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作者：Bajodek, Mathieu; Gouaisbaut, Frederic; Seuret, Alexandre
作者单位：Universite de Toulouse; Universite Toulouse III - Paul Sabatier; Centre National de la Recherche Scientifique (CNRS)
摘要：Recently, necessary conditions of stability for time-delay systems based on the handling of the Lyapunov-Krasovskii functional have been studied in the literature giving rise to a new paradigm. Interestingly, the necessary condition for stability developed by Gomez et al. has been proven to be sufficient. It is presented as a simple positivity test of a matrix issued from the Lyapunov matrix. This article proposes an extension of this result, where the uniform discretization of the state has b...
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作者：Xie, Xiaotian; Katselis, Dimitrios; Beck, Carolyn L.; Srikant, R.
作者单位：Central South University; University of Illinois System; University of Illinois Urbana-Champaign; University of Illinois System; University of Illinois Urbana-Champaign
摘要：We consider a discrete-time dynamical system over a discrete state-space, which evolves according to a structured Markov model called Bernoulli autoregressive (BAR) model. Our goal is to obtain sample complexity bounds for the problem of estimating the parameters of this model using an indirect maximum likelihood estimator. Our sample complexity bounds exploit the structure of the BAR model and are established using concentration inequalities for random matrices and Lipschitz functions.
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作者：Shali, Brayan M.; van der Schaft, Arjan; Besselink, Bart
作者单位：University of Groningen; University of Groningen
摘要：The growing complexity of modern engineering systems necessitates a method for design and analysis that is inherently modular. Methods based on using contracts for system design have successfully tackled this issue for a variety of system classes, but mostly in the context of discrete software systems. Motivated by this, we present assume-guarantee contracts for continuous linear dynamical systems with inputs and outputs. Such contracts serve as system specifications through two aspects. The a...
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作者：Uribe-Murcia, Karen J.; Shmaliy, Yuriy S.
作者单位：Universidad de Guanajuato
摘要：The robust unbiased finite impulse response (UFIR) filter is developed for wireless sensor networks with multistep random delays and multiple dropouts. The problem is solved by converting a model with delays to another without delays. Experimental testing is provided by Global Positioning System-based vehicle tracking with randomly delayed data, using the standard Kalman filter (KF) and game theory H-infinity filter as benchmarks. It is shown that the UFIR filter is the most robust to uncertai...
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作者：Zhao, Zhengen; Xu, Yunsong; Li, Yuzhe; Zhen, Ziyang; Yang, Ying; Shi, Yang
作者单位：Nanjing University of Aeronautics & Astronautics; National University of Defense Technology - China; Northeastern University - China; Peking University; University of Victoria
摘要：This article studies the issues of data-driven attack detection and identification for cyber-physical systems under sparse sensor attacks. First, based on the available input and output datasets, a data-driven monitor is formulated with the following two objectives: attack detection and attack identification. Then, with the subspace approach, a data-driven attack detection policy is presented, wherein the attack detector is designed directly by the process data. A subspace projection-based att...
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作者：De Persis, Claudio; Rotulo, Monica; Tesi, Pietro
作者单位：University of Groningen; University of Groningen; University of Florence
摘要：In this article, we introduce a method to deal with the data-driven control design of nonlinear systems. We derive conditions to design controllers via (approximate) nonlinearity cancelation. These conditions take the compact form of data-dependent semidefinite programs. The method returns controllers that can be certified to stabilize the system even when data are perturbed and disturbances affect the dynamics of the system during the execution of the control task, in which case an estimate o...
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作者：Conte, Giuseppe; Perdon, Anna Maria; Zattoni, Elena
作者单位：Marche Polytechnic University; University of Bologna
摘要：The fault detection and isolation problem is considered in the context of switching linear systems. The problem is tackled by searching for suitable residual signal generators, whose existence is completely characterized in structural terms. Both the situation in which the initial condition of the system subject to possible faults is known and that in which it is not known are considered. The results are compared with those found in the classical linear case for the same problem using a struct...
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作者：Wang, Bohui; Shen, Chao
作者单位：Xi'an Jiaotong University
摘要：This study focuses on the time-varying observer design for the synchronization of heterogeneous nonlinear cyber-physical systems, where each subsystem can be modeled by an agent, and the information flow among the subsystems can be regarded as the interactions among the agents. To achieve the synchronization behaviors, a novel estimation and compensation mechanism based on time-varying observers, for the first time, is proposed. The mechanism can reveal the influence of equilibrium points on t...
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作者：Zucco, Jesus Pablo Toledo; Ramirez, Hector; Wu, Yongxin; Le Gorrec, Yann
作者单位：National Office for Aerospace Studies & Research (ONERA); Universidad Tecnica Federico Santa Maria; Universite Marie et Louis Pasteur; Universite de Technologie de Belfort-Montbeliard (UTBM); Centre National de la Recherche Scientifique (CNRS)
摘要：The design of an observer-based state feedback controller with guaranteed passivity properties for port-Hamiltonian systems (PHS) is addressed using linear matrix inequalities (LMIs). The observer gain is freely chosen and the LMIs conditions such that the state feedback is equivalent to control by interconnection with an input strictly passive and/or an output strictly passive and zero-state detectable port-Hamiltonian controller are established. It is shown that the proposed controller expon...
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作者：Wang, Le Yi; Yin, George; Lin, Feng; Polis, Michael P.; Chen, Wen
作者单位：Wayne State University; University of Connecticut; Wayne State University; Oakland University; Wayne State University
摘要：This article investigates the problem of joint continuous and discrete state estimation of randomly switched linear systems in which subsystems may not be observable. Estimation of both continuous state and discrete sequence simultaneously based on the same output observations is a challenging task that is inherently nonlinear and often infinite dimensional. This article presents necessary and sufficient conditions when joint estimation is possible without using a probing input. When such cond...
