2021

最新文章

• Distortion-Based Lightweight Security for Cyber-Physical Systems AI翻译
  作者：Agarwal, Gaurav Kumar; Karmoose, Mohammed; Diggavi, Suhas; Fragouli, Christina; Tabuada, Paulo
  作者单位：University of California System; University of California Los Angeles
  摘要：In cyber-physical systems (CPS), inference based on communicated data is of critical significance as it can be used to manipulate or damage the control operations by adversaries. This calls for efficient mechanisms for secure transmission of data since control systems are becoming increasingly distributed over larger geographical areas. Distortion-based security, recently proposed as one candidate for secure transmissions in CPS, is not only more appropriate for these applications but also qui...
• Variational Adaptive Kalman Filter With Gaussian-Inverse-Wishart Mixture Distribution AI翻译
  作者：Huang, Yulong; Zhang, Yonggang; Shi, Peng; Chambers, Jonathon
  作者单位：Harbin Engineering University; University of Adelaide; University of Leicester
  摘要：In this article, a new variational adaptive Kalman filter with Gaussian-inverse-Wishart mixture distribution is proposed for a class of linear systems with both partially unknown state and measurement noise covariance matrices. The state transition and measurement likelihood probability density functions are described by a Gaussian-inverse-Wishart mixture distribution and a Gaussian-inverse-Wishart distribution, respectively. The system state vector together with the state noise covariance mat...
• Discrete-Time Leader-Following Consensus Over Switching Digraphs With General System Modes AI翻译
  作者：Liu, Junwei; Huang, Jie
  作者单位：Chinese University of Hong Kong
  摘要：The existing results on the leader-following consensus problem for linear discrete-time multiagent systems over jointly connected switching digraphs only apply to systems without exponentially unstable modes. In this article, we will remove this restriction by employing a more general class of distributed control laws which includes a set of weight coefficients. By introducing the average radius for a switched matrix which is determined by the Laplacian matrix of the switching digraph of the m...
• Adaptive Control of Uncertain Coupled Reaction-Diffusion Dynamics With Equidiffusivity in the Actuation Path of an ODE System AI翻译
  作者：Li, Jian; Liu, Yungang
  作者单位：Yantai University; Shandong University
  摘要：This article is devoted to the stabilization via adaptive feedback for a class of uncertain coupled reaction-diffusion dynamics in the actuation path of an ordinary differential equation (ODE) system. The system under investigation, a class of coupled parabolic partial differential equation (PDE)-ODE systems, is more representative since the dynamics in actuation path (i.e., the PDE subsystem) are coupled rather than uncoupled parabolic equations and hence includes those in the related literat...
• Contraction Analysis of Nonlinear DAE Systems AI翻译
  作者：Nguyen, Hung D.; Vu, Thanh Long; Slotine, Jean-Jacques; Turitsyn, Konstantin
  作者单位：Massachusetts Institute of Technology (MIT)
  摘要：This article studies the contraction properties of nonlinear differential-algebraic equation (DAE) systems. Such systems typically appear as a singular perturbation reduction of a multiple-time-scale differential system. In addition, a given DAE may result from the reduction of many synthetic differential systems. We show that an important property of a contracting DAE system is that the reduced system always contracts faster than any synthetic counterpart. At the same time, there always exist...
• Modularity in Design of Dynamical Network Systems: Retrofit Control Approach AI翻译
  作者：Ishizaki, Takayuki; Sasahara, Hampei; Inoue, Masaki; Kawaguchi, Takahiro; Imura, Jun-ichi
  作者单位：Institute of Science Tokyo; Tokyo Institute of Technology; Royal Institute of Technology; Keio University; Gunma University
  摘要：In this article, we develop a modular design method of decentralized controllers for linear dynamical network systems, where multiple subcontroller designers aim at individually regulating their local control performance with accessibility only to their respective subsystem models. First, we derive a constrained version of the Youla parameterization that characterizes all retrofit controllers for a single subcontroller, defined as an add-on-type subcontroller that manages a subsystem. The resu...
• Simultaneous Estimation of Euclidean Distances to a Stationary Object's Features and the Euclidean Trajectory of a Monocular Camera AI翻译
  作者：Bell, Zachary, I; Deptula, Patryk; Doucette, Emily A.; Curtis, J. Willard; Dixon, Warren E.
  作者单位：State University System of Florida; University of Florida
  摘要：Data-based, exponentially converging observers are developed for a monocular camera to estimate the Euclidean distance (and hence accurately scaled coordinates) to features on a stationary object and to estimate the Euclidean trajectory taken by the camera while tracking the object, without requiring the typical positive depth constraint. A Lyapunov-based stability analysis shows that the developed observers are exponentially converging without requiring persistence of excitation through the u...
• Distributed Asynchronous Consensus Control for Nonlinear Multiagent Systems Under Switching Topologies AI翻译
  作者：Li, Kuo; Hua, Chang-Chun; You, Xiu
  作者单位：Yanshan University; Shanxi University
  摘要：This article addresses the distributed asynchronous consensus problem for nonlinear multiagent systems with switching topologies. Different from the existing results, we consider the detection delay of topology modes and some topologies having no directed spanning tree with leader as the root. In these conditions, the distributed asynchronous switched observer is first developed for each follower to accurately estimate the state information of the leader. Then, an output feedback distributed c...
• System Identification With Binary-Valued Observations Under Data Tampering Attacks AI翻译
  作者：Guo, Jin; Wang, Xuebin; Xue, Wenchao; Zhao, Yanlong
  作者单位：University of Science & Technology Beijing; Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
  摘要：With the popularization and application of cyber-physical systems in many industry and infrastructure fields, the security issue has been quite an important concern. This article addresses the defense problem against the data tampering attack under the framework of system identification with binary-valued observations. From the perspective of the attacker, it is shown that how to achieve the maximum hit effect with the least attack energy. From the perspective of the defender, a so-called comp...
• Consensus of Heterogeneous Second-Order Nonlinear Uncertain Multiagent Systems Under Switching Networks AI翻译
  作者：Lu, Maobin; Liu, Lu
  作者单位：Beijing Institute of Technology; City University of Hong Kong
  摘要：The consensus problem of heterogeneous second-order nonlinear uncertain multiagent systems under switching networks is addressed by a distributed control approach. The network communication of all systems is subject to arbitrarily bounded and nonuniform time-varying delays. Based on the internal model principle, a nonlinear distributed dynamic controller is developed to solve the problem. By means of Lyapunov analysis, consensus of heterogeneous second-order nonlinear multiagent systems is ach...