2期

最新文章

• Ensembles of Hyperbolic PDEs: Stabilization by Backstepping AI翻译
  作者：Alleaume, Valentin; Krstic, Miroslav
  作者单位：Universite PSL; MINES ParisTech; University of California System; University of California San Diego
  摘要：For the quite extensively developed partial differential equations (PDE) backstepping methodology for coupled linear hyperbolic PDEs, we provide a generalization from finite collections of such PDEs, whose states at each location in space are vector-valued, to previously unstudied infinite (continuum) ensembles of such hyperbolic PDEs, whose states are function-valued. The motivation for studying such systems comes from traffic applications (where driver and vehicle characteristics are continu...
• Stabilization and Decay Rate Estimation of Nonlinear Flexible Marine Riser System With the Rotational Inertia Under Nonlinear Boundary Controls AI翻译
  作者：Cheng, Yi; Zhang, Yuexi; Wu, Yuhu; Guo, Bao-Zhu
  作者单位：Bohai University; Dalian University of Technology; Dalian University of Technology; North China Electric Power University; Chinese Academy of Sciences; North China Electric Power University
  摘要：This article investigates the boundary stabilization of a flexible marine riser system that takes rotational inertia into account. This system is described using a nonlinear partial differential equation under the nonlinear controls. Specifically, we focus on applying nonlinear boundary feedback control forces and torques at the top end of the riser. Utilizing measurements of boundary velocity and angular velocity, we devise nonlinear feedback mechanisms aimed at mitigating vibrations within t...
• Observer Error Reduction via Direct State Reconstruction AI翻译
  作者：Meiners, Florian; Adamy, Juergen
  作者单位：Technical University of Darmstadt
  摘要：State observers inherently suffer from error peaking in the face of unknown initial states and un-modeled disturbances. This issue can make their state estimates useless during transient periods and whenever disturbances follow in quick succession. In this article, we propose an approach to fighting observer error peaking at its root. By directly reconstructing the system state from the output and its derivatives, we obtain an approximation of the true state that is used to drastically reduce ...
• Reachability-Guaranteed Sliding-Mode Control for Asynchronously Switched Uncertain Systems AI翻译
  作者：Fei, Zhongyang; Wu, Zhen; Zhao, Xudong; Zong, Guangdeng; Lin-Shi, Xuefang
  作者单位：Dalian University of Technology; Dalian University of Technology; Tiangong University; Weifang University; Universite Claude Bernard Lyon 1; Ecole Centrale de Lyon; Institut National des Sciences Appliquees de Lyon - INSA Lyon; Centre National de la Recherche Scientifique (CNRS)
  摘要：In the sliding-mode control of switched systems, the mode-dependent sliding surface is generally considered to fulfill performance requirements of different subsystems. However, in the mode-dependent sliding surface design, the system state may oscillate among subsliding surfaces, which affects both stability and robustness. To solve this issue, this article starts from ensuring the reachability of each subsliding surface and proposes the reachability-guaranteed sliding-mode control for asynch...
• Global Asymptotic Stabilization of the Double Integrator System With Output Saturation AI翻译
  作者：Li, Yuhui; Li, Yuanlong; Lin, Zongli
  作者单位：Shanghai Jiao Tong University; University of Virginia
  摘要：In this article, we revisit the problem of global asymptotic stabilization of the double integrator system subject to output saturation. It is shown that there exist linear dynamic output feedback laws that globally asymptotically stabilize the double integrator system subject to output saturation. The construction of the linear output feedback laws is then presented in the form of an explicit algorithm. This method is then extended to a class of high-order systems that are of minimum phase an...
• Tradeoffs Between Convergence Rate and Noise Amplification for Momentum-Based Accelerated Optimization Algorithms AI翻译
  作者：Mohammadi, Hesameddin; Razaviyayn, Meisam; Jovanovic, Mihailo R.
  作者单位：University of Southern California; University of Southern California
  摘要：In this article, we study momentum-based first-order optimization algorithms in which the iterations utilize information from the two previous steps and are subject to an additive white noise. This setup uses noise to account for uncertainty in either gradient evaluation or iteration updates, and it includes Polyak's heavy-ball and Nesterov's accelerated methods as special cases. For strongly convex quadratic problems, we use the steady-state variance of the error in the optimization variable ...
• Generalized Policy Improvement Algorithms With Theoretically Supported Sample Reuse AI翻译
  作者：Queeney, James; Paschalidis, Ioannis Ch.; Cassandras, Christos G.
  作者单位：Boston University; Boston University
  摘要：We develop a new class of model-free deep reinforcement learning algorithms for data-driven, learning-based control. Our Generalized Policy Improvement algorithms combine the policy improvement guarantees of on-policy methods with the efficiency of sample reuse, addressing a tradeoff between two important deployment requirements for real-world control: 1) practical performance guarantees; and 2) data efficiency. We demonstrate the benefits of this new class of algorithms through extensive expe...
• A Finite-Time Consensus Continuous-Time Algorithm for Distributed Pseudoconvex Optimization With Local Constraints AI翻译
  作者：Wang, Sijian; Yu, Xin
  作者单位：Guangxi University
  摘要：In this article, we develop a continuous-time algorithm based on a multiagent system for solving distributed, nonsmooth, and pseudoconvex optimization problems with local convex inequality constraints. The proposed algorithm is modeled by differential inclusion, which is based on the penalty method rather than the projection method. Compared with existing methods, the proposed algorithm has the following advantages. First, this algorithm can solve the distributed optimization problem, in which...
• Optimizing Shifted Stabilizers With Asymmetric Input Saturation AI翻译
  作者：Braun, Philipp; Giordano, Giulia; Kellett, Christopher M.; Shames, Iman; Zaccarian, Luca
  作者单位：Australian National University; University of Trento; Universite de Toulouse; Centre National de la Recherche Scientifique (CNRS)
  摘要：A stabilizing controller design for linear systems subject to asymmetric actuator saturation is proposed. Stabilization is achieved by focusing on shifted equilibria selected via the solution of an optimization problem ensuring convergence to the origin of the shifted equilibrium. To enable the computational time required by the optimizer, we impose sampled-data updates of the shifted equilibria and cast our description within a hybrid dynamical systems formulation. Two feedback solutions are ...
• Exponential Stability and Design of Sensor Feedback Amplifiers for Fast Stabilization of Magnetizable Piezoelectric Beam Equations AI翻译
  作者：Ozer, Ahmet Ozkan; Aydn, Ahmet Kaan; Emran, Rafi
  作者单位：Western Kentucky University; University System of Maryland; University of Maryland Baltimore County; New Jersey Institute of Technology
  摘要：The dynamic partial differential equation model governing longitudinal oscillations in magnetizable piezoelectric beams exhibits exponentially stable solutions when subjected to two boundary state feedback controllers. An analytically established exponential decay rate by the Lyapunov approach ensures the stabilization of the system to equilibrium, although the actual decay rate could potentially be improved. The decay rate of the closed-loop system is highly sensitive to the choice of materia...