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作者：Xu, Juanjuan; Wang, Wei; Zhang, Huanshui
作者单位：Shandong University; Shandong University of Science & Technology
摘要：In this article, we study the mean-square stabilization of discrete-time multiplicative-noise stochastic systems under decentralized controllers. Two controllers are involved in the system where each controller has access to different information and one information set is contained by another one. The adopted information structure is adapted open-loop. The main contribution of the article is twofold. On one hand, we give the unique explicit solution of the finite-horizon optimization problem ...
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作者：Cavraro, Guido; Dall'Anese, Emiliano; Comden, Joshua; Bernstein, Andrey
作者单位：United States Department of Energy (DOE); National Renewable Energy Laboratory - USA; University of Colorado System; University of Colorado Boulder
摘要：The article investigates the problem of estimating the state of a time-varying system with a linear measurement model; in particular, the article considers the case where the number of measurements available can be smaller than the number of states. In lieu of a batch linear least-squares approach-well-suited for static networks, where a sufficient number of measurements could be collected to obtain a full-rank design matrix-the article proposes an online algorithm to estimate the possibly tim...
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作者：Cui, Yukang; Shen, Jun; Zhang, Wei; Feng, Zhiguang; Gong, Xin
作者单位：Shenzhen University; Peng Cheng Laboratory; Nanjing University of Aeronautics & Astronautics; Chongqing Three Gorges University; Harbin Engineering University; Shenzhen University; University of Hong Kong
摘要：This article studies the positivity and stability of homogeneous coupled differential-difference equations with time-varying delays. First, a sufficient positivity condition is proposed for the nonlinear coupled differential-difference equations with delays. Then, based on this positivity condition, we present necessary and sufficient conditions ensuring the exponential stability and bounding the decay rate for time-delay homogeneous coupled differential-difference equations with homogeneity o...
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作者：Kasis, Andreas; Lestas, Ioannis
作者单位：University of Cyprus; University of Cyprus; University of Cyprus; University of Cambridge
摘要：Thermostatically controlled loads (TCLs) can provide ancillary services to the power network by aiding existing frequency-control mechanisms. TCLs are, however, characterized by an intrinsic limit cycle behavior, which raises the risk that these could synchronize when coupled with the frequency dynamics of the power grid, i.e., simultaneously switch, inducing persistent and possibly catastrophic power oscillations. To address this problem, schemes with a randomized response time in their contr...
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作者：Lindemann, Lars; Pappas, George J.; Dimarogonas, Dimos, V
作者单位：University of Pennsylvania; Royal Institute of Technology
摘要：The deployment of autonomous systems in uncertain and dynamic environments has raised fundamental questions. Addressing these is pivotal to build fully autonomous systems and requires a systematic integration of planning and control. We first propose reactive risk signal interval temporal logic (ReRiSITL) as an extension of signal temporal logic (STL) to formulate complex spatiotemporal specifications. Unlike STL, ReRiSITL allows to consider uncontrollable propositions that may model humans as...
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作者：Ren, Wei; Dimarogonas, Dimos, V
作者单位：Universite Catholique Louvain; Royal Institute of Technology
摘要：This article studies the tracking control problem of networked multiagent systems under both multiple networks and event-triggered mechanisms. Multiple networks are to connect multiple agents and reference systems with decentralized controllers to guarantee their information transmission, whereas the event-triggered mechanisms are to reduce the information transmission via the networks. In this article, each agent has a network to communicate with its controller and reference system, and all n...
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作者：Watanabe, Ana T. Y.; Leal, Andre B.; Cury, Jose E. R.; de Queiroz, Max H.
作者单位：Universidade do Estado de Santa Catarina; Universidade Federal de Santa Catarina (UFSC)
摘要：In this article, we combine fault diagnosis and prognosis to generalize the notion of safe controllability of discrete-event systems. To do so, we reformulate the notions of safe diagnosability, prognosability, safe controllability by diagnosis, and safe controllability by prognosis in the context of strings. Moreover, we combine these notions to introduce the concept of safe controllability by diagnosis or prognosis, or simply DP-safe controllability. We show that a language can be DP-safe co...
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作者：Chen, Jun; Kumar, Ratnesh
作者单位：Oakland University; Iowa State University
摘要：This article studies the prognosis of failure, i.e., its prediction prior to its occurrence, in stochastic discrete event systems. Prior work has focused on the definition and offline verification of m-steps stochastic-prognosability, or S-m-prognosability, which allows the prediction of a fault at least m-steps in advance. This article complements the existing work by proposing an algorithm for the computation of online failure prognoser. The proposed algorithm reduces the condition for issui...
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作者：Darup, Moritz Schulze; Book, Gerrit; Quevedo, Daniel E.; Nagahara, Masaaki
作者单位：Dortmund University of Technology; University of Paderborn; Queensland University of Technology (QUT); University of Kitakyushu
摘要：We investigate the implementation of a sparsitypromoting hands-off control scheme using the alternating direction method of multiplies (ADMM). In order to minimize the numerical control effort along with the actuation one, only a single ADMM iteration per time step is considered. We analyze the resulting closed-loop dynamics for linear systems with additive disturbances and show that the proposed scheme provides sparse controls as desired and, in addition, ensures input-to-state practical stab...
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作者：Li, Xiaoyan; Hadjicostis, Christoforos N.; Li, Zhiwu
作者单位：Xidian University; University of Cyprus; Macau University of Science & Technology
摘要：Opacity is a confidentiality property that holds if certain secret behavior of a system, typically represented by a predicate, cannot be revealed under any system evolution. Among other proposed methodologies, when opacity is violated, it can be enforced using insertion mechanisms, i.e., by inserting symbols before an actual system output (in real time as the system evolves) in order to replace observation sequences that lead to opacity violations with observation sequences that can be generat...
