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作者：Wang, Jianzheng; Hu, Guoqiang
作者单位：Nanyang Technological University; Zhejiang University of Technology
摘要：In this work, we consider solving a distributed optimization problem in a multiagent network with multiple agent clusters. In each cluster, the agents manage separable cost functions composed of possibly nonsmooth components and aim to achieve an agreement on a common decision of the cluster. The global cost function is considered as the sum of the individual cost functions associated with affine coupling constraints on the clusters' decisions. To solve this problem, the dual problem is formul...
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作者：Xu, Haotian; Liu, Shuai; Wang, Bohui; Wang, Jingcheng
作者单位：Shandong University; Xidian University; Shanghai Jiao Tong University
摘要：The distributed observer design problem holds significant importance in cases in which the output information of a system is decentralized across different subsystems. Each subsystem has a local observer and access to one part of the measurement outputs and information exchanged through communication networks. This article focuses on the design of distributed observer with jointly connected directed switching networks. The problem presents challenges due to passive switching modes and the open...
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作者：Zhang, Yuan; Fernando, Tyrone; Darouach, Mohamed
作者单位：Beijing Institute of Technology; University of Western Australia; Universite de Lorraine
摘要：In this article, new characterizations for functional observability, functional detectability, and structural functional observability (SFO) are developed, and based on them, the related optimal sensor placement problems are investigated. A novel concept of modal functional observability coinciding with the notion of modal observability is proposed. This notion introduces necessary and sufficient conditions for functional observability and detectability in a unified way without resorting to sy...
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作者：Mitra, Aritra
作者单位：North Carolina State University
摘要：We study the finite-time convergence of temporal- difference (TD) learning with linear function approximation under Markovian sampling. Existing proofs for this setting either assume a projection step in the algorithm to simplify the analysis, or require a fairly intricate argument to ensure stability of the iterates. We ask: Is it possible to retain the simplicity of a projection-based analysis without actually performing a projection step in the algorithm? Our main contribution is to show th...
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作者：Boughellaba, Mouaad; Tayebi, Abdelhamid
作者单位：Lakehead University
摘要：In this article, we consider the problem of distributed attitude estimation of multiagent systems, evolving on SO(3), relying on individual angular velocity and relative attitude measurements. The interaction graph topology is assumed to be an undirected tree. First, we propose a continuous nonlinear distributed attitude estimation scheme with almost global asymptotic stability guarantees. Thereafter, we propose a hybrid nonlinear distributed attitude estimation scheme enjoying global asymptot...
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作者：John, Varkey M.; Katewa, Vaibhav
作者单位：University System of Georgia; Georgia Institute of Technology; Indian Institute of Science (IISC) - Bangalore; Indian Institute of Science (IISC) - Bangalore
摘要：Opacity is a notion of privacy that is well studied in computer science and discrete-event systems. It describes an eavesdropper's inability to infer a system's secret states by observing the system's outputs. In this article, we consider opacity in linear dynamical systems and study four opacity classes-initial-state, current-state, K-step and infinite-step opacity, and show that they are fundamentally connected to two subspaces of the linear system-the weakly unobservable subspace and the we...
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作者：Liu, Nian; Zhao, Cheng; Tan, Shaolin; Lu, Jinhu
作者单位：Zhongguancun Laboratory; Chinese Academy of Sciences; Beihang University
摘要：This article focuses on the adaptive linear quadratic Gaussian control problem, where both the state matrix A and the control gain matrix B are unknown. We only assume that (A, B) is stabilizable and (A, Q(1/2)) is detectable, where Q is the weighting matrix of the state in the quadratic cost function. This significantly weakens the classic assumptions used in the literature. To design an optimal adaptive control, a weighted least squares algorithm is modified by using random regularization me...
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作者：Wakaiki, Masashi
作者单位：Kobe University
摘要：We study the problem of stabilizing infinite-dimensional systems with input and output quantization. The closed-loop system we consider is subject to packet loss, whose average duration is assumed to be bounded. Given a bound on the initial state, we propose a design method for dynamic quantizers with zoom parameters. We show that the closed-loop state starting in a given region exponentially converges to zero if bounds on quantization errors and packet-loss intervals satisfy suitable conditio...
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作者：Li, Lili; Guo, Qingjun; Fu, Jun; Rong, Di
作者单位：Dalian Maritime University; Northeastern University - China
摘要：The secure output regulation (OR) problem is formulated for networked switched systems (SSs) with severely unstable dynamics that are subjected to long-duration zero-value (LDZV) attacks. For these systems, well-defined switching rules enable the severely unstable dynamics to achieve stability and OR by allowing each subsystem to dwell for a short period. However, during LDZV attacks, the system's external variables (inputs and outputs) are set to zero for a long period. Given the presence of ...
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作者：Qian, Chen; Fang, Yongchun
作者单位：Nankai University; Nankai University
摘要：The objective of this article is to derive the essential invariance and contraction properties for the geometric periodic systems, which can be formulated as a category of differential inclusions, and primarily rendered in the phase coordinate, or the cycle coordinate. First, we introduce the geometric averaging method for this category of systems, and also analyze the accuracy of its averaging approximation. Specifically, we delve into the details of the geometrically periodic system through ...
