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作者：Ghadiri-Modarres, Mohammadali; Mojiri, Mohsen
作者单位：Isfahan University of Technology
摘要：A suitable normalization technique is introduced to improve the robustness properties of the conventional perturbation-based extremum seeking (ES). Following practical stability analysis, an appropriate expression is found for the normalization signal in the proposed normalized ES. Application of the proposed scheme in the source localization with nonholonomic unicycle has an additional advantage of ensuring that forward and angular velocities of the unicycle have a priori known bounds.
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作者：Zhu, Guanghui; Feng, Lei; Li, Zhiwu; Wu, Naiqi
作者单位：Macau University of Science & Technology; Macau University of Science & Technology; Centre National de la Recherche Scientifique (CNRS); Aix-Marseille Universite; Royal Institute of Technology; Xidian University; Guangdong University of Technology
摘要：In this article, we present a fault diagnosis approach for discrete event systems using labeled Petri nets. In contrast to the existing works, a new fault class containing all the fault transitions is additionally introduced in the diagnosis function, leading to a more informative and precise diagnosis result. An integer linear programming (ILP) problem is built according to an observed word. By specifying different objective functions to the ILP problem, the diagnosis result is obtained witho...
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作者：Alves, Marcos V. S.; Carvalho, Lilian K.; Basilio, Joao Carlos
作者单位：Universidade Federal do Rio de Janeiro
摘要：In this article, we study the supervisory control problem of networked discrete event systems with timing structure assuming bounded communication delays and intermittent loss of observations. The communication between the plant and the supervisor is through a network that can have several channels, and so communication delays may change the order of event observations by the supervisor. We assume a priori knowledge of the minimal activation time of the plant transitions and the maximum commun...
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作者：Wu, Chengshuai; van der Schaft, Arjan; Chen, Jian
作者单位：Zhejiang University; Zhejiang University; University of Groningen
摘要：In this article, stabilization of port-Hamiltonian (pH) systems is studied in the context of shifted passivity. The pH systems, in general, are not shifted passive with respect to the given Hamiltonian and output. Therefore, we consider enforcing the property of shifted passivity by designing a state feedback, namely, shifted passivity via feedback. This introduced concept brings more insight into the stabilization of pH systems, and a set of partial differential equations is derived such that...
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作者：Griffioen, Paul; Weerakkody, Sean; Sinopoli, Bruno
作者单位：Carnegie Mellon University; Washington University (WUSTL)
摘要：This article considers the design and analysis of multiple moving target defenses for recognizing and isolating attacks on cyber-physical systems. We consider attackers who perform integrity attacks on some set of sensors and actuators in a control system. In such cases, it has been shown that a model aware adversary can carefully design attack vectors to bypass bad data detection and identification filters while causing damage to the control system. To counter such an attacker, we propose the...
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作者：Rey, Felix; Hokayem, Peter; Lygeros, John
作者单位：Boston Consulting Group (BCG); Swiss Federal Institutes of Technology Domain; ETH Zurich
摘要：We consider a model predictive control setting, where we use the alternating direction method of multipliers (ADMM) to exploit problem structure. We take advantage of interacting components in the controlled system by decomposing its dynamics with virtual subsystems and virtual inputs. We introduce subsystem-individual penalty parameters together with optimal selection techniques. Further, we propose a novel measure of system structure, which we call separation tendency. For a sufficiently str...
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作者：Ye, Lintao; Woodford, Nathaniel; Roy, Sandip; Sundaram, Shreyas
作者单位：Purdue University System; Purdue University; Washington State University
摘要：Given a linear dynamical system affected by stochastic noise, we consider the problem of selecting an optimal set of sensors (at design time) to minimize the trace of the steady-state a priori or a posteriori error covariance of the Kalman filter, subject to certain selection budget constraints. We show the fundamental result that there is no polynomial-time constant-factor approximation algorithm for this problem. This contrasts with other classes of sensor selection problems studied in the l...
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作者：Alexandru, Andreea B.; Gatsis, Konstantinos; Shoukry, Yasser; Seshia, Sanjit A.; Tabuada, Paulo; Pappas, George J.
作者单位：University of Pennsylvania; University of Oxford; University of California System; University of California Irvine; University of California System; University of California Berkeley; University of California System; University of California Los Angeles
摘要：This article develops a cloud-based protocol for a constrained quadratic optimization problem involving multiple parties, each holding private data. The protocol is based on the projected gradient ascent on the Lagrange dual problem and exploits partially homomorphic encryption and secure communication techniques. Using formal cryptographic definitions of indistinguishability, the protocol is shown to achieve computational privacy. We show the implementation results of the protocol and discuss...
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作者：Alaviani, Seyyed Shaho; Elia, Nicola
作者单位：Iowa State University; Clemson University; University of Minnesota System; University of Minnesota Twin Cities
摘要：This article considers the problem of solving linear algebraic equations of the form Ax=b among multiagents, which seek a solution by using local information in presence of random communication topologies. The equation is solved by m agents where each agent only knows a subset of rows of the partitioned matrix [A,b]. The problem is formulated such that this formulation does not need the distribution of random interconnection graphs. Therefore, this framework includes asynchronous updates and/o...
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作者：Belgioioso, Giuseppe; Nedic, Angelia; Grammatico, Sergio
作者单位：Eindhoven University of Technology; Arizona State University; Arizona State University-Tempe; Delft University of Technology
摘要：We design the first fully distributed algorithm for generalized Nash equilibrium seeking in aggregative games on a time-varying communication network, under partial-decision information, i.e., the agents have no direct access to the aggregate decision. The algorithm is derived by integrating dynamic tracking into a projected pseudo-gradient algorithm. The convergence analysis relies on the framework of monotone operator splitting and the Krasnosel'skii-Mann fixed-point iteration with errors.
