3期

最新文章

• Computation of the Distance-Based Bound on Strong Structural Controllability in Networks AI翻译
  作者：Shabbir, Mudassir; Abbas, Waseem; Yazcoglu, A. Yasin; Koutsoukos, Xenofon
  作者单位：Vanderbilt University; University of Texas System; University of Texas Dallas; University of Minnesota System; University of Minnesota Twin Cities
  摘要：In this article, we study the problem of computing a tight lower bound on the dimension of the strong structurally controllable subspace (SSCS) in networks with Laplacian dynamics. The bound is based on a sequence of vectors containing the distances between leaders (nodes with external inputs) and followers (remaining nodes) in the underlying network graph. Such vectors are referred to as the distance-to-leaders vectors. We give exact and approximate algorithms to compute the longest sequences...
• Predictor-Based Global Sampled-Data Output Feedback Stabilization for Nonlinear Uncertain Systems Subject to Delayed Output AI翻译
  作者：Sun, Jiankun; Yang, Jun; Li, Shihua; Zeng, Zhigang
  作者单位：Huazhong University of Science & Technology; Loughborough University; Southeast University - China
  摘要：In this article, we address the problem of global sampled-data output feedback stabilization for a class of nonlinear uncertain systems with delayed output using the continuous-discrete method. Thanks to the prediction technique and feedback domination method, a novel coupled design method of predictor-based continuous-discrete observer and linear controller is proposed when only delayed sampled-data output is accessible. The proposed predictor-based observer can effectively estimate the unkno...
• On Semi-Global Exponential Stability Under Sampling for Locally Lipschitz Time-Delay Systems AI翻译
  作者：Di Ferdinando, Mario; Pepe, Pierdomenico; Gennaro, Stefano Di
  作者单位：University of L'Aquila
  摘要：In this article, the stability preservation problem for locally Lipschitz nonlinear time-delay systems, by emulation of continuous-time dynamic output feedback controllers, is studied. Sufficient Lyapunov-like conditions are provided such that, by suitably fast sampling, the Euler emulation of continuous-time dynamic output feedback controllers ensures the semiglobal exponential stability of the related sampled-data closed-loop system. If other emulation schemes than the Euler one are used, pr...
• Optimal Sensor Scheduling Under Intermittent Observations Subject to Network Dynamics AI翻译
  作者：Hmedi, Hassan; Carroll, Johnson; Arapostathis, Ari
  作者单位：University of Texas System; University of Texas Austin; University of Johannesburg
  摘要：Motivated by various distributed control applications, we consider a linear system with Gaussian noise observed by multiple sensors which transmit measurements over a dynamic lossy network. We characterize the stationary optimal sensor scheduling policy for the finite horizon, discounted, and long-term average cost problems and show that the value iteration algorithm converges to a solution of the average cost problem. We further show that the suboptimal policies provided by the rolling horizo...
• Event-Triggered Model Reference Adaptive Control for Linear Partially Time-Variant Continuous-Time Systems With Nonlinear Parametric Uncertainty AI翻译
  作者：Jiang, Yi; Shi, Dawei; Fan, Jialu; Chai, Tianyou; Chen, Tongwen
  作者单位：Northeastern University - China; Northeastern University - China; City University of Hong Kong; Beijing Institute of Technology; University of Alberta
  摘要：In this work, we develop an event-triggered adaptive control approach for solving the state tracking problem of linear partially time-variant continuous-time systems with the nonlinear state-dependent matched parametric uncertainty under unknown system dynamics. First, an event-triggered model reference adaptive controller is designed, which is composed of event-triggered adaptive laws based on the event-updated information and an event-triggering condition depending on the state tracking erro...
• Distributed Filtering Under Constrained Bit Rate Over Wireless Sensor Networks: Dealing With Bit Rate Allocation Protocol AI翻译
  作者：Li, Jun-Yi; Wang, Zidong; Lu, Renquan; Xu, Yong
  作者单位：Guangdong University of Technology; Guangdong University of Technology; Brunel University
  摘要：This article is concerned with the distributed filtering issue for linear discrete-time systems under bounded noises and constrained bit rate over wireless sensor networks. The communication between different sensor nodes is implemented via a wireless digital communication network with limited bandwidth. A bit rate constraint, which is subject to the so-called bandwidth allocation strategy, is placed to quantify the effect of the network bandwidth on the distributed filtering performance. An i...
• Global Asymptotic Tracking for Marine Vehicles Using Adaptive Hybrid Feedback AI翻译
  作者：Basso, Erlend A. A.; Schmidt-Didlaukies, Henrik M. M.; Pettersen, Kristin Y. Y.; Sorensen, Asgeir J. J.
  作者单位：Norwegian University of Science & Technology (NTNU)
  摘要：This article presents an adaptive hybrid feedback control law for global asymptotic tracking of a hybrid reference system for marine vehicles in the presence of parametric modeling errors. The reference system is constructed from a parameterized loop and a speed assignment specifying the motion along the path, which decouples the geometry of the path from the motion along the path. During flows, the hybrid feedback consists of a proportional-derivative action and an adaptive feedforward term, ...
• Nondisturbing Extremum Seeking Control for Multiagent Industrial Systems AI翻译
  作者：Haring, Mark; Fossoy, Synne; Silva, Thiago Lima; Pavlov, Alexey
  作者单位：SINTEF; Norwegian University of Science & Technology (NTNU); SINTEF; Norwegian University of Science & Technology (NTNU)
  摘要：Industrial applications of extremum seeking control (ESC) can be a hit and miss affair. Although a gain in performance can be achieved, the dither applied to excite the system causes unwanted fluctuations in the performance of the system. The fluctuations in systems with a single extremum seeking loop are generally small. However, for systems with many extremum seeking loops, the fluctuations in each loop may add up to an intolerable amount of fluctuation in the total performance. In this arti...
• A Progressive Bayesian Filtering Framework for Nonlinear Systems With Heavy-Tailed Noises AI翻译
  作者：Zhang, Jie; Yang, Xusheng; Zhang, Wen-An
  作者单位：Zhejiang University of Technology
  摘要：This article studies the Bayesian filtering problem for nonlinear systems with heavy-tailed noises. Because of the nonlinearity and heavy tail characteristics, the Gaussian distribution or particle sets may fail to express the posterior probability density distribution; thus, the progressive Bayesian filtering framework is proposed. With the filtering framework, the measurement update is divided into several steps, and the intermediate posterior distributions are chosen as the importance propo...
• Comments on New Results on the Characterization of Strictly Positive Real Matrix Transfer Functions AI翻译
  作者：Hakimi-Moghaddam, Mojtaba; Ferrante, Augusto
  作者单位：Quchan University of Technology; University of Padua
  摘要：In this note, we address an inconsistency in our recent article (Hakimi-Moghaddam and Ferrante, 2021). In particular, we provide an example showing that Lemma III.1 of that article is not correct. We show how the statement of this lemma can be modified in order to resolve this inconsistency. We also describe how this modification impact the other results of the article. Notwithstanding the fact that Lemma III.1 plays a central role in the proof of the main result of (Hakimi-Moghaddam and Ferra...