Predictor-based sampled-data output-feedback control for feedforward nonlinear time-delay systems  

作　　者：Wenjie Zhang Weihao Pan Xianfu Zhang Qingrong Liu 

机构地区：[1]School of Control Science and Engineering,Shandong University,Jinan,250061,Shandong,China [2]School of Mathematics and Quantitative Economics,Shandong University of Finance and Economics,Jinan,250014,Shandong,China

出　　处：《Control Theory and Technology》2025年第1期105-117,共13页控制理论与技术(英文版)

基　　金：supported by the Autonomous Innovation Team Foundation for“20 Items of the New University”of Jinan City(202228087);the National Natural Science Foundation of China(62073190).

摘　　要：This paper studies global stabilization via predictor-based sampled-data output feedback for a class of feedforward nonlinear time-delay systems.Note that the traditional sampled-data observer via zero-order holder may result in the performance degradation of the observer.In this paper,an improved predictor-based observer is designed to compensate for the influence of the unmeasurable states,sampling errors and output delay.In addition,a sampled-data output-feedback controller is also constructed using the gain scaling technique.By the Lyapunov-Krasovskii functional method,the global exponential stability of the resulting closed-loop system can be guaranteed under some sufficient conditions.The simulation results are provided to demonstrate the main results.

关 键 词：Feedforward nonlinear systems Time delay Predictor-based observer Sampled-data output-feedback controller 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]