-
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 ...
-
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...
-
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...
-
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 ...
-
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.
-
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 ...
-
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...
-
作者：Wen, Guanghui; Lv, Yuezu; Zheng, Wei Xing; Zhou, Jialing; Fu, Junjie
作者单位：Southeast University - China; Beijing Institute of Technology; Western Sydney University
摘要：The notion of network robustness reported in some existing literature well characterizes the graph-theoretic properties of networked agent systems (NASs) with a fixed communication graph for seeking resilient consensus. Yet, our systematic understanding of the graph properties for achieving resilient consensus of NASs with time-varying communication graphs remains limited. This study aims to investigate the resilient consensus problem of NASs with misbehaving agents and time-varying communicat...
-
作者：Geng, Li-Hui; Wills, Adrian George; Ninness, Brett; Schon, Thomas Bo
作者单位：Tianjin University of Technology & Education; University of Newcastle; University of Newcastle; Uppsala University
摘要：This article addresses the problem of computing fixed-interval smoothed state estimates of a linear time-varying Gaussian stochastic system. There already exist many algorithms that perform this computation, but all of them impose certain restrictions on system matrices in order for them to be applicable, and the restrictions vary considerably between the various existing algorithms. This article establishes a new sufficient condition for the fixed-interval smoothing density to exist in a Gaus...
-
作者：Khosravi, M.; Smith, R. S.
作者单位：Delft University of Technology; Swiss Federal Institutes of Technology Domain; ETH Zurich
摘要：In this article, we consider the problem of system identification when side-information is available on the steady-state gain (SSG) of the system. We formulate a general nonparametric identification method as an infinite-dimensional constrained convex program over the reproducing kernel Hilbert space (RKHS) of stable impulse responses. The objective function of this optimization problem is the empirical loss regularized with the norm of RKHS, and the constraint is considered for enforcing the ...
