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作者：Liu, Shenyu
作者单位：Beijing Institute of Technology
摘要：This technical note studies characterizations and stability criteria for the 2-mode Markovian switched nonlinear systems. A Markovian switched nonlinear system is a switched system where its switching signal is induced by a continuous-time Markov chain. Two random processes-telegraph process and counting process-are defined on the stochastic switching signal. The evolution of the joint probability density functions of the two random processes conditional on the initial values of the switching ...
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作者：Cui, Rong-Heng; Xie, Xue-Jun
作者单位：Qufu Normal University
摘要：This article solves the problem of almost sure exponential stabilization via output feedback control for stochastic feedforward nonlinear systems with the unknown growth rate. A novel dynamic gain is introduced not only to cope with system uncertainties but also to ensure exponential convergence. Based on this dynamic gain, an adaptive output feedback controller is explicitly constructed. By introducing an improved stochastic analysis method, we rigorously prove that the closed-loop system has...
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作者：Simha, Ashutosh; Kaparin, Vadim; Mullari, Tanel; Kotta, Ulle
作者单位：Delft University of Technology; Tallinn University of Technology; Tallinn University of Technology
摘要：This technical note addresses the problem of transforming a single-input-single-output discrete-time system into the extended observer form, which comprise a linear time-invariant observable component, and a nonlinear injection term, which depends on the input, output, and their forward shifts up to a finite order. Intrinsic necessary and sufficient conditions are provided for obtaining the extended observer form via a parametrized state transformation. The conditions are formulated directly i...
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作者：Ortiz, Reynaldo; Egorov, Alexey; Mondie, Sabine
作者单位：CINVESTAV - Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional; Saint Petersburg State University
摘要：In this article, we analyze the robust stability of integral delay systems with a single delay. We first derive a general result based on the complete type functional that depends on the Lyapunov delay matrix of the stable nominal system. We apply it directly to the study of integral equations with uncertain kernel and uncertain delay. The result is also helpful in analyzing nonlinear integral equations and computing exponential estimates of the solutions.
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作者：Tarantino, Lorenzo; Sassano, Mario; Galeani, Sergio; Astolfi, Alessandro
作者单位：Sapienza University Rome; Imperial College London
摘要：A class of finite-horizon optimal control problems, the solution of which relies on a time-varying change of coordinates that incorporates the transition matrix of the system linearized along the current estimate of the optimal process, is studied. The transformed dynamics exhibit a constant optimal costate. Differently from existing methods that hinge upon similar tools, the proposed strategy does not require at each step the (numerical) solution of a two-point boundary value problem or of a ...
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作者：Zhang, Xu; Yuan, Zhenyuan; Xu, Siyuan; Lu, Yang; Zhu, Minghui
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Lancaster University
摘要：This article considers perception-driven control of a mobile robot for path tracking where perception is performed by a machine learning system. The robot is subject to passive attacks and evasion attacks on image transmission. To defeat the passive attacks, we adopt chaotic encryption technique to disguise pixels of plain images in real time, and construct a bank of fuzzy unknown input observers to decrypt the cipher pixels in parallel. We characterize the security level of the proposed chaot...
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作者：Li, Xuefang; Hou, Zhongsheng
作者单位：Sun Yat Sen University; Qingdao University
摘要：In this work, the adaptive iterative learning control (AILC) for a generic class of nonsquare nonlinear systems is investigated in presence of unknown control gain matrices and nonparametric iteration-varying uncertainties. Differently from the existing approaches, the present work develops a unified, structurally simple and user-friendly AILC method, which is effective to handle nonlinear systems with parametric or nonparametric uncertainties, square or nonsquare input matrices, known or unkn...
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作者：Chen, Shixiang; Garcia, Alfredo; Hong, Mingyi; Shahrampour, Shahin
作者单位：Chinese Academy of Sciences; University of Science & Technology of China, CAS; Texas A&M University System; Texas A&M University College Station; University of Minnesota System; University of Minnesota Twin Cities; Northeastern University
摘要：Coordinated group behavior arising from purely local interactions has been successfully modeled with distributed consensus-seeking dynamics, where the local behavior is aimed at minimizing the disagreement with neighboring peers. However, it has been recently shown that when constrained by a manifold geometry, distributed consensus-seeking dynamics may ultimately fail to converge to a global consensus state. In this article, we study discrete-time consensus-seeking dynamics on the Stiefel mani...
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作者：Deng, Chao; Xu, Lei; Yang, Tao; Yue, Dong; Chai, Tianyou
作者单位：Nanjing University of Posts & Telecommunications; Northeastern University - China
摘要：In this article, we investigate the distributed cooperative optimization problem for heterogeneous uncertain high-order nonlinear multi-agent systems with an intermittent communication network, where each agent can only share information with its neighbors in some disjoint time intervals. To address this problem, the design process consists of constructing a distributed optimization algorithm and designing a decentralized tracking controller. To design a distributed optimization algorithm, vir...
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作者：Liu, Tong; Zhang, Zengjie; Liu, Fangzhou; Buss, Martin
作者单位：Technical University of Munich; Harbin Institute of Technology; Eindhoven University of Technology
摘要：In this note, we develop an adaptive observer for a class of nonlinear systems with switched unknown parameters to estimate the states and parameters simultaneously. The main challenge lies in how to eliminate the disturbance effect of zero-input responses caused by the switching on the parameter estimation. These responses depend on the unknown states at switching instants (SASI) and constitute an additive disturbance to the parameter estimation, which obstructs parameter convergence to zero....
