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作者：Vaidya, Umesh; Tellez-Castro, Duvan
作者单位：Clemson University
摘要：In this article, we provide a data-driven framework for optimal control of a continuous-time control-affine stochastic dynamical system. The proposed framework relies on the linear operator theory involving Perron-Frobenius (P-F) and Koopman operators. Our first result involving the P-F operator provides a convex formulation to the optimal control problem in the dual space of densities. This convex formulation of the stochastic optimal control problem leads to an infinite-dimensional convex pr...
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作者：Yan, Rui; Deng, Ruiliang; Lai, Haowen; Zhang, Weixian; Shi, Zongying; Zhong, Yisheng
作者单位：Tsinghua University
摘要：This article studies a planar Homicidal Chauffeur reach-avoid differential game, where the pursuer is a Dubins car and the evader has simple motion. The pursuer aims to protect a goal region from the evader. The game is solved in an analytical approach instead of solving Hamilton-Jacobi-Isaacs equations numerically. First, an evasion region is introduced, based on which a pursuit strategy guaranteeing the winning of a simple-motion pursuer under specific conditions is proposed. Motivated by th...
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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...
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作者：O'Neil, Sean; Schirmer, Sophie; Langbein, Frank C.; Weidner, Carrie A.; Jonckheere, Edmond A.
作者单位：University of Southern California; Swansea University; Cardiff University; University of Bristol
摘要：A strictly time-domain. formulation of the log-sensitivity of the error signal to structured plant uncertainty is presented and analyzed through simple but representative classical and quantum systems. Results demonstrate that across a wide range of physical systems, maximization of performance (minimization of the error signal) asymptotically or at a specific time comes at the cost of increased log-sensitivity, implying a time-domain constraint analogous to the frequency-domain identity S(s) ...
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作者：Yu, Yang; Xu, Cheng-Zhong; Yu, Jinpeng
作者单位：Qingdao University; Universite Claude Bernard Lyon 1
摘要：The article deals with synthesis of observers for a linearized water wave system (LWWS) confined in a bounded rectangular fluid domain. To estimate the state of LWWS, including velocity potential and wave elevation, infinite-dimensional state observers are designed by using two different observation measurements. The first observer is designed by measuring the distributed free-surface wave elevation. The convergence rate of this observer is proved to be exponential and fast. The second observe...
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作者：Zhu, Shiyong; Lu, Jianquan; Ho, Daniel W. C.; Cao, Jinde
作者单位：Southeast University - China; City University of Hong Kong; Southeast University - China; Southeast University - China
摘要：In this article, we initiate an important class of vertex-marked directed graphs, referred to as the strong structurally observable graphs (SSOGs), to be the fundamental structural architectures ensuring the observability of several prevalent types of discrete-time iteration systems. This article also answers the minimal control node problem of SSOGs by carrying out two explicit formulas and the corresponding polynomial-time algorithms. Primitively, by exploring the strong structural observabi...
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作者：Hara, Shinji; Kao, Chung-Yao; Khong, Sei Zhen; Iwasaki, Tetsuya; Hori, Yutaka
作者单位：Institute of Science Tokyo; Tokyo Institute of Technology; National Sun Yat Sen University; University of California System; University of California Los Angeles; Keio University
摘要：This article is concerned with a new optimization problem named phase change rate maximization for single-input-single-output linear time-invariant systems. The problem relates to two control problems, namely robust instability analysis against stable perturbations and minimum-norm strong stabilization. We define an index of the instability margin called robust instability radius (RIR) as the smallest -norm of a stable perturbation that stabilizes a given unstable system. This article has two ...
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作者：Tao, Yue-Yue; Wu, Zheng-Guang
作者单位：City University of Hong Kong; Zhejiang University
摘要：This article aims to study the asynchronous static output-feedback (S-OF) stabilization problem for discrete-time Markovian jump linear systems (MJLSs) with nonideal state and mode detection. Since the system state and mode cannot always be obtained ideally, an asynchronous S-OF controller is designed whose mode can be estimated from the system mode via a hidden Markovian model (HMM). A system augmentation approach is used to obtain an equivalent augmented system, in which the input and (contr...
