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作者：Gomez, Marco A.; Cruz-Ancona, Christopher D.; Fridman, Leonid
作者单位：Universidad de Guanajuato; Universidad Nacional Autonoma de Mexico
摘要：We present a new continuous Lyapunov redesign (LR) methodology for the robust stabilization of a class of uncertain time-delay systems that is based on the so-called super twisting algorithm. The main feature of the proposed approach is that allows one to simultaneously adjust the chattering effect and achieve asymptotic stabilization of the uncertain system, which is lost when continuous approximation of the unit control is considered. At the basis of the super twisting based LR methodology i...
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作者：Sarkka, Simo; Garcia-Fernandez, Angel F.
作者单位：Aalto University; University of Liverpool
摘要：This article proposes a general formulation for temporal parallelization of dynamic programming for optimal control problems. We derive the elements and associative operators to be able to use parallel scans to solve these problems with logarithmic time complexity rather than linear time complexity. We apply this methodology to problems with finite state and control spaces, linear quadratic tracking control problems, and to a class of nonlinear control problems. The computational benefits of t...
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作者：Wang, Le Yi; Yin, George; Lin, Feng; Polis, Michael P.; Chen, Wen
作者单位：Wayne State University; University of Connecticut; Oakland University; Wayne State University
摘要：This article investigates observability and observer design for randomly switched linear systems (RSLSs) whose subsystems are all unobservable. Conditions for determining the analog state uniquely during operation, defined as stochastic observability, are studied. This article establishes probabilistic descriptions of stochastic observability for fast switching RSLSs. Design methods for subsystem observers and their organization for estimating the entire state are introduced. Convergence prope...
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作者：Deplano, Diego; Franceschelli, Mauro; Giua, Alessandro
作者单位：University of Cagliari
摘要：In this article, we propose two distributed control protocols for discrete-time multiagent systems, which solve the dynamic consensus problem on the max value. In this problem, each agent is fed an exogenous reference signal and has the objective to estimate and track the instantaneous and time-varying value of the maximum among all the signals fed to the network by exploiting only local and anonymous interactions among the agents. The first protocol achieves bounded steady-state and tracking ...
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作者：Kishida, Masako; Cetinkaya, Ahmet
作者单位：Research Organization of Information & Systems (ROIS); National Institute of Informatics (NII) - Japan
摘要：Stochastic linear quadratic control problems are considered from the viewpoint of risks. In particular, a worst-case conditional value-at-risk (CVaR) of quadratic objective function is minimized subject to additive disturbances whose first two moments of the distribution are known. The study focuses on three problems of finding the optimal feedback gain that minimizes the quadratic cost of: stationary distribution, one-step, and infinite time horizon. For the stationary distribution problem, i...
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作者：De, Souradip; Sahoo, Soumya Ranjan; Wahi, Pankaj
作者单位：Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Kanpur; Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Kanpur
摘要：The multiagent rendezvous problem for single- and double-integrator agents in the presence of unknown constant input and communication delays is investigated in this article. Existing works address the rendezvous problem by incorporating negative gain(s) into the distributed consensus protocol and showing that negative gain(s) expands the reachable set beyond the initial configuration of the agents' convex hull. On the contrary, the present control protocol ensures global reachability of a net...
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作者：Guaracy, Fernando H. D.; Ferreira, Luis H. C.
作者单位：Universidade Federal de Itajuba
摘要：In this article, the problem of synchronization of homogeneous linear multiagent systems considering a robust control and small gain theorem perspective is presented. The analyses are performed based on an auxiliary state feedback problem in which only the dynamics of a single agent is considered. This point of view allows an unified approach to continuous- and discrete-time cases and provides insights that, in addition to enabling the analysis of feasibility of the synchronization problem in ...
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作者：Polyakov, Andrey; Efimov, Denis; Ping, Xubin
作者单位：Xidian University; Centre National de la Recherche Scientifique (CNRS); CNRS - Institute for Information Sciences & Technologies (INS2I); Universite de Lille; Centrale Lille; Inria
摘要：The problem of finite-time stabilization of a linear plant with an optimization of both a settling time and an averaged/weighted control energy is studied using the concept of generalized homogeneity. It is shown that the optimal finite-time stabilizing control in this case can be designed by means of solving a simple linear algebraic equation. Robustness of the obtained control law is studied.
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作者：Somarakis, Christoforos; Liu, Guangyi; Motee, Nader
作者单位：Merck & Company; Lehigh University
摘要：We develop a framework to quantify systemic risk measures in a class of wide-area-control (WAC) laws in power networks in the presence of noisy and time-delayed sensory data. A closed-form calculation of the risk of phase incoherence in interconnected power networks is presented, and the effect of network parameters, information flow in WAC architecture, statistics of noise, and time delays are characterized. We show that in the presence of time-delay and noise, a fundamental tradeoff between ...
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作者：Shi, Lei; Li, Weihao; Shi, Mengji; Shi, Kaibo; Cheng, Yuhua
作者单位：University of Electronic Science & Technology of China; University of Electronic Science & Technology of China; Chengdu University
摘要：In social networks with mixed trust and distrust relationships, polarization is a common class of opinion evolutionary phenomena. Existing studies have generally believed that structural balance on networks is a crucial condition for the emergence of opinion polarization under DeGroot-style interactions. Unlike existing studies, this article aims to establish a new updating model based on DeGroot-style interactions, thereby relaxing the network structure requirement of achieving opinion polari...
