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作者:Wu, Jiacheng; Shen, Hao
作者单位:Zhejiang University; Anhui University of Technology
摘要:The Kleinman iteration is a policy iteration method for solving Riccati equations and forms the basis of many reinforcement learning (RL) algorithms. However, its direct application to inverse RL problems is limited by its reliance on known cost functions. To overcome this limitation, we propose a modified Kleinman iteration algorithm that simultaneously estimates the cost weight and the value function matrix during policy evaluation without an additional update step for the cost weight, there...
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作者:Zhu, Guanghui; Chang, Tingxian; Yin, Li; Wu, Naiqi; Li, Zhiwu
作者单位:Xuchang University; North China University of Water Resources & Electric Power; Macau University of Science and Technology
摘要:This article presents a fault diagnosis approach for labeled Petri nets under a decentralized architecture consisting of multiple local sites and a coordinator. The key contribution is a communication protocol that defines the data exchange between each local site and the coordinator. A local site performs fault diagnosis by solving an integer linear programming (ILP) problem, which is formulated based on its local observation and the data received from the coordinator. Since the ILP problem i...
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作者:Beck, Fabian; Sakamoto, Noboru
作者单位:Helmholtz Association; German Aerospace Centre (DLR); Technical University of Munich
摘要:In this contribution, the optimal stabilization problem of periodic orbits is studied via invariant manifold theory and symplectic geometry. The stable manifold theory for the optimal point stabilization case is generalized to the case of periodic orbit stabilization, where a normally hyperbolic invariant manifold (NHIM) plays the role of a hyperbolic equilibrium point. A sufficient condition for the existence of an NHIM of an extended Hamiltonian system is derived in terms of a periodic Ricca...
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作者:Chu, Minghui; Huo, Xin; Ebenbauer, Christian; Ma, Kemao
作者单位:Harbin Institute of Technology; RWTH Aachen University
摘要:In this article, an adaptive accelerated derivative-free optimization algorithm is developed. A composition of noncommutative maps based on objective function evaluations is used to approximate an accelerated gradient descent algorithm with a momentum term. An adaptive step-size rule and an adaptive momentum term are introduced to improve the algorithm's performance in terms of convergence speed and steady-state accuracy. Semi-global asymptotic stability of the proposed algorithm is proved for...
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作者:Huang, Zixin; Zhou, Sai; Song, Jun; Shu, Zhan
作者单位:Wuhan Institute of Technology; Xi'an Jiaotong University; Anhui University; University of Alberta
摘要:This article focused on designing the super-twisting algorithm (STA)-based output-feedback sliding mode control (SMC) for multi-input Markovian jump systems under digital channel transmission. Specifically, the uniform quantization strategy is employed to implement the network communication for both the measured outputs and the sliding variables. It is shown that the novel quantized-data-based output-feedback STA can guarantee the practical reachability of the sliding variable with probability...
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作者:Noori, Sahel Vahedi; Hu, Bin; Dullerud, Geir; Seiler, Peter
作者单位:University of Michigan System; University of Michigan; University of Illinois System; University of Illinois Urbana-Champaign; University of Minnesota System; University of Minnesota Twin Cities
摘要:This article derives a complete set of quadratic constraints (QCs) for the repeated ReLU. The complete set of QCs is described by a collection of matrix copositivity conditions. We also show that only two functions satisfy all QCs in our complete set: the repeated rectified linear unit (ReLU) and flipped ReLU. Thus, our complete set of QCs bounds the repeated ReLU as tight as possible up to the sign invariance inherent in quadratic forms. We derive a similar complete set of incremental QCs for...
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作者:Ren, Hao; Ma, Yajie; Jiang, Bin; Polycarpou, Marios M.; Panayiotou, Christos
作者单位:Nanjing University of Aeronautics & Astronautics; University of Cyprus; University of Cyprus
摘要:This article presents a distributed fault-tolerant control design for nonlinear second-order multiagent systems affected by communication faults caused by malicious cyber-attacks or intentional interference. The approach is implemented in two steps. First, a zero-sum differential game framework is established, where virtual controllers and fault-induced biases are treated as opposing players, minimizing and maximizing cost functions related to local tracking performance and fault tolerance. Se...
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作者:Chaffey, Thomas; Kharitenko, Andrey; Forni, Fulvio; Sepulchre, Rodolphe
作者单位:University of Sydney; University of Cambridge; Swiss Federal Institutes of Technology Domain; ETH Zurich; KU Leuven
摘要:A theorem is proved to verify incremental stability of a feedback system via a homotopy from a known incrementally stable system, making no assumptions on the existence of an extended space, well-posedness, or causality. A first corollary of that result is that incremental stability may be verified by separation of scaled relative graphs, correcting two assumptions in (Chaffey et al., 2023, Thm. 2). Necessity of this correction is demonstrated by example. A second corollary provides an increme...
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作者:Wang, Yuhan; Zhao, Xudong; Xing, Wei; Li, Yuzhe; Wang, Bohui
作者单位:Dalian University of Technology; Hainan University; Northeastern University - China
摘要:In this article, the security issue of remote state estimation in cyber-physical systems (CPSs) for multihop networks is investigated. A smart sensor transmits its local estimate to a remote estimator through some relay nodes to save limited energy while facing the threat of a malicious Denial-of-Service (DoS) attacker. Due to the energy constraints, the defender allocates transmitting energy on each channel to minimize the estimation error, while the attacker selects the attacking energy impl...
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作者:Yuan, Liwei; Ishii, Hideaki
作者单位:Hunan University; University of Tokyo
摘要:In this article, we study resilient distributed economic dispatch in smart grids where some of the agents are compromised by attackers. The objective is to distributively compute the optimal power generation amount of each normal agent such that the balance between power generation and demand is satisfied within all normal agents despite the erroneous effects from malicious agents. To this end, we propose a novel algorithm for smart grids with directed communication topologies. Our algorithm d...