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作者：Disaro, Giorgia; Valcher, Maria Elena
作者单位：University of Padua
摘要：In this article, we investigate a data-driven approach to the design of an unknown-input observer (UIO). Specifically, we provide necessary and sufficient conditions for the existence of a UIO for a discrete-time linear time-invariant system, designed based only on some available data, obtained on a finite time window. We also prove that, under weak assumptions on the collected data, the solvability conditions derived by means of the data-driven approach are in fact equivalent to those obtaine...
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作者：Kawano, Yu; van der Schaft, Arjan; Scherpen, Jacquelien M. A.
作者单位：Hiroshima University; University of Groningen; University of Groningen; University of Groningen
摘要：In this article, we study incrementally exponentially stable (IES) image and kernel representations for nonlinear systems with the aim of generalizing the Youla-Kucera parameterization in the contraction framework. We first construct these representations and their stable inverses in the contraction framework and then provide a parameterization of stabilizing controllers by additionally assuming incremental input-to-state stability for the image representation. Focusing on constant metrics res...
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作者：Wang, Yunan; Hu, Chuxiong; Li, Zeyang; Lin, Shize; He, Suqin; Zhu, Yu
作者单位：Tsinghua University; Tsinghua University
摘要：Time-optimal control for high-order chain-of-integrators systems with full state constraints and arbitrarily given terminal states remains a challenging problem in the optimal control theory domain, yet to be resolved. To enhance further comprehension of the problem, this article establishes a novel notation system and theoretical framework, providing the switching manifold for high-order problems in the form of switching laws. Through deriving properties of switching laws regarding signs and ...
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作者：Chen, Haiyang; Zong, Guangdeng; Zhuang, Guangming; Song, Shiji
作者单位：Tiangong University; Liaocheng University; Tsinghua University
摘要：This article addresses the finite-time dissipative resilient output feedback control for discrete-time semi-Markov jump systems (S-MJSs). Instead of the Lyapunov stability over an infinite-time horizon, transient dynamics in short-time are focused on. With imprecise mode matching, the controller may access partial information of the system mode, which is assumed time-varying here rather than fixed as studied in the literature. New constraints are developed to leverage the imprecise mode jumpin...
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作者：Wu, Ping; Huang, Heyan; Lu, Haolin; Liu, Zhengyang
作者单位：Beijing Institute of Technology
摘要：In the field of distributed online convex optimization with delayed feedback, previous works have primarily focused on scenarios with fixed and predetermined delays. In this article, we consider a more complex and realistic scenario with unknown delays. Here, the delayed periods vary among agents and iterations, and even the time stamps could be unknown. To address the challenges arising from asynchronous delayed optimization and communication within the network, we propose a delayed distribut...
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作者：Zakwan, Muhammad; Ferrari-Trecate, Giancarlo
作者单位：Swiss Federal Institutes of Technology Domain; ETH Zurich; Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne
摘要：The control of large-scale cyber-physical systems requires optimal distributed policies relying solely on limited communication with neighboring agents. However, computing stabilizing controllers for nonlinear systems while optimizing complex costs remains a significant challenge. Neural networks (NNs), known for their expressivity, can be leveraged to parameterize control policies that yield good performance. However, NNs' sensitivity to small input changes poses a risk of destabilizing the c...
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作者：Zhao, Hanzhen; Yue, Pengyun; Fang, Cong
作者单位：Peking University
摘要：In this article, we propose a new compression technique named common random reconstruction (CORE), which can be used to compress the information transmitted between agents to reduce the total communication costs (TCCs) without other strict conditions. Previous communication compression techniques cannot ensure the improvement of TCCs due to the additional communication rounds caused by information distortion. CORE projects the vector-valued information to a low-dimensional one through common G...
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作者：Borisov, Oleg; Isidori, Alberto; Pyrkin, Anton; Zhivitskii, Andrei
作者单位：ITMO University; Sapienza University Rome; Hangzhou Dianzi University
摘要：This article addresses the problem of adaptive output regulation of multiple-input multiple-output (MIMO) linear time-invariant (LTI) systems with unmodeled input dynamics. It is shown how a postprocessing tunable internal model and a high-gain observer can be effectively used to solve the output regulation problem under uncertainties. The performance of the design framework is shown by application to positioning of surface vessels.
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作者：Di Ferdinando, Mario; Pola, Giordano; Di Gennaro, Stefano; Pepe, Pierdomenico
作者单位：University of L'Aquila
摘要：In this article, the quantized sampled-data stabilization problem of nonlinear asynchronous switched (NAS) systems is studied. As a first step, semiglobal practical stability results are provided for NAS systems under digitally implemented continuous-time stabilizers and any kind of switching with arbitrarily fixed dwell time. Then, by suitably exploiting the notion of steepest descent switching feedbacks (SDSFs) induced by common Lyapunov functions and the input-to-state stability redesign ap...
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作者：Zhang, Yanxin; Yu, Chengpu; Ferrer, Gonzalo; Fabiani, Filippo
作者单位：Beijing Institute of Technology; IMT School for Advanced Studies Lucca
摘要：We design specific neural networks (NNs) for the identification of switching nonlinear systems in the state-space form, which explicitly model the switching behavior and address the inherent coupling between system parameters and switching modes. Such coupling is specifically addressed by leveraging the expectation-maximization framework. In particular, our technique will combine a moving window approach in the expectation-step to efficiently estimate the switching sequence, together with an e...
