2022

最新文章

• Multivariable Super-Twisting Algorithm for Systems With Uncertain Input Matrix and Perturbations AI翻译
  作者：Moreno, Jaime A.; Rios, Hector; Ovalle, Luis; Fridman, Leonid
  作者单位：Universidad Nacional Autonoma de Mexico; Consejo Nacional de Ciencia y Tecnologia (CONACyT); Universidad Nacional Autonoma de Mexico
  摘要：This article proposes a Lyapunov approach to the design of a multivariable generalized super-twisting algorithm (MGSTA), which is able to control a system with perturbations and uncertain control matrix, both depending on time and the system states. The presented procedure shows that, under reasonable assumptions for the uncertainties, it is always possible to find a set of constant gains for the MGSTA in order to ensure global and robust finite-time stability of the system's outputs. Simulati...
• Generalized Super-Twisting for Control Under Time- and State-Dependent Perturbations: Breaking the Algebraic Loop AI翻译
  作者：Haimovich, Hernan; Fridman, Leonid; Moreno, Jaime A.
  作者单位：Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); National University of Rosario; Universidad Nacional Autonoma de Mexico; Universidad Nacional Autonoma de Mexico
  摘要：Application of sliding-mode control strategies based on (generalized) super-twisting (ST) algorithms in the presence of time- and state-dependent perturbations is highly challenging. One of the difficulties lies in the occurrence of a kind of algebraic loop; the bounds required for control design require bounds on the control variable, which itself depends on the control to be designed. Existing results were able to partially solve this problem by means of one form of generalized ST, provided ...
• Distributed State Estimation for Continuous-Time Linear Systems With Correlated Measurement Noise AI翻译
  作者：Duan, Peihu; Qian, Jiachen; Wang, Qishao; Duan, Zhisheng; Shi, Ling
  作者单位：Hong Kong University of Science & Technology; Peking University; Beihang University
  摘要：In this article, the problem of distributed state estimation for a continuous-time linear system with a sensor network is investigated, where each sensor can only communicate with its neighbors and contains time-correlated measurement noise. To solve this problem, a novel augmented leader-following information fusion strategy is first proposed to collect measurements and system matrices. Then, a class of distributed state estimators is developed with bounded estimation error covariances. Furth...
• A Second Order Primal-Dual Method for Nonsmooth Convex Composite Optimization AI翻译
  作者：Dhingra, Neil K.; Khong, Sei Zhen; Jovanovic, Mihailo R.
  作者单位：University of Southern California
  摘要：We develop a second order primal-dual method for optimization problems in which the objective function is given by the sum of a strongly convex twice differentiable term and a possibly nondifferentiable convex regularizer. After introducing an auxiliary variable, we utilize the proximal operator of the nonsmooth regularizer to transform the associated augmented Lagrangian into a function that is once, but not twice, continuously differentiable. The saddle point of this function corresponds to ...
• Optimal Consensus via OCPI Regulation for Unknown Pure-Feedback Agents With Disturbances and State Delays AI翻译
  作者：Gkesoulis, Athanasios K.; Psillakis, Haris E.; Lagos, Athanasios-Rafail
  作者单位：National Technical University of Athens
  摘要：In this article, we present a novel methodology to address the optimal output consensus problem for multiagent systems. We propose a distributed variable transformation that recasts the aforementioned problem into a simpler regulation problem of the new variables. The transformation requires only relative output measurements and is independent of any underlying agent dynamics and therefore applicable to a general class of systems. Classical control techniques, which take into account the agent...
• Necessary and Sufficient Conditions for Fault Diagnosability of Linear Open- and Closed-Loop Stochastic Systems Under Sensor and Actuator Faults AI翻译
  作者：Liu, Qinyuan; Wang, Zidong; Zhang, Junfeng; Zhou, Donghua
  作者单位：Tongji University; Shandong University of Science & Technology; Brunel University; Harvard University; Tsinghua University
  摘要：In this article, the diagnosability problem is investigated for open-loop and closed-loop stochastic systems under sensor and actuator faults. A novel quantitative fault diagnosability analysis method is developed to characterize the detectability and isolability for a given system without any predetermined fault diagnosis algorithm. By exploiting the Bhattacharyya distance, some novel indices are proposed to evaluate the difficulty degree of fault detectability and isolability. Necessary and ...
• Unfalsified Adaptive Control for Nonlinear Time-Varying Plants AI翻译
  作者：Patil, Sagar V.; Sung, Yu-Chen; Safonov, Michael G.
  作者单位：University of Southern California
  摘要：The Battistelli-Hespanha-Mosca-Tesi (BHMT) adaptive reset switching algorithm is enhanced to admit bumpless transfer and to control a nonlinear time-varying plant using the broad class of two-degree-of-freedom nonlinear time-varying controllers. Performance, including stability and exponential stability, is proved given only that the adaptive stabilization problem is lambda-feasible, which means at every time, there exists at least one exponentially stabilizing controller. We relax two restric...
• Distributed Global Optimization for a Class of Nonconvex Optimization With Coupled Constraints AI翻译
  作者：Ren, Xiaoxing; Li, Dewei; Xi, Yugeng; Shao, Haibin
  作者单位：Shanghai Jiao Tong University
  摘要：This article examines the distributed nonconvex optimization problem with structured nonconvex objective functions and coupled convex inequality constraints on static networks. A distributed continuous-time primal-dual algorithm is proposed to solve the problem. We use the canonical transformation and Lagrange multiplier method to reformulate the nonconvex optimization problem as a convex-concave saddle point computation problem, which is subsequently solved by employing the projected primal-d...
• Adaptive Event-Triggered Control of Uncertain Nonlinear Systems Using Intermittent Output Only AI翻译
  作者：Zhang, Zhirong; Wen, Changyun; Xing, Lantao; Song, Yongduan
  作者单位：Chongqing University; Chongqing University; Nanyang Technological University
  摘要：Although rich collection of research results on event-triggered control exist, no effort has ever been made in integrating state/output triggering and controller triggering simultaneously with backstepping control design. The primary objective of this article is, by using intermittent output signal only, to build a backstepping adaptive event-triggered feedback control for a class of uncertain nonlinear systems. To do so, we need to tackle three technical obstacles. First, the nature of the ev...
• Uniform Global Asymptotic Stabilization of Semilinear Periodic Discrete-Time Systems AI翻译
  作者：Czornik, Adam; Makarov, Evgenii; Niezabitowski, Michal; Popova, Svetlana; Zaitsev, Vasilii
  作者单位：Silesian University of Technology; National Academy of Sciences of Belarus (NASB); Institute of Mathematics of the National Academy of Sciences of Belarus; Udmurt State University
  摘要：Semilinear discrete-time control systems with periodic coefficients are considered. The problem of uniform global asymptotic stabilization of the zero equilibrium of the closed-loop system by state feedback is studied. It is assumed that the free dynamic system has a Lyapunov stable zero equilibrium. The method for constructing a damping control is extended from time-invariant systems to time varying periodic semilinear discrete-time systems. By using this approach, sufficient conditions for u...