计量学报2017，Vol.38Issue(6)：725-729,5.DOI:10.3969/j.issn.1000-1158.2017.06.15
非线性系统的有限时间扩张状态观测器的设计
Finite Time Extended State Observer Designed for Nonlinear Systems
摘要
Abstract
To investigate a class of nonlinear systems with uncertainties and external disturbances,a finite time extended state observer is designed to estimate the uncertainties and external disturbances in finite time.Compared to standard extended state observer,based on the idea of terminal sliding mode,the observer makes use of fractional powers to reduce extended state error to zero in finite time,and then strengthen the robustness.A sufficient condition on the issue of finite time stability is established through the theory of Lyapunov,and finally,an illustrative numerical simulation is given to demonstrate the effectiveness of the strategy proposed.关键词
计量学/扩张状态观测器/有限时间/非线性系统/不确定项/干扰/终端滑模Key words
metrology/extended state observer/finite time/nonlinear systems/uncertainties/disturbances/terminal sliding mode分类
通用工业技术引用本文复制引用
王洪斌,周振,王跃灵,郝策,葛顺刚..非线性系统的有限时间扩张状态观测器的设计[J].计量学报,2017,38(6):725-729,5.基金项目
国家自然科学基金(61473248) （61473248）
河北省自然科学基金(F2016203496) （F2016203496）
