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作者：Ren, Hao; Ma, Yajie; Jiang, Bin; Polycarpou, Marios M.; Panayiotou, Christos
作者单位：Nanjing University of Aeronautics & Astronautics; University of Cyprus; University of Cyprus
摘要：This article presents a distributed fault-tolerant control design for nonlinear second-order multiagent systems affected by communication faults caused by malicious cyber-attacks or intentional interference. The approach is implemented in two steps. First, a zero-sum differential game framework is established, where virtual controllers and fault-induced biases are treated as opposing players, minimizing and maximizing cost functions related to local tracking performance and fault tolerance. Se...
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作者：Chaffey, Thomas; Kharitenko, Andrey; Forni, Fulvio; Sepulchre, Rodolphe
作者单位：University of Sydney; University of Cambridge; Swiss Federal Institutes of Technology Domain; ETH Zurich; KU Leuven
摘要：A theorem is proved to verify incremental stability of a feedback system via a homotopy from a known incrementally stable system, making no assumptions on the existence of an extended space, well-posedness, or causality. A first corollary of that result is that incremental stability may be verified by separation of scaled relative graphs, correcting two assumptions in (Chaffey et al., 2023, Thm. 2). Necessity of this correction is demonstrated by example. A second corollary provides an increme...
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作者：Wang, Yuhan; Zhao, Xudong; Xing, Wei; Li, Yuzhe; Wang, Bohui
作者单位：Dalian University of Technology; Hainan University; Northeastern University - China
摘要：In this article, the security issue of remote state estimation in cyber-physical systems (CPSs) for multihop networks is investigated. A smart sensor transmits its local estimate to a remote estimator through some relay nodes to save limited energy while facing the threat of a malicious Denial-of-Service (DoS) attacker. Due to the energy constraints, the defender allocates transmitting energy on each channel to minimize the estimation error, while the attacker selects the attacking energy impl...
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作者：Yuan, Liwei; Ishii, Hideaki
作者单位：Hunan University; University of Tokyo
摘要：In this article, we study resilient distributed economic dispatch in smart grids where some of the agents are compromised by attackers. The objective is to distributively compute the optimal power generation amount of each normal agent such that the balance between power generation and demand is satisfied within all normal agents despite the erroneous effects from malicious agents. To this end, we propose a novel algorithm for smart grids with directed communication topologies. Our algorithm d...
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作者：Zhang, Kang-Kang; Zhou, Bin; Lam, James
作者单位：KU Leuven; University of Hong Kong; Harbin Institute of Technology
摘要：In this article, the global control problem for a chained nonholonomic system composed of a scalar subsystem and a bilinear chain of integrators with input delays is solved. For the scalar subsystem, a finite-dimensional periodic delayed feedback is constructed and the closed form of the controller is given explicitly. With the aid of a smooth linear time-varying state transformation, the bilinear chain of integrators subsystem is re-expressed as a linear time-varying system with input delay. ...
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作者：Zhang, Bin; Ren, Yingying; Ding, Da-Wei
作者单位：University of Science & Technology Beijing
摘要：This technical note investigates the optimal tracking and regulation performance of networked control systems (NCSs) with time delay and input quantization. To this end, advanced tradeoff performance indices for multi-input multi-output systems are first proposed, aiming to identify new design constraints beyond those imposed by known limitations, such as unstable poles (UPs) and nonminimum phase zeros (NMPZs). Then, some analytical expressions of optimal tracking and regulation performance ar...
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作者：Huan, Mingchen; Li, Chuandong; Hu, Xiang
作者单位：Southwest University - China
摘要：In this article, we address a class of differential games where one player utilizes piecewise continuous control strategy, while the other player employs event-triggered impulses. This article considers scenarios where impulses act as control inputs or as disturbances, and the theoretical framework we propose is applicable to both zero-sum and nonzero-sum differential games. By employing discontinuous steady-state Hamilton-Jacobi-Isaacs (HJI) equations and constructing Lyapunov functions, we e...
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作者：Wu, Xuyang; Liu, Changxin; Magnusson, Sindri; Johansson, Mikael
作者单位：Southern University of Science & Technology; East China University of Science and Technology; Stockholm University; Royal Institute of Technology
摘要：Existing asynchronous distributed optimization algorithms often use diminishing step-sizes that cause slow practical convergence, or use fixed step-sizes that depend on and decrease with an upper bound of the delays. Not only are such delay bounds hard to obtain in advance, but they also tend to be large and rarely attained, resulting in unnecessarily slow convergence. This article develops asynchronous versions of two distributed algorithms, Prox-DGD and DGD-ATC, for solving consensus optimiz...
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作者：Cao, Runhua; Zhao, Yu; Liu, Yongfang; Huang, Panfeng
作者单位：Northwestern Polytechnical University; Northwestern Polytechnical University
摘要：This article addresses the design problem of the privacy-protected and prescribed-time dynamic average consensus (DAC) algorithm over possibly unbalanced directed networks-the most general and most challenging case from the perspective of typologies, which has been rarely studied in existing literature. First, by developing an integral surplus-based prescribed-time control framework, a prescribed-time DAC algorithm is designed over unbalanced directed networks, which allows all agents to achie...
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作者：Zhang, Zhixin; Chen, Zhiyong; Fang, Wentuo
作者单位：Central South University; University of Newcastle
摘要：This article investigates the consensus of discrete-time high-dimensional multiagent systems, where the Euclidean norm of the consensus error between neighboring agents is subject to transient performance constraints. Transient performance constraints are widely prevalent in practical systems due to considerations, such as safety and optimal functionality. However, existing research on constrained discrete-time systems is limited. In this study, the constrained quantity is the Euclidean norm o...
