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作者：Xie, Antai; Wang, Xiaofan; Yang, Wen; Cao, Ming; Ren, Xiaoqiang
作者单位：Shanghai University; East China University of Science & Technology; University of Groningen; Shanghai University
摘要：This article studies privacy-preserving problems focusing on the information that is available to the attacker. For a class of general linear average consensus algorithms, we identify the least information set required by an attacker to infer the initial value of the target node. We then propose a novel algorithm that protects the initial value effectively if the attacker fails to have this least information. Furthermore, we show that the initial value of nodes may be disclosed even if the att...
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作者：Boussaada, Islam; Mazanti, Guilherme; Niculescu, Silviu-Iulian; Michiels, Wim
作者单位：Universite Paris Saclay; Inria; Centre National de la Recherche Scientifique (CNRS); KU Leuven
摘要：This article focuses on a spectral property for linear time-invariant dynamical systems represented by delay-differential equations (DDEs) entitled multiplicity-induced-dominancy (MID), which consists, roughly speaking, in the spectral abscissa of the system being defined by a multiple spectral value. More precisely, we focus on the MID property for spectral values with overorder multiplicity, i.e., a multiplicity larger than the order of the DDE. We highlight the fact that a root of overorder...
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作者：Falconi, Lucia; Ferrante, Augusto
作者单位：University of Padua
摘要：In this article, we analyze strictly positive real and regular multiple-input-multiple-output (MIMO) systems. We consider small perturbations of such systems and characterize the perturbations' structure for which the perturbed system remains strictly positive real and regular. Both static and dynamical perturbation are considered. The general case where both the system and the perturbation are not necessarily rational is considered.
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作者：Jbara, Adam; Katz, Rami; Fridman, Emilia
作者单位：Tel Aviv University; University of Trento
摘要：In this article, we study, for the first time, the stability of linear delayed discrete-time systems with small parameter epsilon > 0 and rapidly varying coefficients. Recently, an efficient constructive approach to averaging-based stability via a novel delay-free transformation was introduced for continuous-time systems. Our paper extends this approach to discrete-time systems. We start by introducing a discrete-time change of variables that leads to a perturbed averaged system. By employing ...
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作者：Mao, Xiangyu; He, Jianping
作者单位：Shanghai Jiao Tong University
摘要：How to make a dynamic system unidentifiable is an important but still open issue. It not only requires that the parameters of the systems but also the equivalent systems cannot be identified by any identification approaches. Thus, it is a much more challenging problem than the existing analysis of parameter unidentifiability. In this article, we focus on the condition for dynamic unidentifiability for an arbitrarily parameterized system and design the controller to make the system dynamics uni...
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作者：Yan, Jing; Lin, Jingsheng; Yang, Xian; Chen, Cailian; Guan, Xinping
作者单位：Yanshan University; Shanghai Jiao Tong University
摘要：Detection and tracking of underwater target play an important role in enhancing the marine sensing ability. Currently, the above mission is usually conducted in a single platform, and there is a lack of necessary cooperation between different platforms. This article employs unmanned aerial/surface/underwater vehicles (UAV-USV-UUV) to develop a cooperation detection and tracking solution for underwater target. We first use the measure theory to construct a heterogeneous detection mode, such tha...
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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...
