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作者：Jafarpour, Saber; Liu, Zishun; Chen, Yongxin
作者单位：University of Colorado System; University of Colorado Boulder; University System of Georgia; Georgia Institute of Technology
摘要：We address the reachability problem for continuous-time stochastic dynamic systems. Our objective is to present a unified framework that characterizes the reachable set of a dynamic system in the presence of both stochastic disturbances and deterministic disturbances. To achieve this, we devise a strategy that decouples the effects of deterministic disturbances and stochastic disturbances on the reachable sets of the system. For the deterministic part, we demonstrate that existing reachability...
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作者：Voulgaris, Petros G.; Elia, Nicola
作者单位：Nevada System of Higher Education (NSHE); University of Nevada Reno; University of Minnesota System; University of Minnesota Twin Cities
摘要：this article, we take an input-output approach to expand the study of cooperative multiagent optimization problems that admit decentralized and selfish solutions. We extend the results of our previous work on problems with identical agents to nonidentical agents and demonstrate that for the H(infinity )and H-2 norm minimization, the optimal controller is decentralized and selfish as the number of agents n grows to infinity, provided a uniform boundedness condition on the open loop of the colle...
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作者：Wan, Liheng; Li, Panshuo; Lam, James
作者单位：Guangdong University of Technology; Guangdong University of Technology; University of Hong Kong
摘要：This article proposes an online cross-layered defense strategy for multichannel systems with switched dynamics under DoS attacks. The enabling condition of a channel under attacks is formulated with respect to attack flow and channel bandwidth, then a new networked control system model bridging the gap between system dynamics and network deployment is built. Based on this, the cross-layered defense strategy is proposed. It jointly optimizes the controller gain and bandwidth allocation of chann...
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作者：Wan, Neng; Li, Dapeng; Hovakimyan, Naira; Voulgaris, Petros G.
作者单位：University of Illinois System; University of Illinois Urbana-Champaign; University of Illinois System; University of Illinois Urbana-Champaign; Southern University of Science & Technology; Nevada System of Higher Education (NSHE); University of Nevada Reno
摘要：Fundamental limitations or performance tradeoffs/limits are important properties and constraints of both control and filtering systems. Among various tradeoff metrics, total information rate that characterizes the sensitivity tradeoffs and time-averaged performance of control and filtering systems was conventionally studied by using the differential entropy rate and Kolmogorov-Bode formula. In this article, by extending the famous mutual information-minimum mean-square error (I-MMSE) relations...
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作者：Ju, Yanhao; Reis, Joel; Sun, Yuangong; Silvestre, Carlos
作者单位：Qilu University of Technology; Qilu University of Technology; University of Macau; University of Jinan; Universidade de Lisboa
摘要：In this technical note, we investigate the stability of discrete-time 2-D linear inhomogeneous systems. Specifically, we establish sufficient conditions that guarantee both asymptotic and exponential stability. Compared to existing results, the conditions presented here relax the requirement for the negative definiteness of differences in (piecewise) Lyapunov functions, allowing these functions to grow over certain periods. Numerical examples are provided to illustrate the theoretical findings.
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作者：Razaq, Muhammad Ahsan; Altafini, Claudio
作者单位：Linkoping University
摘要：The aim of this article is to investigate how opinions propagate in presence of stubborn behavior (i.e., agents that tend to defend their stance) and of signed (i.e., antagonistic) interactions among the agents. The stability properties of the resulting system, denoted signed Friedkin-Johnsen (SFJ) model, are studied in detail, and also the convergence to consensus for a concatenation of such SFJ models. A noteworthy feature of the SFJ model is that the opinion dynamics need not be confined to...
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作者：Alyaseen, Mohammed; Atanasov, Nikolay; Cortes, Jorge
作者单位：University of California System; University of California San Diego; Kuwait University
摘要：The existence of a control barrier function (CBF) for a control-affine system provides a powerful design tool to ensure safety. Any controller that satisfies the CBF condition and ensures that the trajectories of the closed-loop system are well defined makes the zero superlevel set forward invariant. Such a controller is referred to as safe. This article studies the regularity properties of the minimum-norm safe controller as a stepping stone toward the design of general continuous safe feedba...
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作者：Su, Fangxu; Zhang, Weihai; Wu, Panyu; Lv, Xiaoning
作者单位：Shandong University of Science & Technology; Shandong University
摘要：This article focuses on the analysis for stability of semi-Markov jump stochastic systems in pth moment sense. First of all, the extended system method is constructed, which can transform the analysis of semi-Markov jump stochastic systems in pth moment sense into the analysis of the extended systems. With the help of the extended system method, the necessary and sufficient conditions for stability in the even-order moment sense are derived. Finally, several examples are given to illustrate th...
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作者：Liu, Ze-Qiang; Liu, Zhi-Wei; He, Ding-Xin; Ye, Lintao; Chi, Ming
作者单位：Huazhong University of Science & Technology; Huazhong University of Science & Technology
摘要：We address the problem of resilient consensus in second-order multiagent networks (MANs) with a time-varying set of malicious agents. Existing research typically assumes a static set of malicious agents. However, in real-world scenarios, network attacks and recoveries may lead to dynamic changes in the roles of agents. To overcome this challenge, a novel adaptive weighted subsequence reduction (AWSR) is proposed for resilient consensus in MANs with a dynamic malicious agent set. Based on the A...
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作者：Mishra, Pankaj K.; Jagtap, Pushpak
作者单位：National Institute of Technology (NIT System); National Institute of Technology Hamirpur; Indian Institute of Science (IISC) - Bangalore
摘要：This article addresses the problem of tracking control for an unknown nonlinear system with time-varying bounded disturbance subjected to prescribed performance and input constraints (PIC). Since the simultaneous prescription of PIC involves a tradeoff, we propose an analytical feasibility condition to prescribe a feasible PIC, which also results in a feasible initial state set as a corollary. In addition, we propose an approximation-free controller to ensure the tracking performance meets the...
