文章基本信息

标题：Online Reliability Assessment of Passive Nonlinear Systems Based on extended State-Observer with Application to Nuclear Reactors
本地全文：下载
作者：Zhe Dong ; Bowen Li ; Zhiwu Guo 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2020
卷号：53
期号：2
页码：13587-13592
DOI：10.1016/j.ifacol.2020.12.805
语种：English
出版社：Elsevier
摘要：AbstractOnline reliability assessment based on system model and operational data is crucial for all the safety critical systems. Since system reliability can be calculated directly from failure-rate, the central in online reliability assessment is the determination of failure-rate. In fact, the deviation of actual responses from its expectation can be utilized for disturbance observation which can further determine the failure-rate. In this paper, an extended state observer (eSO) is proposed for general nonlinear dissipative systems, which provides globally bounded observations for not only state-vector but also total disturbance and its differentiation. By assuming that the failure-rate is given by the estimated differentiation of total disturbance, the reliability can be evaluated. This eSO-based online reliability assessment method is then applied to a nuclear heating reactor, and simulation results show the feasibility and effectiveness.
关键词：KeywordsOnline reliability estimationnonlinear systemextended state-observerpassivity