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作者：Wu, Shizhen; Liang, Xiao; Fang, Yongchun; He, Wei
作者单位：Nankai University; Nankai University
摘要：The geometric maneuvering problem for underactuated vertical takeoff and landing vehicles is considered in this article. First, driven by the demands in this study, the input-to-state stability (ISS) theory is extended to the closed set case with input restriction considered. Then, the inner-outer loop hierarchical paradigm, originally proposed for tracking, is modified for the maneuvering problem, based on which the maneuvering problem is formulated as a closed set stabilization problem. Then...
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作者：Sun, Libei; Huang, Xiucai; Song, Yongduan
作者单位：Chongqing University
摘要：This note investigates the decentralized stabilization problem for a class of interconnected systems in the presence of non-triangular structural uncertainties and time-varying parameters, where each subsystem exchanges information only with its neighbors and only intermittent (rather than continuous) states and input are to be utilized. Thus far to the best of authors' knowledge, no solution exists priori to this work, despite its high prevalence in practice. Two globally decentralized adapti...
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作者：Tao, Tian; Roy, Spandan; De Schutter, Bart; Baldi, Simone
作者单位：Delft University of Technology; International Institute of Information Technology Hyderabad; Southeast University - China
摘要：In this article, we propose a new practical synchronization protocol for multiple Euler-Lagrange systems without structural linear-in-the-parameters (LIP) knowledge of the uncertainty and where the agents can be interconnected before control design by unknown state-dependent interconnection terms. This setting is meant to overcome two standard a priori assumptions in the literature concerning uncertainty with LIP structure and absence of interaction among agents before designing the synchroniz...
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作者：Zhang, Pengfei; Zhang, Yiqun
摘要：In this article, we aim to study the analytical solution of two identical weak pursuers and one strong evader closed-loop game with a one-/two-step Stackelberg approach. Toward this, the basic idea is presented, that is, the solutions of the closed-loop game and an n-step Stackelberg game might be identical. In particular, we develop the optimal one-/two-step Stackelberg strategy for the evader, as well as the optimal state feedback/closed-loop strategy for the pursuers. On this basis, we proc...
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作者：Hossain, Md. Sumon; Trenn, Stephan
作者单位：University of Groningen
摘要：We propose a novel model-reduction approach for switched linear systems with a known switching signal. The class of considered systems encompasses switched systems with mode-dependent state dimension as well as impulsive systems. Our method is based on a suitable definition of (time-varying) reachability and observability Gramians, and we show that these Gramians satisfy precise interpretations in terms of input and output energy. Based on balancing the midpoint Gramians, we propose a piecewis...
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作者：Molloy, Timothy L.; Nair, Girish N.
作者单位：University of Melbourne; Australian National University
摘要：In this article, we investigate partially observed Markov decision processes (POMDPs) with cost functions regularized by entropy terms describing state, observation, and control uncertainty. Standard POMDP techniques are shown to offer bounded-error solutions to these entropy-regularized POMDPs, with exact solutions possible when the regularization involves the joint entropy of the state, observation, and control trajectories. Our joint-entropy result is particularly surprising since it consti...
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作者：Mousavi, Alireza; Markazi, Amir H. D.; Ferrara, Antonella
作者单位：Iran University Science & Technology; University of Pavia
摘要：This article considers the design of a minimum-time second-order sliding mode control (SOSMC) method for a class of full-state and input-constrained nonlinear systems. In this study, to enable the handling of the state and input constraints, a barrier-function-based state transformation method is employed to convert the original control problem to an unconstrained control problem. Using the new representation of the system dynamics and the input-state linearization technique, a novel sliding m...
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作者：Lu, An-Yang; Yang, Guang-Hong
作者单位：Northeastern University - China; Northeastern University - China; Northeastern University - China
摘要：This article investigates the problem of attack detection for cyber-physical systems with input constraints in the presence of command and sensor attacks. For detecting a wider range of attacks, two attack detection strategies are designed, corresponding to the control center side and the controlled system side, respectively. First, from the perspective of the control center, which sends commands and collects measurements, a novel attack detector is designed to detect irregularities by analyzi...
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作者：Zhu, Shouchong; Chen, Wei
作者单位：Peking University; Peking University
摘要：In this article, we unveil majorization inequalities for Poisson- and Bode-type integrals of the singular values of sensitivity and complementary sensitivity functions for multiple-input-multiple-output (MIMO) feedback control systems. These majorization inequalities demonstrate that the evenness of control difficulties in sensitivity and complementary sensitivity reduction across the channels gives a fundamental design constraint. Lower bounds for the evenness are shown to be determined by th...
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作者：Alghunaim, Sulaiman A.
作者单位：Kuwait University
摘要：Distributed optimization methods with local updates have recently attracted a lot of attention due to their potential to reduce the communication cost of distributed methods. In these algorithms, a collection of nodes performs several local updates based on their local data, and then, they communicate with each other to exchange estimate information. While there have been many studies on distributed local methods with centralized network connections, there has been less work on decentralized n...
