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作者:Ferreira, Luis H. C.; Guaracy, Fernando H. D.
作者单位:Universidade Federal de Itajuba
摘要:This article presents an approach based on the Nyquist plot to analyze the mean-square stability of a networked control system in which data transmission is subject to the occur-rence of packet losses. This result is obtained by translating well-known linear matrix inequality (LMI) conditions for mean-square stability to conditions that take the form of upper bounds on the H8 norms of the sensitivity and complementary sensitivity trans-fer matrices. Although the results obtained provide only s...
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作者:Zhang, Qirui; Liu, Kun; Teixeira, Andre M. H.; Li, Yuzhe; Chai, Senchun; Xia, Yuanqing
作者单位:Beijing Institute of Technology; Uppsala University; Northeastern University - China
摘要:This article investigates the design of online stealthy attacks with the aim of moving the system's state to the desired target. Different from the design of offline attacks, which is only based on the system's model, to design the online attack, the attacker also estimates the system's state with the intercepted data at each instant and computes the optimal attack accordingly. To ensure stealthiness, the Kullback-Leibler divergence between the innovations with and without attacks at each inst...
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作者:Li, Yinan; Sun, Zhibing; Liu, Jun
作者单位:University of Waterloo
摘要:This article proposes a specification-guided framework for control of nonlinear systems with linear temporal logic (LTL) specifications. In contrast with well-known abstraction-based methods, the proposed framework directly characterizes the winning set, i.e., the set of initial conditions from which a given LTL formula can be realized, over the continuous state space of the system via a monotonic operator. Following this characterization, an algorithm is proposed to practically approximate th...
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作者:Basso, Erlend A. A.; Schmidt-Didlaukies, Henrik M. M.; Pettersen, Kristin Y. Y.; Sorensen, Asgeir J. J.
作者单位:Norwegian University of Science & Technology (NTNU)
摘要:This article presents an adaptive hybrid feedback control law for global asymptotic tracking of a hybrid reference system for marine vehicles in the presence of parametric modeling errors. The reference system is constructed from a parameterized loop and a speed assignment specifying the motion along the path, which decouples the geometry of the path from the motion along the path. During flows, the hybrid feedback consists of a proportional-derivative action and an adaptive feedforward term, ...
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作者:Haring, Mark; Fossoy, Synne; Silva, Thiago Lima; Pavlov, Alexey
作者单位:SINTEF; Norwegian University of Science & Technology (NTNU); SINTEF; Norwegian University of Science & Technology (NTNU)
摘要:Industrial applications of extremum seeking control (ESC) can be a hit and miss affair. Although a gain in performance can be achieved, the dither applied to excite the system causes unwanted fluctuations in the performance of the system. The fluctuations in systems with a single extremum seeking loop are generally small. However, for systems with many extremum seeking loops, the fluctuations in each loop may add up to an intolerable amount of fluctuation in the total performance. In this arti...
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作者:Zhang, Jie; Yang, Xusheng; Zhang, Wen-An
作者单位:Zhejiang University of Technology
摘要:This article studies the Bayesian filtering problem for nonlinear systems with heavy-tailed noises. Because of the nonlinearity and heavy tail characteristics, the Gaussian distribution or particle sets may fail to express the posterior probability density distribution; thus, the progressive Bayesian filtering framework is proposed. With the filtering framework, the measurement update is divided into several steps, and the intermediate posterior distributions are chosen as the importance propo...
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作者:Andrade, Francisco; Figueiredo, Mario A. T.; Xavier, Joao
作者单位:Universidade de Lisboa; Instituto de Telecomunicacoes; Universidade de Lisboa; Universidade de Coimbra
摘要:The Banach-Picard iteration is widely used to find fixed points of locally contractive (LC) maps. This article extends the Banach-Picard iteration to distributed settings; specifically, we assume the map of which the fixed point is sought to be the average of individual (not necessarily LC) maps held by a set of agents linked by a communication network. An additional difficulty is that the LC map is not assumed to come from an underlying optimization problem, which prevents exploiting strong g...
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作者:Chen, Liangming; Sun, Zhiyong
作者单位:Nanyang Technological University; Eindhoven University of Technology
摘要:The global stabilization of planar angle rigid formations is acknowledged to be a challenging problem in the existing literature even when relative position measurements are available among neighboring agents. Inspired by an angle-induced linear constraint imposed on each triangle, this article first proposes formation control laws to achieve almost global stabilization of triangularly angle rigid formations using local relative position measurements. Compared with some other globally stable f...
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作者:Guo, Zongyi; Oliveira, Tiago Roux; Guo, Jianguo; Wang, Zheng
作者单位:Northwestern Polytechnical University; Universidade do Estado do Rio de Janeiro; Northwestern Polytechnical University
摘要:This article presents a performance-guaranteed ad- aptive asymptotic tracking control scheme for a class of nonlinear systems with unknown sign-switching control direction. By introducing the periodic sliding mode technique and equivalent control- based adaptive mechanism, the proposed control approach ensures that the sliding mode surface is reached in finite time, and thus, the asymptotic stability is achieved rather than only signals boundedness. Simultaneously, the tracking performance is ...
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作者:Peng, Shanshan; Zhang, Jinxing; Zhu, Jiandong; Lu, Jianquan; Li, Xiaodi
作者单位:Southeast University - China; Shandong Normal University; Nanjing Normal University
摘要:For a high-dimensional Kuramoto model with identical oscillators under a general digraph that has a directed spanning tree, although the exponential synchronization has been proved under some initial state constraints, exponential synchronization rates have not been described exactly until now. In this article, the supremum of exponential synchronization rates is precisely determined as the smallest real part of the nonzero Laplacian eigenvalues of the digraph. Our obtained result extends the ...