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作者：Wang, Yongqiang; Poor, H. Vincent
作者单位：Clemson University; Princeton University
摘要：Decentralized stochastic optimization is the basic building block of modern collaborative machine learning, distributed estimation and control, and large-scale sensing. Since involved data usually contain sensitive information like user locations, healthcare records, and financial transactions, privacy protection has become an increasingly pressing need in the implementation of decentralized stochastic optimization algorithms. In this article, we propose a decentralized stochastic gradient des...
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作者：de Rozario, Robin; Oomen, Tom
作者单位：Eindhoven University of Technology
摘要：Iterative learning control (ILC) enables substantial performance improvement by using past operational data in combination with approximate plant models. The aim of this article is to develop an ILC framework based on nonparametric frequency response function (FRF) models that requires very limited modeling effort. These FRF models describe the behavior of a system in periodic steady state, yet are employed for the control of arbitrary finite-length tasks. A detailed analysis and design framew...
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作者：Kolar, Bernd; Diwold, Johannes; Schoeberl, Markus
作者单位：Johannes Kepler University Linz
摘要：In this article, we show that the flatness of a nonlinear discrete-time system can be checked by computing a unique sequence of involutive distributions. The well-known test for static feedback linearizability is included as a special case. Since the computation of the sequence of distributions requires only the solution of algebraic equations, it allows an efficient implementation in a computer algebra program. In case of a positive result, a flat output can be obtained by straightening out t...
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作者：Monnoyer de Galland, Charles; Hendrickx, Julien M.
摘要：We derive fundamental performance limitations for intrinsic average consensus problems in open multi-agent systems, which are systems subject to frequent arrivals and departures of agents. Each agent holds a value, and the objective of the agents is to collaboratively estimate the average of the values of the agents presently in the system. Algorithms solving such problems in open systems are poised to never converge because of the permanent variations in the composition, size, and objective p...
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作者：Zhang, Qirui; Liu, Kun; Han, Dongyu; Su, Guangzhen; Xia, Yuanqing
作者单位：Beijing Institute of Technology
摘要：This article investigates the design of stealthy deception attacks with the aim of destroying the estimate performance without knowing the filter gain. The residual used to detect attacks is generated by the parity space approach and the Kullback-Leibler divergence is adopted as the metric of stealthiness. We first give the necessary and sufficient condition for the inexistence of the strictly stealthy attack, which does not change the residual and can lead to unbounded estimate error. When th...
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作者：Zhou, Panpan; Chen, Ben M.
作者单位：Chinese University of Hong Kong
摘要：Motivated by the fact that physical systems are usually subject to actuator position and rate saturation, we consider in this article the semiglobal leader-following output consensus problem of a group of discrete-time heterogeneous linear systems with position and rate-limited actuators by output feedback control law. Distributed observers are designed for followers to estimate the state of the leader and the follower itself, based on which a novel distributed control law is proposed. We show...
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作者：Maghenem, Mohamed; Sanfelice, Ricardo G.
作者单位：Communaute Universite Grenoble Alpes; Institut National Polytechnique de Grenoble; Universite Grenoble Alpes (UGA); Centre National de la Recherche Scientifique (CNRS); University of California System; University of California Santa Cruz
摘要：This article presents converse theorems for safety in terms of barrier functions for unconstrained continuous-time systems modeled as differential inclusions. Via a counterexample, we show the lack of existence of autonomous and continuous barrier functions certifying safety for a nonlinear system that is not only safe but also has a smooth right-hand side. Guided by converse Lyapunov theorems for (nonasymptotic) stability, time-varying barrier functions and appropriate infinitesimal condition...
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作者：Majumdar, Rupak; Schmuck, Anne-Kathrin
摘要：In this article, we present a new algorithm to solve the supervisory control problem over nonterminating processes modeled as $\omega$-regular automata. A solution to this problem was obtained by Thistle in 1995, which uses complex manipulations of automata. We show a new solution to the problem through a reduction to obliging games, which, in turn, can be reduced to $\omega$-regular reactive synthesis. Therefore, our reduction results in a symbolic algorithm based on manipulating sets of stat...
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作者：Aghbolagh, Hassan Dehghani; Ye, Mengbin; Zino, Lorenzo; Chen, Zhiyong; Cao, Ming
作者单位：University of Newcastle; Curtin University; University of Groningen; Polytechnic University of Turin; University of Groningen
摘要：Empirical studies suggest a deep intertwining between opinion formation and decision-making processes, but these have been treated as separate problems in the study of dynamical models for social networks. In this article, we bridge the gap in the literature by proposing a novel coevolutionary model, in which each individual selects an action from a binary set and has an opinion on which action they prefer. Actions and opinions coevolve on a two-layer network. For homogeneous parameters, undir...
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作者：Bachelier, Olivier; Cluzeau, Thomas; Rigaud, Alexandre; Alvarez, Francisco Jose Silva; Yeganefar, Nader; Yeganefar, Nima
作者单位：Ecole Nationale Superieure de Mecanique et d'Aerotechnique (ISAE-ENSMA); Universite de Poitiers; Universite de Limoges; Centre National de la Recherche Scientifique (CNRS); CNRS - Institute for Engineering & Systems Sciences (INSIS); Aix-Marseille Universite; Centre National de la Recherche Scientifique (CNRS)
摘要：In this article, we review different stability definitions that have been used in the literature concerning 2-D Roesser or Fornasini-Marchesini models: structural stability, asymptotic stability, and two different notions of exponential stability. We clarify the relations between all these definitions for the linear case: the two notions of exponential stability and structural stability are all equivalent and they imply asymptotic stability.
