
作者单位：Imperial College London; University of Waterloo
摘要：Linear parameter-varying (LPV) systems, which have dynamics that vary according to a scheduling parameter, are capable of representing a wide variety of nonlinear and time-varying dynamics. The LPV paradigm preserves well-understood linear design methods, although the stability analysis of these systems has remained difficult. In a recent paper, it is shown that under some stringent conditions, a linear continuous-time gain-scheduled output feedback controller can be designed to provide closed...
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作者：Meiners, Florian; Himmel, Andreas; Adamy, Jurgen
作者单位：Technical University of Darmstadt; Technical University of Darmstadt
摘要：Controllability and observability properties of control systems manifest on the tangent bundle and its dual, the cotangent bundle, respectively. Linear systems admit the exploitation of this duality via the formulation of an explicit dual system, which is controllable iff the original system is observable and vice versa. While in the context of linear systems the duality is understood well and facilitates the conversion of controller and observer design schemes, there are a number of interesti...
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作者：Rezaeinia, Pouya; Gharesifard, Bahman; Linder, Tamas
作者单位：Queens University - Canada; University of California System; University of California Los Angeles
摘要：In this article, we consider a distributed optimization problem for the sum of convex functions where the underlying communication network connecting nodes at each time epoch is drawn at random from a collection of directed graphs. We propose a modified version of the subgradient-push algorithm that provably almost surely converges to an optimizer on any such sequence of random directed graphs. We also prove that the convergence rate of our proposed algorithm is upper bounded as O(1/root t), w...
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作者：Granzotto, Mathieu; Postoyan, Romain; Nesic, Dragan; Teel, Andrew R.
作者单位：University of Melbourne; Centre National de la Recherche Scientifique (CNRS); Universite de Lorraine; University of California System; University of California Santa Barbara
摘要：In this article, we analyze the stability properties of stochastic linear systems in closed loop with an optimal policy that minimizes a discounted quadratic cost in expectation. In particular, the linear system is perturbed by both additive and multiplicative stochastic disturbances. We provide conditions under which mean-square boundedness, mean-square stability, and recurrence properties hold for the closed-loop system. We distinguish two cases, when these properties are verified for any va...
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作者：Huang, Yuanhanqing; Hu, Jianghai
作者单位：Purdue University System; Purdue University
摘要：A variety of practical problems can be modeled by the decision-making process in multiplayer games where a group of self-interested players aim at optimizing their own local objectives, while the objectives depend on the actions taken by others. The local gradient information of each player, essential in implementing algorithms for finding game solutions, is all too often unavailable. In this article, we focus on designing solution algorithms for multiplayer games using bandit feedback, i.e., ...
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作者：Karafyllis, Iasson; Theodosis, Dionysios; Papageorgiou, Markos
作者单位：National Technical University of Athens; Technical University of Crete; Ningbo University
摘要：Forward complete systems are guaranteed to have solutions that exist globally for all positive time. In this article, a relaxed Lyapunov-like condition for forward completeness is presented for finite-dimensional systems defined on open sets that does not require boundedness of the Lyapunov-like function along the solutions of the system but an exponential growth condition. The corresponding condition is then exploited for the design of autonomous 2-D movement, with focus on lane-free cruise c...
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作者：Ma, Ziyue; Cai, Kai
作者单位：Xidian University; Zhejiang University; Osaka Metropolitan University
摘要：In this article, we propose a general framework to design optimal secret protection policies in discrete-event systems. The system is modeled by an automaton in which several states are secret and assigned with different confidentiality requirement. Events in the system can be protected to verify the identity of the user, and a user who successfully executes/passes a protected event gains some authorization. Our purpose is to design an event-protecting policy such that any user, either legal o...
