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• Resilient Average Consensus With Adversaries via Distributed Detection and Recovery AI翻译
  作者：Yuan, Liwei; Ishii, Hideaki
  作者单位：Hunan University; University of Tokyo
  摘要：In this article, we study the problem of resilient average consensus (RAC) in multiagent systems where some of the agents are subject to failures or attacks. The objective of RAC is for nonfaulty/normal agents to converge to the average of their initial values despite the erroneous effects from malicious agents. To this end, we propose a successful distributed iterative RAC algorithm for the multiagent networks with general directed topologies. The proposed algorithm has two parts at each iter...
• Distributed Nash Equilibrium Seeking in Merely Monotone Games Using an Event- and Switching-Activated Communication Scheme AI翻译
  作者：Ding, Lei; Ye, Maojiao; Han, Qing-Long; Jia, Guobiao
  作者单位：Nanjing University of Posts & Telecommunications; Nanjing University of Science & Technology; Swinburne University of Technology
  摘要：This article is concerned with distributed dynamic event-triggered Nash equilibrium seeking in merely monotone games under switching communication topologies. Based on a regularization algorithm, a gradient play and a leader-following consensus protocol, a distributed Nash equilibrium seeking strategy incorporating an event- and switching-activated communication scheme is established. More specifically, the regularization algorithm is involved to compensate for the absence of strict/strong mon...
• Maximal Tolerable Fault Set of Robust MPC for Passive Fault Tolerance With Predefined Performance AI翻译
  作者：Mi, Yilin; Xu, Feng; Wang, Xueqian; Liu, Yu
  作者单位：Harbin Institute of Technology; Tsinghua University; Tsinghua Shenzhen International Graduate School
  摘要：this article, we develop a method to compute ellipsoidal maximal tolerable fault (e-MTF) sets of robust model predictive control (MPC) for passive fault tolerance. The maximal tolerable fault set serves as an index to evaluate the passive fault- tolerance capabilities of robust MPC frameworks. In particular, a regulation problem for a discrete-time linear time-invariant system with an additive fault model is considered. We construct convex optimization problems to compute the e-MTF sets for th...
• Preset-Trajectory-Based Tracking Control of a Class of Mismatched Uncertain Systems AI翻译
  作者：Shi, Wenrui; Keliris, Christodoulos; Hou, Mingzhe; Duan, Guangren; Polycarpou, Marios M.
  作者单位：Harbin Institute of Technology; University of Cyprus; University of Cyprus
  摘要：Existing function augmented sliding mode control approaches based on preset trajectories are applicable only to matched uncertain systems. In this article, two preset-trajectory-based tracking control methods are proposed for a class of mismatched uncertain systems utilizing the backstepping method. The first method is the preset-trajectory-based practical prescribed-time tracking control method, which can guarantee that the output tracking error converges to a prescribed zone in a prescribed ...
• Time- and Event-Triggered Communication for Multi-Agent Systems-Part I: General Framework AI翻译
  作者：Dolk, V. S.; Scheres, K. J. A.; Postoyan, R.; Heemels, W. P. M. H.
  作者单位：Eindhoven University of Technology; Universite de Lorraine; Centre National de la Recherche Scientifique (CNRS)
  摘要：We present a framework for the design of time- and event-triggered communication schemes for a broad class of multiagent systems (MAS). The framework is general in the sense that we consider a class of heterogeneous nonlinear MAS with directed communication graphs subject to disturbances and the inevitable imperfections induced by packet-based networked communication, such as time-varying transmission delays and intervals. Under suitable conditions, the designed distributed time- or event-trig...
• Denial-of-Service Attacks on Cyber-Physical Systems Against Linear Quadratic Control: A Stackelberg-Game Analysis AI翻译
  作者：Xing, Wei; Zhao, Xudong; Li, Yuzhe; Liu, Le
  作者单位：Hainan University; Dalian University of Technology; Northeastern University - China
  摘要：This article concentrates on the linear quadratic control of cyber-physical systems subject to denial-of-service attacks. A Stackelberg game framework is proposed to analyze the strategic interaction between a sensor and an attacker considering a standard block fading wireless communication channel. The reward function composing of the linear quadratic control consumption and the power consumption is provided on account of energy constraints of the sensor and the attacker. To proactively overc...
• Radius Analysis-Based Control for Switched Positive Systems AI翻译
  作者：Fei, Zhongyang; Chen, Weizhong; Yang, Hao; Sun, Xi-Ming
  作者单位：Dalian University of Technology; Dalian University of Technology; Xi'an Polytechnic University; Harbin Institute of Technology; Nanjing University of Aeronautics & Astronautics
  摘要：This article investigates the dynamic output feedback control for switched positive systems with mode-dependent persistent dwell time (MPDT) switching and unmeasurable disturbances. Unlike the previous results, in this article, we propose a radius analysis-based control method. By constructing the time-varying state zonotope and guaranteeing its dual convergence, dynamic output feedback controllers are designed, and then the stability of the closed-loop system and convergent state boundaries a...
• Convergence Analysis of Distributed Generalized Nash Equilibria Seeking Algorithm With Asynchrony and Delays AI翻译
  作者：Li, Huaqing; Ran, Liang; Zheng, Lifeng; Li, Zhe; Hu, Jinhui; Li, Jun; Huang, Tingwen
  作者单位：Southwest University - China; Central South University; City University of Hong Kong; Shenzhen University of Advanced Technology
  摘要：This article considers a class of noncooperative games in which the feasible decision sets of all players are coupled together by a coupled inequality constraint. Adopting the variational inequality formulation of the game, we first introduce a new local edge-based equilibrium condition with full information. Considering challenges when communication delays occur, we then devise an asynchronous distributed algorithm to seek a generalized Nash equilibrium. This asynchronous scheme arbitrarily a...
• Maximization of Gain/Phase Margins by PID Control AI翻译
  作者：Mao, Qi; Xu, Yong; Chen, Jianqi; Chen, Jie; Georgiou, Tryphon T.
  作者单位：Nanjing Normal University; City University of Hong Kong; Guangdong University of Technology; Nanjing University; City University of Hong Kong; University of California System; University of California Irvine
  摘要：Proportional-integral-derivative (PID) control has been the workhorse of control technology for about a century. Yet to this day, designing and tuning PID controllers relies mostly on either tabulated rules (Ziegler-Nichols) or on classical graphical techniques (Bode). Our goal in this article is to take a fresh look on PID control in the context of optimizing stability margins for low-order (first- and second-order) linear time-invariant systems. Specifically, we seek to derive explicit expre...
• Stochastic Halfspace Approximation Method for Convex Optimization With Nonsmooth Functional Constraints AI翻译
  作者：Singh, Nitesh Kumar; Necoara, Ion
  作者单位：National University of Science & Technology POLITEHNICA Bucharest
  摘要：In this work, we consider convex optimization problems with smooth objective function and nonsmooth functional constraints. We propose a new stochastic gradient algorithm, called the stochastic halfspace approximation method (SHAM), to solve this problem, where at each iteration we first take a gradient step for the objective function and then we perform a projection step onto one halfspace approximation of a randomly chosen constraint. We propose various strategies to create this stochastic h...