2024

最新文章

• A Bisimulation-Based Foundation for Scale Reductions of Continuous-Time Markov Chains AI翻译
  作者：Lin, Lin; Cao, Jinde; Lam, James; Rutkowski, Leszek; Dimirovski, Georgi Marko; Zhu, Shiyong
  作者单位：University of Hong Kong; Southeast University - China; Southeast University - China; Polish Academy of Sciences; Systems Research Institute of the Polish Academy of Sciences; AGH University of Krakow; Saints Cyril & Methodius University of Skopje
  摘要：In this article, the scale reduction problem of continuous-time Markov chains (CT-MCs) and continuous-time controlled Markov chains (CT-CMCs) are disserted both from the bisimulation perspective. Based on the features of bisimulation, the reachability, macro-controllability, controllability, and stabilizability of CT-MCs and CT-CMCs, particularly, the large-scale ones, are addressed over the corresponding reduced chains. The bisimulation relations are defined for both CT-MCs and CT-CMCs to est...
• Uniformity of Controllability and Stabilization of Switched Linear Time-Varying Systems AI翻译
  作者：Wang, Xingping; Chi, Dianwei
  摘要：We consider the stabilization of systems that switch among an arbitrary number of linear time-varying subsystems, which cannot be stabilized by simply stabilizing all the subsystems even if their dwell time is large enough. We introduce a uniformity condition on the controllability of all the subsystems under which we can design controllers for the subsystems such that the closed-loop subsystems are exponentially stable, and their state transition matrices have uniformly bounded magnitudes. We...
• Feedback Control for Distributed Ledgers: An Attack Mitigation Policy for DAG-Based DLTs AI翻译
  作者：Ferraro, Pietro; Penzkofer, Andreas; King, Christopher; Shorten, Robert
  作者单位：Imperial College London; Northeastern University
  摘要：In this article, we present a feedback approach to the design of an attack mitigation policy for directed acyclic graph (DAG)-based distributed ledgers. We develop a model to analyze the behavior of the ledger under the so-called Tips Inflation Attack, which endangers the liveness of transactions, and we design a control strategy to counteract this attack strategy. The efficacy of this approach is showcased through a theoretical analysis, in the form of two theorems about the stability propert...
• Adaptive Event-Triggered Fixed-Time Practical Tracking Control for Uncertain Nonlinear Systems AI翻译
  作者：Ma, Qian; Xie, Yingkang
  作者单位：Nanjing University of Science & Technology
  摘要：This article investigates adaptive fixed-time practical tracking control for nonlinear systems with uncertainties. First, a novel switch function is given, based on which a continuous error compensation system is proposed. The virtual control laws and the adaptive laws are then designed via command filter-based backstepping technique. It is worth noting that the second-order derivability of the proposed virtual control laws is guaranteed by the designed switch function, namely, the validness o...
• Distributed Supervision Strategies for Cyber-Physical Systems With Varying Network Topology AI翻译
  作者：Tedesco, Francesco; Casavola, Alessandro
  作者单位：University of Calabria
  摘要：This article presents a novel distributed constrained monitoring strategy for cyber-physical systems that focuses on enforcing point-in-time set-membership coordination constraints among the subsystem evolutions. The proposed scheme extends previous solutions by allowing the handling of time-varying dynamic interconnections, including the online addition/removal of subsystems (plug-and-play) during normal system operations. This approach ensures global coordination of the subsystems while effe...
• Convex Decreasing Algorithms: Distributed Synthesis and Finite-Time Termination in Higher Dimension AI翻译
  作者：Melbourne, James; Saraswat, Govind; Khatana, Vivek; Patel, Sourav; Salapaka, Murti V.
  作者单位：University of Minnesota System; University of Minnesota Twin Cities; United States Department of Energy (DOE); National Renewable Energy Laboratory - USA
  摘要：We establish finite time termination algorithms for consensus algorithms based on geometric properties that yield finite-time guarantees, suited for use in high dimension and in the absence of a central authority. These pursuits motivate a new peer to peer convex hull algorithm, which is utilized for one stopping algorithm. Further an alternative lightweight norm based stopping criteria is also developed. The practical utility of the algorithm is illustrated through MATLAB simulations.
• Quantized Zero Dynamics Attacks Against Sampled-Data Control Systems AI翻译
  作者：Kimura, Kosuke; Ishii, Hideaki
  作者单位：Institute of Science Tokyo; Tokyo Institute of Technology; Institute of Science Tokyo; Tokyo Institute of Technology
  摘要：For networked control systems, cyber-security issues have gained much attention in recent years. In this article, we consider the so-called zero dynamics attacks, which form an important class of false data injection attacks, with a special focus on the effects of quantization in a sampled-data control setting. When the attack signals must be quantized, some error will be necessarily introduced, potentially increasing the chance of detection through the output of the system. In this article, w...
• Saturated Boundary Feedback Stabilization for a Nonuniform Timoshenko Beam With Disturbances and Uncertainties AI翻译
  作者：Wang, Shen; Han, Zhong-Jie; Zhao, Zhi-Xue; Cao, Xue-Guang
  作者单位：Tianjin University; Tianjin Normal University
  摘要：This article is concerned with the saturated feedback stabilization for a nonuniform Timoshenko beam with boundary control matched unknown internal uncertainties and external disturbances. An infinite-dimensional disturbance estimator without involving high gain is designed to estimate the total disturbances. By compensating/canceling the total disturbances in the feedback loop and combining with a collocated stabilizing controller without uncertainty, we propose an unsaturated feedback contro...
• Stability Analysis of Switched Stochastic Nonlinear Systems With State-Dependent Delay AI翻译
  作者：Fan, Lina; Zhu, Quanxin; Zheng, Wei Xing
  作者单位：Hunan Normal University; Western Sydney University
  摘要：This article is devoted to solving the problem of stochastically weakly locally exponential stability of switched stochastic systems with the state-dependent delay. Different from the previous works, we introduce the state-dependent delay, which is a random variable dependent on the system state so that the bound of the delay is unknown. In addition, we also consider the influence of switching on the stability of the system. By using multiple Lyapunov-Krasovskii functionals and some novel stoc...
• Optimal Covariance Steering for Continuous-Time Linear Stochastic Systems With Martingale Additive Noise AI翻译
  作者：Liu, Fengjiao; Tsiotras, Panagiotis
  作者单位：University System of Georgia; Georgia Institute of Technology
  摘要：In this article, we study the problem of how to optimally steer the state covariance of a general continuous-time linear stochastic system over a finite time interval subject to additive noise. Optimality here means reaching a target state covariance with minimal control energy. The additive noise may include a combination of white Gaussian noise and abrupt jump noise that is discontinuous in time. We first establish the controllability of the state covariance for linear time-varying stochasti...