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作者：Ikeda, Takuya; Sakurama, Kazunori; Kashima, Kenji
作者单位：University of Kitakyushu; Kyoto University
摘要：This article treats an optimal scheduling problem of control nodes in networked systems. We newly introduce both the L-0 and l(0) constraints on control inputs to extract a time-varying small number of effective control nodes. As the cost function, we adopt the trace of the controllability Gramian to reduce the required control energy. Since the formulated optimization problem is combinatorial, we introduce a convex relaxation problem for its computational tractability. After a reformulation o...
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作者：Battilotti, Stefano
作者单位：Sapienza University Rome
摘要：We propose a framework for designing observers for noisy nonlinear systems with global convergence properties and performing robustness and noise sensitivity. This framework comes out from the combination of a state norm estimator with a chain of filters, adaptively tuned by the state norm estimator. The state estimate is sequentially processed through the chain of filters. Each filter contributes to improving, by a certain amount, the estimation error performances of the previous filter in te...
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作者：Liang, Weichao; Amini, Nina H.; Mason, Paolo
作者单位：CY Cergy Paris Universite; Universite Paris Saclay; Centre National de la Recherche Scientifique (CNRS)
摘要：In this article, we consider stochastic master equations describing the evolution of a multiqubit system interacting with electromagnetic fields undergoing continuous-time measurements. By considering multiple z-type (Pauli z matrix on different qubits) and x-type (Pauli x matrix on all qubits) measurements and one control Hamiltonian, we provide general conditions on the feedback controller and the control Hamiltonian ensuring almost sure exponential convergence to a predetermined Greenberger...
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作者：Ma, Dan
作者单位：Northeastern University - China
摘要：This article examines the delay range for robust consensus of unstable first-order agents by using proportional (P) and proportional-derivative (PD) control protocols subject to time-varying delays. The maximal delay range is defined by the delay consensus margin (DCM), which is a robustness measure within which consensus can be achieved robustly despite the presence of uncertain and time-varying delays. We apply an H-infinity-type small-gain analysis to multiagent systems, which results in ex...
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作者：Sharf, Miel; Zelazo, Daniel
作者单位：Technion Israel Institute of Technology
摘要：Fault detection and isolation is an area of engineering dealing with designing online protocols for systems that allow one to identify the existence of faults, pinpoint their exact location, and overcome them. We consider multi-agent systems, where faults correspond to the disappearance of links in the underlying graph, simulating communication failures between agents. We study the case in which the agents and controllers are maximal equilibrium-independent passive, and use the known connectio...
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作者：Liu, Hongzhe; Zheng, Wei Xing; Yu, Wenwu
作者单位：Western Sydney University; Southeast University - China; Southeast University - China
摘要：This article studies the convex optimization problem with general constraints, where its global objective function is composed of the sum of local objective functions. The objective is to design a distributed algorithm to cooperatively resolve the optimization problem under the condition that only the information of each node's own local cost function and its neighbors' states can be obtained. To this end, the optimality condition of the researched optimization problem is developed in terms of...
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作者：Terasaki, Shun; Sato, Kazuhiro
作者单位：University of Tokyo
摘要：We consider minimal controllability problems (MCPs) on linear structural descriptor systems. We address two problems of determining the minimum number of input nodes such that a descriptor system is structurally controllable. We show that MCP0 for structural descriptor systems can be solved in polynomial time. This is the same as the existing results on typical structural linear time-invariant (LTI) systems. However, the derivation of the result is considerably different because the derivation...
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作者：Gerencser, Balazs; Gerencser, Laszlo
作者单位：HUN-REN; HUN-REN Alfred Renyi Institute of Mathematics; Eotvos Lorand University; HUN-REN; HUN-REN Institute for Computer Science & Control
摘要：The problems discussed in this article are motivated by general ratio consensus algorithms, introduced by Kempe et al. in 2003 in a simple form as the push-sum algorithm, later extended by Benezit et al. in 2010 under the name weighted gossip algorithm. We consider a communication protocol described by a strictly stationary, ergodic, sequentially primitive sequence of nonnegative matrices, applied iteratively to a pair of fixed initial vectors, the components of which are called values and wei...
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作者：Wang, Xin; Xie, Wei; Ye, Zhi-Sheng
作者单位：Shanghai Jiao Tong University; South China University of Technology; National University of Singapore
摘要：This article studies the warranty reserve planning problem for a firm that makes electronic products and maintains a reserve fund for warranty claims. For accounting purposes, the reserve fund is adjusted periodically. We model this problem in a multiperiod single-product setting.We propose a model that incorporates the randomness of product sales and failures to explicitly characterize the time-varying behavior of the warranty demand, which allows the firm to dynamically manage the reserve fu...
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作者：Aghajan, Adel; Touri, Behrouz
作者单位：University of California System; University of California San Diego
摘要：In this article, we consider time-varying distributed averaging dynamics. Motivated by a necessary condition on the ergodicity, we provide a sufficient condition for the ergodicity of such dynamics. We show that if groups of agents are connected using a directed acyclic graph containing a spanning directed rooted tree and the averaging dynamics restricted to each group is P*, then the dynamics over the whole network is ergodic. In particular, this provides a general condition for convergence o...
