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作者：Augier, Nicolas; Chaves, Madalena; Gouze, Jean-Luc
作者单位：Sorbonne Universite; Inria; Universite Cote d'Azur; Centre National de la Recherche Scientifique (CNRS)
摘要：In this article, we investigate the emergent dynamics in a network of N coupled cells, each expressing a similar genetic bistable switch. The bistable switch is modeled as a piecewise affine system and the cells are diffusively coupled. We show that both the coupling topology and the strength of the diffusion parameter may introduce new steady-state patterns in the network. We study the synchronization properties of the coupled network and, using a control set of only three possible values (u(...
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作者：Lv, Maolong; De Schutter, Bart; Cao, Jinde; Baldi, Simone
作者单位：Air Force Engineering University; Delft University of Technology; Southeast University - China; Yonsei University
摘要：Practical tracking results have been reported in the literature for high-order odd-rational-power nonlinear dynamics (a chain of integrators whose power is the ratio of odd integers). Asymptotic tracking remains an open problem for such dynamics. This note gives a positive answer to this problem in the framework of prescribed performance control, without approximation structures (neural networks, fuzzy logic, etc.) being involved in the control design. The unknown system uncertainties are firs...
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作者：Suttner, Raik
作者单位：University of Wurzburg
摘要：We present a novel extremum-seeking method for affine connection mechanical control systems. The proposed control law involves periodic perturbation signals with sufficiently large amplitudes and frequencies. A suitable averaging analysis reveals that the solutions of the closed-loop system converge locally uniformly to the solutions of an averaged system in the large-amplitude high-frequency limit. This in turn leads to the effect that stability properties of the averaged system carry over to...
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作者：Yazdani, Kasra; Jones, Austin; Leahy, Kevin; Hale, Matthew
作者单位：State University System of Florida; University of Florida; Massachusetts Institute of Technology (MIT); Lincoln Laboratory
摘要：As multi-agent systems proliferate and more user data, new approaches are needed to protect sensitive data while still enabling system operation. To address this need, this article presents a private multiagent LQ control framework. Agents' state trajectories can be sensitive, and we therefore protect them using differential privacy. We quantify the impact of privacy along three dimensions: the amount of information shared under privacy, the control-theoretic cost of privacy, and the tradeoffs...
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作者：Alamo, Teodoro; Krupa, Pablo; Limon, Daniel
作者单位：University of Sevilla
摘要：Accelerated first-order methods, also called fast gradient methods, are popular optimization methods in the field of convex optimization. However, they are prone to suffer from oscillatory behavior that slows their convergence when medium to high accuracy is desired. In order to address this, restart schemes have been proposed in the literature, which seek to improve the practical convergence by suppressing the oscillatory behavior. This article presents a restart scheme for accelerated first-...
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作者：Jeeninga, Mark; De Persis, Claudio; van der Schaft, Arjan
作者单位：Polytechnic University of Turin; University of Groningen
摘要：In this two-part article, we develop a unifying framework for the analysis of the feasibility of the power flow equations for dc power grids with constant-power loads. Part II of this article, explores further implications of the results in Part I. We present a necessary and sufficient linear matrix inequality (LMI) condition for the feasibility of a vector of power demands (under small perturbation), which extends a necessary condition in the literature. The alternatives of these LMI conditio...
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作者：Rios, Hector; Franco, Roberto; Ferreira de Loza, Alejandra; Efimov, Denis
作者单位：Consejo Nacional de Ciencia y Tecnologia (CONACyT); Instituto Politecnico Nacional - Mexico; Inria; Universite de Lille; Centre National de la Recherche Scientifique (CNRS)
摘要：A high-order sliding-mode adaptive observer is proposed to solve the problem of an adaptive estimation, i.e., the simultaneous estimation of the state and parameters, for a class of uncertain nonlinear systems in the presence of external disturbances, which do not need to satisfy a relative degree condition equal to one. This approach is based on a high-order sliding-mode observer and a nonlinear parameter identification algorithm. The practical, global, and uniform asymptotic stability of the...
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作者：Benenati, Emilio; Ananduta, Wicak; Grammatico, Sergio
作者单位：Delft University of Technology
摘要：A fundamental open problem in monotone game theory is the computation of a specific generalized Nash equilibrium (GNE) among all the available ones, e.g., the optimal equilibrium with respect to a system-level objective. The existing GNE seeking algorithms have in fact convergence guarantees toward an arbitrary, possibly inefficient, equilibrium. In this article, we solve this open problem by leveraging results from fixed-point selection theory and in turn derive distributed algorithms for the...
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作者：Fritz, Raphael; Zhang, Ping
摘要：The widespread use of cyber-physical systems not only brings new opportunities with it but also introduces the risk of cyberattacks on the system. One of the most dangerous and sophisticated types of attacks are the stealthy attacks that can hide their influence and are not detectable by conventional anomaly detection schemes. In this article, a detection method for the replay attack and the covert attack on discrete event systems is proposed. Unexpected behavior is introduced into the transmi...
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作者：Lavaei, Abolfazl; Soudjani, Sadegh; Frazzoli, Emilio
作者单位：Newcastle University - UK; Swiss Federal Institutes of Technology Domain; ETH Zurich
摘要：This work is concerned with a compositional data-driven approach for formal safety verification of large-scale continuous-time dynamical systems with unknown models. The proposed framework enjoys the interconnection matrix and joint dissipativity-type properties of subsystems, described by the notion of stochastic storage certificates. In the first part of the paper, we cast the required conditions for constructing storage certificates as a robust optimization program (ROP). Since the proposed...
