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作者：Wang, Yongqiang; Basar, Tamer
作者单位：Clemson University; University of Illinois System; University of Illinois Urbana-Champaign
摘要：We propose a distributed Nash equilibrium seeking approach that can achieve both almost sure convergence and rigorous differential privacy with finite cumulative privacy budget, which is in sharp contrast to existing differential-privacy solutions for networked games that have to trade provable convergence for differential privacy. The approach is applicable when the communication graph is directed and unbalanced. Numerical comparison results with existing counterparts confirm the effectivenes...
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作者：Lou, Xuyang; Li, Yuchun; Sanfelice, Ricardo G.
作者单位：Jiangnan University; University of California System; University of California Santa Cruz
摘要：This article deals with the existence and robust stability of hybrid limit cycles for a class of hybrid systems given by the combination of continuous dynamics on a flow set and discrete dynamics on a jump set. For this purpose, the notion of Zhukovskii stability, typically stated for continuous-time systems, is extended to the hybrid systems. Necessary conditions, particularly, a condition using a forward invariance notion, for existence of hybrid limit cycles are first presented. In addition...
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作者：Marx, Swann; Cerpa, Eduardo
作者单位：Nantes Universite; Ecole Centrale de Nantes; Centre National de la Recherche Scientifique (CNRS); CNRS - Institute for Information Sciences & Technologies (INS2I); Pontificia Universidad Catolica de Chile
摘要：Asymptotic stability is with no doubts an essential property to be studied for any system. This analysis often becomes very difficult for coupled systems and even harder when different time-scales appear. The singular perturbation method allows to decouple a full system into what are called the reduced-order system and the boundary layer system to get simpler stability conditions for the original system. In the infinite-dimensional setting, we do not have a general result making sure this stra...
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作者：Ferraro, Pietro; Penzkofer, Andreas; King, Christopher; Shorten, Robert
作者单位：Imperial College London; Northeastern University
摘要：In this article, we present a feedback approach to the design of an attack mitigation policy for directed acyclic graph (DAG)-based distributed ledgers. We develop a model to analyze the behavior of the ledger under the so-called Tips Inflation Attack, which endangers the liveness of transactions, and we design a control strategy to counteract this attack strategy. The efficacy of this approach is showcased through a theoretical analysis, in the form of two theorems about the stability propert...
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作者：Ma, Qian; Xie, Yingkang
作者单位：Nanjing University of Science & Technology
摘要：This article investigates adaptive fixed-time practical tracking control for nonlinear systems with uncertainties. First, a novel switch function is given, based on which a continuous error compensation system is proposed. The virtual control laws and the adaptive laws are then designed via command filter-based backstepping technique. It is worth noting that the second-order derivability of the proposed virtual control laws is guaranteed by the designed switch function, namely, the validness o...
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作者：Tedesco, Francesco; Casavola, Alessandro
作者单位：University of Calabria
摘要：This article presents a novel distributed constrained monitoring strategy for cyber-physical systems that focuses on enforcing point-in-time set-membership coordination constraints among the subsystem evolutions. The proposed scheme extends previous solutions by allowing the handling of time-varying dynamic interconnections, including the online addition/removal of subsystems (plug-and-play) during normal system operations. This approach ensures global coordination of the subsystems while effe...
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作者：Gallegos, Javier A.; Schlotterbeck, Constanza; Nunez, Felipe
作者单位：Pontificia Universidad Catolica de Chile
摘要：Average consensus is a fundamental problem in distributed control that still lacks a general solution when the agents face nonideal conditions and uncertain environments. This note contributes to the topic by addressing average consensus in networks of agents that: 1) interact over a time-varying and nonbalanced environment and 2) face parametric and nonparametric disturbances. It is shown that an adaptive strategy, which combines surplus variables and virtual agents, effectively solves the ex...
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作者：Lin, Li-Yu; Goppert, James; Hwang, Inseok
作者单位：Purdue University System; Purdue University
摘要：In this article, we use the derivative of the exponential map to derive the exact evolution of the logarithm of the tracking error for mixed-invariant systems, a class of systems capable of describing rigid body tracking problems in Lie groups. In addition, we design a log-linear dynamic inversion-based control law to remove the nonlinearities due to spatial curvature and enhance the robustness of the controller. We apply linear matrix inequalities to bound the tracking error given a bounded d...
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作者：Sasahara, Hampei; Sandberg, Henrik
作者单位：Institute of Science Tokyo; Tokyo Institute of Technology; Royal Institute of Technology
摘要：This article addresses the question whether model knowledge can guide a defender to appropriate decisions, or not, when an attacker intrudes into control systems. The model-based defense scheme considered in this study, namely Bayesian defense mechanism, chooses reasonable reactions through observation of the system's behavior using models of the system's stochastic dynamics, the vulnerability to be exploited, and the attacker's objective. On the other hand, rational attackers take deceptive s...
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作者：Bhan, Luke; Shi, Yuanyuan; Krstic, Miroslav
作者单位：University of California System; University of California San Diego
摘要：We introduce a framework for eliminating the computation of controller gain functions in partial differential equation (PDE) control. We learn the nonlinear operator from the plant parameters to the control gains with a (deep) neural network. We provide closed-loop stability guarantees (global exponential) under an neural network (NN)-approximation of the feedback gains. While, in the existing PDE backstepping, finding the gain kernel requires (one offline) solution to an integral equation, th...
