Predictor-based sampled-data output-feedback control for feedforward nonlinear time-delay systems
Wenjie Zhang
Weihao Pan
Xianfu Zhang
Qingrong Liu
Abstract：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.
Keywords：Feedforward nonlinear systemsTime delayPredictor-based observerSampled-data output-feedback controller
Publication Date：2025-02-04
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：13( 105-117 )