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作者：Fu, Jing; Wang, Xinyu; Wang, Zengfu; Zukerman, Moshe
作者单位：Royal Melbourne Institute of Technology (RMIT); City University of Hong Kong; Northwestern Polytechnical University
摘要：We aim to maximize the energy efficiency, gauged as average energy cost per job, in a large-scale server farm with various storage or/and computing components modeled as parallel abstracted servers. Each server operates in multiple power modes characterized by potentially different service and energy consumption rates. The heterogeneity of servers and multiple power modes complicate the maximization problem, where optimal solutions are generally intractable. Relying on the Whittle relaxation t...
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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：The distributed computation of a Nash equilibrium in aggregative games is gaining increased attention in recent years. Of particular interest is the coordinator-free scenario where individual players only observe the decisions of their neighbors due to practical constraints. Given the noncooperative relationship among participating players, protecting the privacy of individual players becomes imperative when sensitive information is involved. We propose a fully distributed equilibrium-seeking ...
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作者：Wang, Yongqiang; Basar, Tamer
作者单位：Clemson University; University of Illinois System; University of Illinois Urbana-Champaign
摘要：We propose a distributed Nash equilibrium seeking approach that can achieve both almost sure convergence and rigorous differential privacy with finite cumulative privacy budget, which is in sharp contrast to existing differential-privacy solutions for networked games that have to trade provable convergence for differential privacy. The approach is applicable when the communication graph is directed and unbalanced. Numerical comparison results with existing counterparts confirm the effectivenes...
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作者：Kim, Taekyoo
作者单位：Korea Railroad Research Institute (KRRI)
摘要：Despite various physical applications, state-space identification for continuous-time dynamic systems with noisy sampled data is less popular than discrete-time systems owing to unmeasurable state derivatives. Consequently, its scope is limited to linear or preparameterized systems. In this study, we formulate the identification as a (nonparametric) kernel regression problem applicable to nonlinear dynamic systems, which facilitates the joint assessment of the data fitness and fidelity of dyna...
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作者：Li, Yifei; Wang, Xin; Sun, Jian; Wang, Gang; Chen, Jie
作者单位：Beijing Institute of Technology; Tongji University; Beijing Institute of Technology
摘要：This article considers self-triggered consensus control (STC) of unknown linear multiagent systems (MASs). Self-triggering mechanisms (STMs) are widely used in MASs, thanks to their advantages in avoiding continuous monitoring and saving computing and communication resources. However, existing results require the knowledge of system matrices, which are difficult to obtain in real-world settings. To address this challenge, we present a data-driven approach to designing STMs for unknown MASs bui...
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作者：Zhao, Rui; Zuo, Zhiqiang; Shi, Yang; Wang, Yijing; Zhang, Wentao
作者单位：Tianjin University; University of Victoria; Nanyang Technological University; Nanyang Technological University
摘要：This article studies the security problem for switched systems when the sensor-to-controller and controller-to-actuator channels are compromised by cooperative attacks. The attack is expected to be as stealthy as possible, regardless of whether system mode is eavesdropped or not. The conditions that the attack sequence needs to meet are given, along with the stealthy guarantee when the attacker has access to system mode information. It is shown that whenever the mode is unknown, the correspond...
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作者：De Persis, Claudio; Postoyan, Romain; Tesi, Pietro
作者单位：University of Groningen; University of Groningen; Centre National de la Recherche Scientifique (CNRS); Universite de Lorraine; University of Florence
摘要：We present a data-based approach to design event-triggered state-feedback controllers for unknown continuous-time linear systems affected by disturbances. By an event, we mean state measurements transmission from the sensors to the controller over a digital network. By exploiting a sufficiently rich finite set of noisy state measurements and inputs collected off-line, we first design a data-driven state-feedback controller to ensure an input-to-state stability property for the closed-loop syst...
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作者：Zhang, Yuan; Xia, Yuanqing; Wang, Gang; Zhang, Jinhui
作者单位：Beijing Institute of Technology; Zhongyuan University of Technology
摘要：This article proposes a novel notion termed perturbation-tolerant structural controllability (PTSC) to study the generic property of controllability preservation/resilience of structured linear systems under structured perturbations. A structured system is said to be PTSC with respect to a perturbation structure if for almost all controllable realizations of this system, there are no complex-valued perturbations obeying the zero/nonzero pattern prescribed by the perturbation structure that can...
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作者：Zhang, Kai; Zhou, Bin; Hou, Mingzhe; Duan, Guang-Ren
作者单位：Harbin Institute of Technology; Harbin Institute of Technology
摘要：This article aims to solve the global practical prescribed-time stabilization problem of a class of nonlinear systems by bounded static and dynamic event-triggered control (ETC) and self-triggered control (STC) algorithms with a tradeoff performance. First, a static event-triggered mechanism is designed to update the control law based on the parametric Lyapunov equation containing a time-varying parameter that will approach to infinity at the prescribed settling time. This method can achieve t...
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作者：Nguyen, Hoai-Nam
作者单位：IMT - Institut Mines-Telecom; Institut Polytechnique de Paris; Telecom SudParis
摘要：Recently, a new Lyapunov function based on the convex hull of ellipsoids was introduced for the study of uncertain and/or time-varying linear discrete-time systems with/without constraints. The new Lyapunov function has many attractive features such as: 1) the associated ellipsoids are not required to be robustly invariant; 2) the design conditions are formulated as linear matrix inequality constraints. The control law is obtained by solving a convex optimization problem online. This optimizat...
