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作者：Firouzbahrami, Majid; Nobakhti, Amin
作者单位：Sharif University of Technology
摘要：In this article, we address a constraint-coupled optimization problem over multiagent network systems with communication time delays and unknown disturbances. The primary objective is to minimize the sum of local cost functions while adhering to both local and global constraints, the latter encompassing subsets of all decision variables. The local costs are not required to be strictly or strongly convex, as long as they are convex. Utilizing a Lyapunov approach and linear matrix inequalities, ...
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作者：Kawano, Yu; Hosoe, Yohei
作者单位：Hiroshima University; Kyoto University
摘要：In this article, we examine the role of differential positivity in the contraction analysis of discrete-time nonlinear systems with parameters that follow stochastic processes. We investigate the concept of almost sure differential positivity, which parallels the positivity of linear systems, and utilize it to derive vector-type sufficient conditions for uniform incremental exponential stability in the first moment. Employing these conditions, we demonstrate that network stability analysis can...
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作者：Lee, Junsoo; Haddad, Wassim M.; Lanchares, Manuel
作者单位：University of South Carolina System; University of South Carolina Columbia; University System of Georgia; Georgia Institute of Technology
摘要：This note provides corrections to the statements and proofs of Lemma 4.2 and Theorem 4.1 in (Lee et al., 2023). It also discusses how the statements of the remaining theorems should be adjusted in light of the correction made to Theorem 4.1.
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作者：Lu, Yiwen; Mo, Yilin
作者单位：Tsinghua University
摘要：The linear-quadratic regulation (LQR) problem with unknown system parameters has been widely studied, but it has remained unclear whether O-similar to(root T) regret, which is the best known dependence on time, can be achieved almost surely. In this article, we propose an adaptive LQR controller with almost surely O-similar to(root T) regret upper bound. The controller features a circuit-breaking mechanism, which falls back to a known stabilizing controller when the input signal or control gai...
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作者：Siriya, Seth; Chen, Mo; Pu, Ye
作者单位：Leibniz University Hannover; Simon Fraser University; University of Melbourne
摘要：When deploying autonomous systems in unknown and changing environments, it is critical that their motion planning and control algorithms are computationally efficient and can be reapplied online in real time, while providing theoretical safety guarantees in the presence of disturbances. The satisfaction of these objectives becomes more challenging when considering time-varying dynamics and disturbances, which arise in real-world contexts. We develop methods with the potential to address these ...
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作者：Shang, Jun; Li, Yuzhe; Chen, Tongwen
作者单位：Tongji University; Tongji University; Northeastern University - China; University of Alberta
摘要：This article investigates stealthy attacks on sampled-data control systems, where a continuous process is sampled periodically, and the resultant discrete output and control signals are transmitted through dual channels in wireless communication networks. Acknowledging the vulnerability of these transmitted data to cyber threats, we analyze two types of stealthy attacks that compromise either one or both channels. We explicitly present the necessary and sufficient conditions for the existence ...
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作者：Wang, Jiamin; Liu, Jian; Xiao, Feng; Zheng, Yuanshi
作者单位：Xidian University; North China Electric Power University
摘要：It has been reported that local memory information could enhance certain consensus performance of multiagent networks, such as protecting privacy and accelerating consensus. This article aims to investigate whether memory information can improve the robustness and scalability of consensus networks. The robustness is measured by the & ell;(2) gains from disturbances to consensus errors, and the scalability means that consensus can be preserved without retuning control parameters as the network ...
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作者：Chen, Jianing; Li, Yuxuan; Xue, Yuhan; Qin, Sitian
作者单位：Harbin Institute of Technology; Harbin Institute of Technology
摘要：The noncooperative game with private constraints is studied, where heterogeneous players communicate over a weight-unbalanced digraph. A novel distributed Nash equilibrium (NE) seeking algorithm is adapted for this problem tackling two main difficulties. First, the presence of the unbalanced digraph disrupts some essential properties of the Laplacian matrix. To overcome this limitation, a compensation mechanism based on output feedback is introduced. Second, to ensure players' actions meet the...
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作者：Taylor, Joshua A.; Dominguez-Garcia, Alejandro D.
作者单位：New Jersey Institute of Technology; University of Illinois System; University of Illinois Urbana-Champaign
摘要：We study auxiliary signal-based fault detection in static linear systems with quadratic constraints. Auxiliary signals are perturbations that make faults easier to detect, at the cost of some disruption to normal operation. In this article, we find minimally disruptive auxiliary signals that guarantee detection under set-based uncertainty. Our motivation is distance protection in inverter-dominated power systems, wherein small fault currents can go undetected by traditional schemes. We focus o...
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作者：Wang, Youqing; Li, Ying; Parisini, Thomas; Zhao, Dong
作者单位：Beijing University of Chemical Technology; Imperial College London; University of Trieste; Beihang University
摘要：We address a distributed adaptive control methodology for nonlinear interconnected systems possibly affected by replay cyber-attacks. In the framework of adaptive approximation, the distributed controller and parameter estimator are designed by exploiting a backstepping approach. The stability of the attacked distributed control system is analyzed, where both the local replay attack and neighboring attack propagation effects are simultaneously considered. To quantify the resilience of the inte...
