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作者:Voortman, Quentin; Efimov, Denis; Pogromsky, Alexander; Richard, Jean-Pierre; Nijmeijer, Henk
作者单位:Eindhoven University of Technology; Inria; Centre National de la Recherche Scientifique (CNRS); Universite de Lille; Centrale Lille; Centre National de la Recherche Scientifique (CNRS); Inria; Universite de Lille; Eindhoven University of Technology; ITMO University; Universite de Lille; Centrale Lille
摘要:In this article, an approach is proposed for the remote observation of a dynamical system through a data-rate constrained communication channel. The focus is put on discrete-time systems with a Lipschitz nonlinearity, driven by an external signal, and subject to bounded state perturbation and measurement error. The problem at hand is providing estimates of system's state at a remote location, which is connected via a channel, which can only sent limited numbers of bits per unit of time. A solu...
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作者:Cao, Zhiru; Niu, Yugang; Peng, Chen
作者单位:Shanghai University; East China University of Science & Technology
摘要:This article addresses the stochastic finite-time stabilization problem for a class of Markovian jump systems with polytopic uncertainties. First, an adaptive gain-scheduling-based control design method is well proposed. Compared with the traditional common/parameter-independent control method, the polytopic structure characteristic is well used via approximating uncertain parameters in controller design, which might reduce the conservatism and improve the flexibility of control design. Second...
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作者:Zhang, Dandan; Jin, Xin; Su, Hongye
作者单位:Zhejiang University; Fudan University; East China University of Science & Technology
摘要:By designing a time-regularized (Zeno-free) event-triggered strategy for the state-feedback control law, this article considers the stochastic stabilization of networked control systems, where the networked communication is constrained by stochastic pulsing denial-of-service (DoS) attacks. The attacks' cardinal number is supposed to be subject to Poisson distribution, so the interattack time, i.e., the time between two consecutive attack instants, is subject to exponential distribution. The co...
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作者:Efimov, Denis; Fridman, Emilia
作者单位:Inria; Centre National de la Recherche Scientifique (CNRS); CNRS - Institute for Information Sciences & Technologies (INS2I); Universite de Lille; Centrale Lille; Tel Aviv University
摘要:For input-affine nonlinear dynamical systems, an input-to-state stability analysis with respect to (weighted) average values of exogenous perturbations is proposed. The time-delay method is used to represent the system in a suitable form for investigation: A kind of neutral-type differential equation. The introduced approach allows the asymptotic gains with respect to zero-mean periodic signals to be evaluated for nonlinear systems (an analogue of Bode magnitude plot), as well as for integral ...
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作者:Espindola, Eduardo; Tang, Yu
作者单位:NingboTech University
摘要:In this article, rigid-body attitude tracking using vector measurements and gyro rate is studied. A gyro-bias observer and an attitude tracking controller are first devised, which in combination ensure the exponential stability of the desired equilibrium of the overall system. To address inertia-matrix uncertainties and external disturbances, an adaptive controller relying on a modified gyro-bias observer and a disturbance estimator are then developed. Simulations are included to illustrate th...
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作者:Xu, Kang-Li; Jiang, Yao-Lin
作者单位:Xi'an Jiaotong University
摘要:In this article, we propose a new frequency-limited Riemannian geometric-nonlinear conjugate gradient model order reduction (MOR) method with the modified Armijo step-size control to solve the frequency-limited H(2 )optimal MOR problem of linear port-Hamiltonian systems. This problem is formulated as a Riemannian optimization problem on the product of several manifolds. Based on the geometric properties of the product manifold, the Riemannian gradient of the cost function is derived. Further, ...
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作者:Zhao, Shengchao; Liu, Yongchao
作者单位:Dalian University of Technology
摘要:The popular AB /push-pull method for distributed optimization problem may unify much of the existing decentralized first-order methods based on gradient tracking technique. More recently, the stochastic gradient variant of AB /push-pull method ( S - AB ) has been proposed, which achieves the linear rate of converging to a neighborhood of the global minimizer when the step-size is constant. This article is devoted to the asymptotic properties of S - AB with diminishing step-size. Specifically, ...
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作者:Han, Zhiji; Liu, Zhijie; Wang, Jun-Wei; He, Wei
作者单位:University of Science & Technology Beijing; University of Science & Technology Beijing; University of Science & Technology Beijing
摘要:In this article, we propose an adaptive fault-tolerant control strategy for flexible string systems and extend the result to Euler-Bernoulli beam systems under deferred and asymmetric boundary partial output constraints. The designed control strategies consist of a boundary control law and two adaptive parameter update laws. A hyperbolic tangent function is applied to realize rejection to disturbance. With the adaptive technique, the unknown actuator faults are compensated. The deferred partia...
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作者:Li, Bin; Guan, Tao; Guan, Xiaoyi; Zhang, Kai; Yiu, Ka-Fai Cedric
作者单位:Sichuan University; Hong Kong Polytechnic University
摘要:A sliding mode controller is proposed for the attitude control of spacecraft reorientation with attitude constraints. By introducing a potential function, a novel sliding function is designed. With the structure of the proposed sliding function, uniqueness of the equilibrium and fixed-time convergence are rigorously proven. Another advantage of the proposed controller is that the feasibility of attitude constraints can be proven not only on the sliding surface but also outside it. Moreover, th...
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作者:Liu, Rongjian; Lu, Jianquan; Liu, Yang; Yin, Xiang; Hadjicostis, Christoforos N.
作者单位:Chongqing Normal University; Southeast University - China; Southeast University - China; Zhejiang Normal University; Shanghai Jiao Tong University; University of Cyprus
摘要:In this article, we investigate the enforcement of (current-state) opacity, an important information-flow security property, via insertion functions. An insertion function is an obfuscation mechanism that inserts fictitious events to the outputs in order to confuse the outside observer (intruder) such that the secret of the system is not revealed. In some situations, the secret may be revealed when the insertion mechanism is (or becomes) publicly known. This leads to the problem of synthesizin...