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作者：Wang, Yongqiang; Nedic, Angelia
作者单位：Clemson University; Arizona State University; Arizona State University-Tempe
摘要：Decentralized optimization enables a network of agents to cooperatively optimize an overall objective function without a central coordinator and is gaining increased attention in domains as diverse as control, sensor networks, data mining, and robotics. However, the information sharing among agents in decentralized optimization also discloses agents' information, which is undesirable or even unacceptable when involved data are sensitive. This article proposes two gradient-based decentralized o...
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作者：Xie, Yifan; Li, Shaoyuan; Yin, Xiang
作者单位：University of Stuttgart; Shanghai Jiao Tong University; Shanghai Jiao Tong University
摘要：In this article, we investigate both qualitative and quantitative synthesis of optimal privacy-enforcing supervisors for partially observed discrete-event systems. We consider a dynamic system whose information flow is partially available to an intruder, which is modeled as a passive observer. We assume that the system has a secret that does not want to be revealed to the intruder. Our goal is to synthesize a supervisor that controls the system in a least-restrictive manner such that the close...
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作者：Lu, Xiaodong; Wang, Ting; Zhao, Yanlong
作者单位：Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS; University of Science & Technology Beijing; University of Science & Technology Beijing; Chinese Academy of Sciences; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
摘要：This article adopts the event-triggered control strategy to investigate the consensus problem of multiagent systems. Owing to the effect of random noises, the communication information among agents is transmitted based on binary-valued measurements. Each agent employs the recursive projection algorithm to estimate the states of all neighbors. Then, an event-triggered protocol with time-varying threshold parameters is proposed to guarantee that the state of each agent can lie within the same bo...
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作者：Ma, Ziyue; Jiang, Jiagang; Cai, Kai
作者单位：Xidian University; Osaka Metropolitan University
摘要：In this article, we study a secret protection problem in discrete-event systems. The system is modeled by an automaton in which several states are assigned with different secret levels. Our aim is to protect some of the events in the system such that any sequence yielding a secret state contains a number of protected events no less than the required security level. We first study the secret-protecting problem with minimum cost, i.e., to design a protecting policy whose cost is minimal. We prov...
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作者：Paunonen, Lassi; Afshar, Sepideh
作者单位：Tampere University
摘要：We introduce general results on well-posedness and output regulation of regular linear systems with nonautonomous controllers. We present a generalization of the internal model principle for time-dependent controllers with asymptotically converging parameters. This general result is utilized in controller design for output tracking and disturbance rejection of harmonic signals with unknown frequencies. Our controller can be flexibly combined with different frequency estimation methods. The res...
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作者：Almakhles, Dhafer; Abdelrahim, Mahmoud
作者单位：Prince Sultan University; Egyptian Knowledge Bank (EKB); Assiut University
摘要：In this article, we study the problem of output feedback control for nonlinear systems under event-triggered implementation and dynamic quantization. We focus on the case where the initial output measurement is unknown and we propose a novel dynamic quantization policy to capture the output in a finite time. Next, the event-triggering mechanism that we design relies on a dynamic variable, which allows for reducing the amount of transmissions over the network. The dynamic quantizer is binary in...
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作者：Lee, Ti-Chung; Su, Youfeng
作者单位：National Sun Yat Sen University; Fuzhou University
摘要：This article formulates and analyzes agreements of the nonlinear opinion dynamics in social networks according to switching interactions, where the agents' susceptibilities depend on current states. These switching interactions are formulated by switching directed graphs with some mild joint connectivity, and depicted by nonlinear switching model. An extended LaSalle invariance principle is established for analyzing the agreements of this switching model as well as three specialized scenarios,...
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作者：Li, Yushan; He, Jianping; Chen, Cailian; Guan, Xinping
作者单位：Shanghai Jiao Tong University; Shanghai Jiao Tong University; Shanghai Jiao Tong University
摘要：Topology inference for network systems (NSs) plays a crucial role in many areas. This article advocates a causality-based method based on noisy observations from a single trajectory of an NS, which is represented by the state-space model with general directed topology. Specifically, we first prove its close relationships with the ideal Granger estimator for multiple trajectories and the traditional ordinary least squares (OLS) estimator for a single trajectory. Along with this line, we analyze...
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作者：Yang, Peng; Liu, Feng; Liu, Tao; Hill, David J.
作者单位：Tsinghua University; Tsinghua University; State Grid Corporation of China; University of Hong Kong; Monash University
摘要：Power system transient stability has been translated into a Lyapunov stability problem of the postdisturbance equilibrium for decades. Despite substantial results, conventional theories suffer from the stringent requirement of knowing the postdisturbance equilibrium a priori. In contrast, the wisdom from practice, which certificates stability by only the observation of converging frequencies and voltages, seems to provide an equilibrium-independent approach. Here, we formulate empirical wisdom...
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作者：Hao, Yaqi; Zhang, Ji-Feng
作者单位：Shandong University; Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
摘要：Distributed optimization of multiagent systems over uniform hypergraphs is considered in this article. Given a global objective function in advance, an ideal design method of utility functions for each agent is put forward to convert a multiagent system into a budget-balanced potential network game (BBPNG) with the preassigned objective function as its potential function. First, the verification of BBPNGs is simplified to verify whether its fundamental network game is a budget-balanced potenti...
