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作者：Wang, Mengzhi; Cheng, Peng; Zhang, Zhenyong; Wang, Mufeng; Chen, Jiming
作者单位：Zhejiang University; Guizhou University; Zhejiang University
摘要：This article is concerned with periodic event-triggering laws in robust model predictive control (MPC) for continuous-time constrained nonlinear systems. The online optimal control problem solved at triggering times is introduced. A periodic static event-triggering condition, in which a fixed sampling time interval plays an important role in avoiding Zeno behavior, is presented to alleviate continuous checking of event detections. Then, a periodic dynamic event-triggering condition is investig...
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作者：Zheng, Wei; Jung, Taeho; Lin, Hai
作者单位：University of Notre Dame; University of Notre Dame
摘要：The one-sided two-player zero-sum partially observable stochastic games (OTZ-POSG) have emerged as popular models recently, especially in the cyber-security literature. In this game, the state is hidden for one player but directly observed by the other player for whom we call the informed player. All existing OTZ-POSG models assumed that the observation space is discrete and the action of the informed player is private. However, these assumptions may become invalid in real applications. For ex...
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作者：Zou, Lei; Wang, Zidong; Shen, Bo; Dong, Hongli
作者单位：Donghua University; Brunel University; Northeast Petroleum University; Northeast Petroleum University
摘要：This article is concerned with the secure state estimation problem for a networked system with multirate measurements. The measurement data are transmitted to the estimator over a communication network, where an eavesdropper could intercept the transmitted information and generate the state estimates based on the overheard signals. In order to protect the privacy of the system state from information leakage, a novel encryptor is proposed to encrypt the measurement signals into codewords before...
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作者：Cong, Shen
作者单位：Heilongjiang University
摘要：In this article, we present a switching control approach to studying the stabilization problem of linear Markovian switching systems. The switching signal in feedback loop is generated independently of the underlying switching signal. Moreover, the closed-loop switching signal can be accelerated to show the influence of its stationary distribution. As a result, the transition matrix of the closed-loop system approximates such an operator semigroup that its infinitesimal generator exactly is th...
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作者：Lu, An-Yang; Yang, Guang-Hong
作者单位：Northeastern University - China; Northeastern University - China; King Abdulaziz University
摘要：This article investigates the secure state estimation problem for cyber-physical systems (CPSs) under sparse sensor attacks. In the existing results, the secure state estimation is usually established as an NP-hard problem where combinatorial candidates should be checked since the set of attacked channels is unknown. For avoiding brute force search, a novel state decomposition technique is proposed such that the state can be reconstructed by a simple majority vote. Necessary and sufficient con...
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作者：Padoan, Alberto
作者单位：Swiss Federal Institutes of Technology Domain; ETH Zurich
摘要：The paper studies the model reduction problem using the notion of least squares moment matching. For linear systems, the main idea is to approximate a transfer function by ensuring that the interpolation conditions imposed by moment matching are satisfied in a least squares sense. The paper revisits this idea using tools from output regulation theory to develop a nonlinear enhancement of the notion of least squares moment matching and a unifying model reduction framework both for linear and no...
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作者：Verrelli, Cristiano Maria; Tomei, Patrizio
作者单位：University of Rome Tor Vergata
摘要：Consider a linear stable system-described by the transfer function P(s) of unknown parameters, unknown order, and unknown relative degree-under a linear exosystem generating biased multisinusoidal references and/or disturbances with at most q different known frequencies omega(i), i = 1,& mldr;,q . It has been recently established that a linear regulator with minimal order (2q + 1) exists under the knowledge of the positive or negative signs of i) P(0) and ii) either R(P(j omega(i))) or I(P(j o...
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作者：Habibi, Hamed; Yazdani, Amirmehdi; Darouach, Mohamed; Wang, Hai; Fernando, Tyrone; Howard, Ian
作者单位：University of Luxembourg; Murdoch University; Universite de Lorraine; Centre National de la Recherche Scientifique (CNRS); CNRS - Institute for Information Sciences & Technologies (INS2I); University of Western Australia; Curtin University
摘要：In this note, a robust output feedback fault-tolerant control for a high-performance tracking problem of a Lipschitz nonlinear system under simultaneous sensor fault and disturbance is developed. The proposed scheme includes the design of an adaptive sliding mode observer, which recovers the separation principle. A tangent-type barrier Lyapunov function is incorporated in the backstepping framework to maintain the system states in a prescribed performance bound. Moreover, the unknown estimatio...
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作者：Kuznetsov, Nikolay V.; Lobachev, Mikhail Y.; Yuldashev, Marat V.; Yuldashev, Renat V.; Tavazoei, Mohammad Saleh
作者单位：Saint Petersburg State University; Russian Academy of Sciences; Sharif University of Technology
摘要：Phase-locked loops (PLLs) are nonlinear automatic control circuits widely used in telecommunications, computer architecture, gyroscopes, and other applications. One of the key problems of nonlinear analysis of PLL systems has been stated by Floyd M. Gardner as being to define exactly any unique lock-in frequency. The lock-in range concept describes the ability of PLLs to reacquire a locked state without cycle slipping and its calculation requires nonlinear analysis. This work analyzes a second...
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作者：Nawaz, Farhad; Ornik, Melkior
作者单位：University of Illinois System; University of Illinois Urbana-Champaign; University of Pennsylvania; University of Illinois System; University of Illinois Urbana-Champaign; University of Illinois System; University of Illinois Urbana-Champaign
摘要：Missions for autonomous systems often require agents to visit multiple targets in complex operating conditions. This work considers the problem of visiting a set of targets in minimum time by a team of noncommunicating agents in a Markov decision process (MDP). The single-agent problem is at least NP-complete by reducing it to a Hamiltonian path problem. We first discuss an optimal algorithm based on Bellman's optimality equation that is exponential in the number of target states. Then, we tra...
