IEEE Transactions on Automatic Control

最新文章

• Distributed Big-Data Optimization via Blockwise Gradient Tracking AI翻译
  作者：Notarnicola, Ivano; Sun, Ying; Scutari, Gesualdo; Notarstefano, Giuseppe
  作者单位：University of Bologna; Purdue University System; Purdue University
  摘要：We study distributed big-data nonconvex optimization in multiagent networks. We consider the (constrained) minimization of the sum of a smooth (possibly) nonconvex function, i.e., the agents' sum-utility, plus a convex (possibly) nonsmooth regularizer. Our interest is on big-data problems in which there is a large number of variables to optimize. If treated by means of standard distributed optimization algorithms, these large-scale problems may be intractable due to the prohibitive local compu...
• Online Stochastic Optimization With Time-Varying Distributions AI翻译
  作者：Cao, Xuanyu; Zhang, Junshan; Poor, H. Vincent
  作者单位：University of Illinois System; University of Illinois Urbana-Champaign; Arizona State University; Arizona State University-Tempe; Princeton University
  摘要：This article studies online stochastic optimization, where the random parameters follow time-varying distributions. In each time slot, after a control variable is determined, a sample drawn from the current distribution is revealed as feedback information. This form of stochastic optimization has broad applications in online learning and signal processing, where the underlying ground-truth is inherently time-varying, e.g., tracking a moving target. Dynamic optimal points are adopted as the per...
• Discrete-Time Distributed Observers Over Jointly Connected Switching Networks and an Application AI翻译
  作者：Liu, Tao; Huang, Jie
  作者单位：Chinese University of Hong Kong
  摘要：In this article, we first establish an exponential stability result for a class of linear switched systems and then apply this result to show the existence of the distributed observer for a discrete-time leader system over jointly connected switching networks. Then, we further develop the adaptive distributed observer for the discrete-time leader system over jointly connected switching networks, which has the advantage over the distributed observer in that, it does not require that every follo...
• Explicit Construction of Stabilizing Robust Avoidance Controllers for Linear Systems With Drift AI翻译
  作者：Braun, Philipp; Kellett, Christopher M.; Zaccarian, Luca
  作者单位：University of Newcastle; Australian National University; Centre National de la Recherche Scientifique (CNRS); Universite de Toulouse; University of Trento
  摘要：We propose a constructive design method for linear systems with a nontrivial drift term, guaranteeing robust global asymptotic stability of the origin of the closed-loop system, as well as robust obstacle avoidance. To obtain discontinuous input actions, our controller is designed in the framework of hybrid systems. Using our proposed hybrid controller, we demonstrate that solutions do not enter a sphere, which we term an avoidance neighborhood, around specified isolated points. The constructi...
• An Algebraic Formula for Performance Bounds of a Weighted H∞ Optimal Control Problem AI翻译
  作者：Peters, Andres A.; Vargas, Francisco J.; Chen, Jie
  作者单位：Universidad Tecnologica Metropolitana; Universidad Tecnica Federico Santa Maria; City University of Hong Kong
  摘要：This article provides performance bounds for a particular H-infinity model-matching problem. We consider scalar linear time-invariant plants in a one-degree-of-freedom control loop. We obtained explicit expressions for the Gramians needed when Nehari's theorem is applied to this problem, leading to a simple algebraic equation for the optimal performance. This formula sheds light upon the effect that nonminimum-phase zeros have on the optimal performance and yields easily computable bounds and ...
• On Realizability of Specific Biquadratic Impedances as Three-Reactive Seven-Element Series-Parallel Networks for Inerter-Based Mechanical Control AI翻译
  作者：Wang, Kai; Chen, Michael Z. Q.
  作者单位：Jiangnan University; Nanjing University of Science & Technology
  摘要：This article solves the minimal realizability problem of a specific biquadratic impedance with double poles and zeros as a three-reactive-element series-parallel network, where the main conclusion shows that any three-reactive seven-element series-parallel network realizing such a specific biquadratic impedance can always be equivalent to a three-reactive six-element series-parallel network (containing three resistors). First, necessary and sufficient conditions are derived for such biquadrati...
• Event-Triggered Stabilization of a Class of Nonlinear Time-Delay Systems AI翻译
  作者：Zhang, Pengpeng; Liu, Tengfei; Jiang, Zhong-Ping
  作者单位：Northeastern University - China; New York University
  摘要：This article presents a solution to event-triggered stabilization of a class of nonlinear time-delay systems in the strict-feedback form. Set-valued maps are employed to handle the event-triggered sampling errors, and the closed-loop system is transformed into an interconnection of input-to-state stable subsystems through a set-valued constructive design. The event trigger is designed to satisfy a cyclic-small-gain condition, and the stability of the closed-loop event-triggered system is guara...
• Optimal Control on Disconnected Sets Using Extreme Point Relaxations and Normality Approximations AI翻译
  作者：Harris, Matthew W.
  作者单位：Utah System of Higher Education; Utah State University
  摘要：This article presents new mathematical results for exact and approximate relaxations of nonconvex optimal control problems defined on disconnected control sets. The exact relaxations are based upon extreme point relaxations wherein the relaxed control set is constructed so that its extreme points belong to the original set. A system property required for exactness is normality. In the absence of normality, control set approximations and system dynamic perturbations are introduced so that norma...
• Multipopulation Aggregative Games: Equilibrium Seeking via Mean-Field Control and Consensus AI翻译
  作者：Kebriaei, Hamed; Sadati-Savadkoohi, S. Jafar; Shokri, Mohammad; Grammatico, Sergio
  作者单位：University of Tehran; Institute for Research in Fundamental Sciences IPM; Delft University of Technology
  摘要：In this article, we extend the theory of deterministic mean-field/aggregative games to multipopulation games. We consider a set of populations, each managed by a population coordinator (PC), of selfish agents playing a global noncooperative game, whose cost functions are affected by an aggregate term across all agents from all populations. In particular, we impose that the agents cannot exchange information between themselves directly; instead, only a PC can gather information on its own popul...
• Exponential Stabilization of Unstable Bilinear Systems in Finite- and Infinite-Dimensional Spaces AI翻译
  作者：Ouzahra, Mohamed
  作者单位：Sidi Mohamed Ben Abdellah University of Fez
  摘要：This article discusses the uniform exponential stabilization of bilinear systems with multiplicative control inputs. We first consider the case of finite-dimensional bilinear systems, and we present stabilization results concerning the case of open-loop stable systems using a bang-bang feedback control. For open-loop unstable systems, a normalized quadratic time-varying feedback control is proposed. These results are then applied to infinite-dimensional case. Necessary and sufficient condition...