IEEE Transactions on Automatic Control

最新文章

• Fixed-Time Lyapunov Criteria of Stochastic Nonlinear Systems and Its Generalization AI翻译
  作者：Min, Huifang; Shi, Shang; Xu, Shengyuan; Guo, Jian; Zhang, Zhengqiang
  作者单位：Nanjing University of Science & Technology; Hohai University; Qufu Normal University
  摘要：This study investigates the fixed-time stability of stochastic nonlinear systems described by Ito differential equations. The improved fixed-time Lyapunov theorem is given and an important corollary is obtained. It is proved that the upper-bound estimate of the settling time is less conservative. We establish a new definition of practically fixed-time stability in probability and propose the corresponding Lyapunov criterion theorem. In addition, different cases of the parameters are discussed ...
• Convergence Analysis of Dual Decomposition Algorithm in Distributed Optimization: Asynchrony and Inexactness AI翻译
  作者：Su, Yifan; Wang, Zhaojian; Cao, Ming; Jia, Mengshuo; Liu, Feng
  作者单位：Tsinghua University; Shanghai Jiao Tong University; University of Groningen; Swiss Federal Institutes of Technology Domain; ETH Zurich
  摘要：Dual decomposition is widely utilized in the distributed optimization of multiagent systems. In practice, the dual decomposition algorithm is desired to admit an asynchronous implementation due to imperfect communication, such as time delay and packet drop. In addition, computational errors also exist when the individual agents solve their own subproblems. In this article, we analyze the convergence of the dual decomposition algorithm in the distributed optimization when both the communication...
• A Worst-Case Approach to Safety and Reference Tracking for Cyber-Physical Systems Under Network Attacks AI翻译
  作者：Gheitasi, Kian; Lucia, Walter
  作者单位：Concordia University - Canada
  摘要：In this technical note, the safety and reference tracking control problems for cyber-physical systems (CPSs) equipped with authenticated communication channels are addressed. In this class of CPSs, network attacks can break the feedback loop at two different points for an arbitrarily long period. In this scenario, we design a novel control architecture that, by taking a worst-case approach, aims to preserve the safety of the systems while minimizing, whenever possible, the tracking performance...
• Identifiability Analysis of Noise Covariances for LTI Stochastic Systems With Unknown Inputs AI翻译
  作者：Kong, He; Sukkarieh, Salah; Arnold, Travis J.; Chen, Tianshi; Mu, Biqiang; Zheng, Wei Xing
  作者单位：Southern University of Science & Technology; Southern University of Science & Technology; University of Sydney; Shenzhen Research Institute of Big Data; The Chinese University of Hong Kong, Shenzhen; Shenzhen Research Institute of Big Data; The Chinese University of Hong Kong, Shenzhen; Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS; Western Sydney University
  摘要：existing works on optimal filtering of linear time invariant (LTI) stochastic systems with arbitrary unknown inputs assume perfect knowledge of the covariances of the noises in the filter design. This is impractical and raises the question of whether and under what conditions one can identify the process and measurement noise covariances (denoted as Q and R, respectively) of systems with unknown inputs. This article considers the identifiability of Q/R using the correlation-based measurement d...
• Distributed Control of Nonlinear Systems With Unknown Time-Varying Control Coefficients: A Novel Nussbaum Function Approach AI翻译
  作者：Liu, Zongcheng; Huang, Jiangshuai; Wen, Changyun; Su, Xiaojie
  作者单位：Air Force Engineering University; Northwestern Polytechnical University; Chongqing University; Nanyang Technological University
  摘要：In this article, distributed control of uncertain multiagent systems (MAS) with completely unknown nonlinearities, unknown time-varying control coefficients, and multiple unknown control directions is investigated. First, a new theorem with a series of novel Nussbaum functions are presented, which solve the outstanding problem in control of nonlinear systems with unknown time-varying control coefficients and unknown signs. Second, global consensus of MAS with unknown time-varying control coeff...
• Event-Triggered Control for Safety-Critical Systems With Unknown Dynamics AI翻译
  作者：Xiao, Wei; Belta, Calin; Cassandras, Christos G.
  作者单位：Massachusetts Institute of Technology (MIT); Boston University; Boston University
  摘要：This article addresses the problem of safety-critical control for multiagent systems with unknown dynamics in unknown environments. It has been shown that stabilizing affine control systems to desired (sets of) states while optimizing quadratic costs subject to state and control constraints can be reduced to a sequence of quadratic programs (QPs) by using control barrier functions (CBFs) and control Lyapunov functions (CLFs). One of the main challenges in this approach is obtaining accurate sy...
• Rendezvous Control Design for the Generalized Cucker-Smale Model on Riemannian Manifolds AI翻译
  作者：Li, Xiaoyu; Wu, Yuhu; Zhu, Jiandong
  作者单位：Nanjing University of Posts & Telecommunications; Dalian University of Technology; Nanjing Normal University
  摘要：In this article, we consider a rendezvous problem for the generalized Cucker-Smale model, which is a double-integrator multiagent system, on complete Riemannian manifolds. With the help of the covariant derivative, parallel transport, and logarithm map on the Riemannian manifold, we design a rendezvous feedback law that enables all agents to converge at a given target in the Riemannian manifold, under some a priori conditions. Furthermore, we consider three concrete complete Riemannian manifol...
• Watermark-Based Proactive Defense Strategy Design for Cyber-Physical Systems With Unknown-but-Bounded Noises AI翻译
  作者：Liu, Hao; Li, Yuzhe; Han, Qing-Long; Raissi, Tarek
  作者单位：Shenyang Aerospace University; Northeastern University - China; Swinburne University of Technology; heSam Universite; Conservatoire National Arts & Metiers (CNAM)
  摘要：In this article, a novel proactive attack defense strategy is proposed to deal with the secure remote estimation issue in cyber-physical systems with unknown-but-bounded noises in the presence of man-in-the-middle attacks. It is assumed that the residue calculated by the smart sensor is sent to the remote estimator and the abnormal intrusion detector via a wireless network, and the watermark is assumed to belong to a zonotope. In order to guarantee the detection rate, the data processes and th...
• Robust Output Feedback Control Design in the Presence of Sporadic Measurements AI翻译
  作者：Merco, Roberto; Ferrante, Francesco; Sanfelice, Ricardo G.; Pisu, Pierluigi
  作者单位：Clemson University; University of Perugia; University of California System; University of California Santa Cruz
  摘要：feedback control design for linear time -invariant systems in the presence of sporadic measurements and exogenous perturbations is addressed. To cope with the sporadic availability of measurements of the output, a hybrid dynamic out-put feedback controller equipped with a holding device whose state is reset when a new measurement is available is designed. The closed-loop system, resulting from the interconnection of the controller and the plant, is augmented with a timer variable trig-gering t...
• Synthesis of the Supremal Covert Attacker Against Unknown Supervisors by Using Observations AI翻译
  作者：Tai, Ruochen; Lin, Liyong; Zhu, Yuting; Su, Rong
  作者单位：Nanyang Technological University
  摘要：In this article, we consider the problem of synthesizing the supremal covert damage-reachable attacker, in the setup where the model of the supervisor is unknown to the adversary but the adversary has recorded a (prefix-closed) finite set of observations of the runs of the closed-loop system. The synthesized attacker needs to ensure both the damage-reachability and the covertness against all the supervisors, which are consistent with the given set of observations. There is a gap between the de...