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作者：Chen, Jing; Mao, Yawen; Gan, Min; Wang, Dongqing; Zhu, Quanmin
作者单位：Jiangnan University; Qingdao University; Qingdao University
摘要：Aitken gradient descent (AGD) algorithm takes some advantages over the standard gradient descent and Newton methods: 1) can achieve at least quadratic convergence in general; 2) does not require the Hessian matrix inversion; 3) has less computational efforts. When using the AGD method for a considered model, the iterative function should be unchanging during all the iterations. This article proposes a hierarchical AGD algorithm for separable nonlinear models based on stage greedy method. The l...
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作者：Gadjov, Dian; Pavel, Lacra
作者单位：University of Toronto
摘要：In this article, we consider distributed Nash equilibrium seeking in monotone and hypomonotone games. We first assume that each player has knowledge of the opponents' decisions and propose a passivity-based modification of the standard gradient-play dynamics, which we call Heavy Anchor. We prove that Heavy Anchor allows a relaxation of strict monotonicity of the pseudogradient, needed for gradient-play dynamics, and can ensure exact asymptotic convergence in merely monotone regimes. We extend ...
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作者：Impicciatore, Anastasia; Pepe, Pierdomenico; D'Innocenzo, Alessandro
作者单位：University of L'Aquila
摘要：This article provides necessary and sufficient Lyapunov conditions for the exponential mean square stability and exponential mean square input-to-state-stability of discrete-time Markovian switching nonlinear systems. An application to the stability analysis of wireless control networks is presented, showing the usefulness of the proposed approach.
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作者：Lee, Donghwan; Lim, Han-Dong; Park, Jihoon; Choi, Okyong
作者单位：Korea Advanced Institute of Science & Technology (KAIST)
摘要：Sutton, Szepesvari and Maei introduced the first gradient temporal-difference (GTD) learning algorithms compatible with both linear function approximation and off-policy training. The goal of this article is 1) to propose some variants of GTDs with extensive comparative analysis and 2) to establish new theoretical analysis frameworks for the GTDs. These variants are based on convex-concave saddle-point interpretations of GTDs, which effectively unify all the GTDs into a single framework, and p...
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作者：Sun, Libei; Huang, Xiucai; Song, Yongduan
作者单位：Chongqing University
摘要：It poses technical difficulty to achieve stable tracking even for single mismatched nonlinear strict-feedback systems when intermittent state feedback is utilized. The underlying problem becomes even more complicated if such systems are networked with directed communication and state-triggering setting. In this work, we present a fully distributed adaptive tracking control scheme for multiple agent systems in strict-feedback form using triggered state from the agent itself and the triggered st...
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作者：Ito, Hiroshi; Shim, Hyungbo
作者单位：Kyushu Institute of Technology; Seoul National University (SNU)
摘要：This article elaborates on flexibility in dealing with the interconnection of integral input-to-state stable (iISS) and input-to-state stable (ISS) systems. The undecoupled characterizations introduced separately for iISS and ISS in the literature are linked to build a framework enabling global analysis without settling for local and semiglobal properties. Feedback control design in the presence of measurement noise can benefit from the framework immediately if plants are nonlinear, irrespecti...
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作者：Yang, Xuefei; Zhang, Jin; Fridman, Emilia
作者单位：Tel Aviv University; Shanghai University
摘要：This article is concerned with the stability of discrete-time systems with fast-varying coefficients that may be uncertain. Recently, a constructive time-delay approach to averaging was proposed for continuous-time systems. In this article, we develop, for the first time, this approach to discrete-time case. We first transform the system to a time-delay system with the delay being the period of averaging, which can be regarded as a perturbation of the classical averaged system. The stability o...
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作者：Li, Jinglun; Takai, Shigemasa
作者单位：University of Osaka
摘要：This article investigates a nonblocking similarity control problem for nondeterministic discrete-event systems, which is a problem of synthesizing a nonblocking supervisor such that the supervised system is simulated by the given specification. In this article, the state of the system is not required to be observable, and the event occurrence is allowed to be partially observed. We propose an algorithm that computes a nonblocking supervisor from a possibly blocking one by iteratively removing ...
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作者：Morato, Marcelo Menezes; Normey-Rico, Julio Elias; Sename, Olivier
作者单位：Universidade Federal de Santa Catarina (UFSC); Communaute Universite Grenoble Alpes; Institut National Polytechnique de Grenoble; Universite Grenoble Alpes (UGA); Centre National de la Recherche Scientifique (CNRS)
摘要：predictive control (MPC) algorithms have long been applied to nonlinear processes. In a quasi-linear parameter varying (qLPV) setting, nonlinearities are included into bounded scheduling parameters, which are given as a function of endogenous variables; these scheduling parameters are a priori unknown along a future prediction horizon, which complicates MPC design. To address this problem, the literature points out two options: robust MPC approaches, considering the scheduling to be uncertain;...
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作者：Wu, Ze-Hao; Zhou, Hua-Cheng; Deng, Feiqi; Guo, Bao-Zhu
作者单位：Foshan University; Central South University; South China University of Technology; Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS; North China Electric Power University
摘要：In this article, a novel control strategy namely disturbance observer-based control is first applied to stabilization and disturbance rejection for an antistable stochastic heat equation with Neumann boundary actuation and unknown boundary external disturbance generated by an exogenous system. A disturbance observer-based boundary control is designed based on the backstepping approach and estimation/cancellation strategy, where the unknown disturbance is estimated in real time by a disturbance...
