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作者：Chen, Yiyue; Hashemi, Abolfazl; Vikalo, Haris
作者单位：University of Texas System; University of Texas Austin; Purdue University System; Purdue University
摘要：In this article, we consider the problem of decentralized optimization over time-varying directed networks. The network nodes can access only their local objectives, and aim to collaboratively minimize a global function by exchanging messages with their neighbors. Leveraging sparsification, gradient tracking, and variance reduction, we propose a novel communication-efficient decentralized optimization scheme that is suitable for resource-constrained time-varying directed networks. We prove tha...
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作者：Como, Giacomo; Durand, Stephane; Fagnani, Fabio
作者单位：Polytechnic University of Turin; Lund University
摘要：We study an optimal targeting problem for super-modular games with binary actions and finitely many players. The considered problem consists in the selection of a subset of players of minimum size, such that when the actions of these players are forced to a controlled value while the others are left to repeatedly play a best response action, the system will converge to the greatest Nash equilibrium of the game. Our main contributions consist in showing that the problem is NP-complete and in pr...
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作者：Farjam, Tahmoores; Wymeersch, Henk; Charalambous, Themistoklis
作者单位：Aalto University; Chalmers University of Technology
摘要：We consider the distributed channel access problem for a system consisting of multiple control subsystems that close their loop over a shared wireless network. We propose a distributed method for providing deterministic channel access without requiring explicit information exchange between the subsystems. This is achieved by utilizing timers for prioritizing channel access with respect to a local cost which we derive by transforming the control objective cost to a form that allows its local co...
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作者：Mancilla-Aguilar, Jose Luis; Haimovich, Hernan
作者单位：National University of Rosario
摘要：It is shown that impulsive systems of nonlinear, time-varying, and/or switched form that allow a stable global state weak linearization are jointly input-to-state stable (ISS) under small inputs and integral ISS. The system is said to allow a global state weak linearization if its flow and jump equations can be written as a (time-varying, switched) linear part plus a (nonlinear) perturbation satisfying a bound of affine form on the state. This bound reduces to a linear form under zero input bu...
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作者：Wang, Wei; Zhou, Jing; Wen, Changyun; Long, Jiang
作者单位：Beihang University; University of Agder; Nanyang Technological University
摘要：Although it is common in network control systems that the sensor and control signals are transmitted via a common communication network, no result is available in investigating the stabilization problem for uncertain nonlinear systems with both input and state quantization. The issue is solved in this article, by presenting an adaptive backstepping based control algorithm for the systems with sector bounded input/state quantizers. In addition to overcome the difficulty to proceed recursive des...
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作者：Loria, Antonio; Nuno, Emmanuel; Panteley, Elena
作者单位：Universite Paris Saclay; Centre National de la Recherche Scientifique (CNRS); Universidad de Guadalajara; ITMO University
摘要：We present a solution to the problem of formation consensus control of second-order nonholonomic systems via output feedback. We contribute with a distributed consensus controller for force-controlled nonholonomic systems under the assumption that the forward and angular velocities are not measurable. Our main statement establishes uniform global asymptotic stability for the closed-loop system; this guarantees robustness with respect to bounded disturbances, in the sense of Malkin's total stab...
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作者：Mitra, Aritra; Richards, John A.; Bagchi, Saurabh; Sundaram, Shreyas
作者单位：Purdue University System; Purdue University; United States Department of Energy (DOE); Sandia National Laboratories
摘要：We study the problem of designing a distributed observer for an LTI system over a time-varying communication graph. The limited existing work on this topic imposes various restrictions either on the observation model or on the sequence of communication graphs. In contrast, we propose a single-time-scale distributed observer that works under mild assumptions. Specifically, our communication model only requires strong-connectivity to be preserved over nonoverlapping, contiguous intervals that ar...
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作者：Moon, Jun; Basar, Tamer
作者单位：Hanyang University; University of Illinois System; University of Illinois Urbana-Champaign
摘要：In this article, we consider the stochastic optimal control problem for (forward) stochastic differential equations (SDEs) with jump diffusions and random coefficients under a recursive-type objective functional captured by a backward SDE (BSDE). Due to the jump-diffusion process with random coefficients in both the constraint (forward SDE) and the recursive BSDE objective functional, the associated Hamilton-Jacobi-Bellman equation (HJBE) is an integro-type second-order nonlinear stochastic PD...
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作者：Vila-Valls, Jordi; Chaumette, Eric; Vincent, Francois; Closas, Pau
作者单位：Universite de Toulouse; Institut Superieur de l'Aeronautique et de l'Espace (ISAE-SUPAERO); Northeastern University
摘要：It is well known that Wiener filter and Kalman filter (KF) like techniques are sensitive to misspecified covariances, uncertainties in the system matrices, filter initialization, or unwanted system behaviors. A possible solution to robustify these estimation techniques is to impose linear constraints (LCs). In this article: 1) we introduce a general class of linearly constrained KF (LCKF), where a set of nonstationary LCs can be set at every time step; 2) explore the use of such LCs to mitigat...
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作者：Xie, Huahui; Dai, Li; Lu, Yuchen; Xia, Yuanqing
作者单位：Beijing Institute of Technology
摘要：This article proposes a novel disturbance rejection model predictive control (DRMPC) framework to improve the robustness of model predictive control (MPC) for a broad class of input-affine nonlinear systems with constraints and state-dependent disturbances. The proposed controller includes two parts-a disturbance compensation input and an optimal MPC control input. The former one is designed to compensate for the matched disturbance actively. This is made possible via a disturbance observer th...
