IEEE Transactions on Automatic Control

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• Duality Bounds for Discrete-Time Zames-Falb Multipliers AI翻译
  作者：Zhang, Jingfan; Carrasco, Joaquin; Heath, William Paul
  作者单位：University of Manchester
  摘要：This note presents phase conditions under which there is no suitable Zames- Falb multiplier for a given discrete-time system. Our conditions can be seen as the discrete-time counterpart of Jonsson's duality conditions for Zames-Falb multipliers. By contrast with their continuous-time counterparts and other phase limitations in the literature, they lead to numerically efficient results that can be computed either in closed form or via a linear program. The closed-form phase limitations are tigh...
• A Clustering Approach to Approximate the Timed Reachability Graph for a Class of Time Petri Nets AI翻译
  作者：Zhou, Jiazhong; Lefebvre, Dimitri; Li, Zhiwu
  作者单位：Xidian University; Universite Le Havre Normandie; Macau University of Science & Technology
  摘要：Timed extended reachability graphs (TERG) of time Petri nets abstract the temporal specifications and represent the feasible trajectories under the earliest firing policy. One drawback of such graphs is the rapid increase in the number of states with respect to time specifications. For this reason, approximations of TERG that remove some states have been studied in recent works. In this article, we improve the approximation of a TERG. New objects-called vertices-are defined to manipulate the t...
• Control-Enabling Adaptive Nonlinear System Identification AI翻译
  作者：Zisis, Konstantinos; Bechlioulis, Charalampos P.; Rovithakis, George A.
  作者单位：Aristotle University of Thessaloniki; University of Patras
  摘要：In this article, we rely on the theoretical foundations of radial basis function neural networks to form an adaptive parameter estimation problem, which we solve using the recently introduced prescribed performance control methodology. Such combination results in a compact user-configurable adaptive nonlinear system identification methodology that can be used to retrieve the open-loop nonlinear plant dynamics in any compact region of interest.
• Dynamic Multivariable Algebraic Loop Solver for Input-Constrained Control AI翻译
  作者：Adegbege, Ambrose Adebayo; Levenson, Richard M.
  作者单位：College of New Jersey
  摘要：We consider a gradient-like system for real-time implementation of multivariable algebraic loops arising in input-constrained control problems. Using results from mathematical programming, we establish global asymptotic convergence under a less stringent condition as compared to existing techniques. We comment on the application of the gradient-like system in antiwindup control implementation where the closed-loop can also be interpreted within the framework of singularly perturbed systems. Th...
• Optimal Privacy-Aware Estimation AI翻译
  作者：Nekouei, Ehsan; Sandberg, Henrik; Skoglund, Mikael; Johansson, Karl Henrik
  作者单位：City University of Hong Kong; City University of Hong Kong (Dongguan); Royal Institute of Technology
  摘要：This article studies the design of an optimal privacy-aware estimator of a public random variable based on noisy measurements, which contain private information. The public variable carries also nonprivate information, but its estimate will be correlated with the private information due to the estimation process. The objective is to design an optimal estimator of the public random variable such that the leakage of private information, via the estimation process, is kept below a certain level. ...
• Lyapunov Characterization of Uniform Exponential Stability for Nonlinear Infinite-Dimensional Systems AI翻译
  作者：Haidar, Ihab; Chitour, Yacine; Mason, Paolo; Sigalotti, Mario
  作者单位：Universite Paris Saclay; Centre National de la Recherche Scientifique (CNRS); Sorbonne Universite; Universite Paris Cite; Inria; Centre National de la Recherche Scientifique (CNRS)
  摘要：In this article, we deal with infinite-dimensional nonlinear forward complete dynamical systems which are subject to uncertainties. We first extend the well-known Datko lemma to the framework of the considered class of systems. Thanks to this generalization, we provide characterizations of the uniform (with respect to uncertainties) local, semi-global, and global exponential stability, through the existence of coercive and non-coercive Lyapunov functionals. The importance of the obtained resul...
• Decentralized LQ-Consistent Event-Triggered Control Over a Shared Contention-Based Network AI翻译
  作者：Balaghiinaloo, Mohammadhadi; Antunes, Duarte J.; Mamduhi, Mohammad H.; Hirche, Sandra
  作者单位：Eindhoven University of Technology; Swiss Federal Institutes of Technology Domain; ETH Zurich; Technical University of Munich
  摘要：Consider a network of multiple independent stochastic linear systems where, for each system, a scheduler collocated with the sensors arbitrates data transmissions to a corresponding remote controller through a shared contention-based communication network. While the systems are physically independent, their optimal controller design problems may, in general, become coupled, due to network contention, if the schedulers trigger transmissions based on state-dependent events. In this article, we p...
• Observers for a Class of Timed Automata Based on Elapsed Time Graphs AI翻译
  作者：Li, Jun; Lefebvre, Dimitri; Hadjicostis, Christoforos N.; Li, Zhiwu
  作者单位：Xidian University; Universite Le Havre Normandie; University of Cyprus; Macau University of Science & Technology
  摘要：This article develops a novel design principle for the observer of timed discrete event systems behaving under specific time semantics. Observers devoted to discrete event systems usually ignore the timing aspects of underlying systems but this can have implications to many applications, in particular, for refinement of estimation and inference tasks. The techniques of this article use the time stamps of observations to refine the state estimation process for a class of labeled and timed autom...
• Joint Sensor and Actuator Placement for Infinite-Horizon LQG Control AI翻译
  作者：Huang, Lingying; Wu, Junfeng; Mo, Yilin; Shi, Ling
  作者单位：The Chinese University of Hong Kong, Shenzhen; Zhejiang University; Tsinghua University
  摘要：We consider the problem of sensor and actuator (SaA) placement to minimize an infinite-horizon linear quadratic Gaussian (LQG) cost for a discrete-time Gauss-Markov system. Due to financial, topology, and bandwidth limitations, only a subset of SaAs can be selected for placement. Different from existing literature, which successively iterates partial selection to reach a suboptimal solution, this article focuses on a joint placement and encounters fundamental difficulty in the sense that joint...
• On the Use of the Time-Integrals of the Output in Observer Design for Nonlinear Autonomous Systems AI翻译
  作者：Menini, Laura; Possieri, Corrado; Tornambe, Antonio
  作者单位：University of Rome Tor Vergata; Consiglio Nazionale delle Ricerche (CNR); Istituto di Analisi dei Sistemi ed Informatica Antonio Ruberti (IASI-CNR)
  摘要：The goal of this article is to show that the observation scheme recently proposed for linear systems by Menini et al. in 2019, achieving good performance in the presence of a high-frequency measurement disturbance, can be adapted to be used for nonlinear autonomous systems. The design is based on the use of the time-integrals of the measured output and requires the availability of a state observer able to provide a rough estimate of the state; the proposed scheme can be then understood as an o...