计算机应用研究2017，Vol.34Issue(7)：1989-1992,4.DOI:10.3969/j.issn.1001-3695.2017.07.015
基于广义未知输入观测器的执行器故障估计
Actuator fault estimation based on unknown input observer in generalized system
摘要
Abstract
This paper proposed an adaptive fault reconstruction algorithm to deal with the actuator fault for a class of genera-lized nonlinear system with unknown disturbance.Firstly,it designed the unknown input observer as a detection observer to achieve robust to unknown disturbance.After detecting the fault,it developed an adaptive observer by using an adaptive law,the law contained the proportional and integral terms of error to simultaneously estimate the fault and states rapidly and accurately.Then,it presented the sufficient conditions to ensure the estimation error to be uniformly bounded according to Lyapunov stable theory.Finally,comparing to fault detection methods of sliding mode,it gave an example of a helicopter model to show the robustness of the developed observers and the effectiveness of fault estimaion algorithm.关键词
非线性广义系统/未知输入/故障检测/故障重构Key words
generalized nonlinear system/unknown input/fault detection/fault estimation分类
信息技术与安全科学引用本文复制引用
邓露,文传博..基于广义未知输入观测器的执行器故障估计[J].计算机应用研究,2017,34(7):1989-1992,4.基金项目
国家自然科学基金资助项目(61374136,61473159) （61374136,61473159）
上海市自然科学基金资助项目(12ZR1411800) （12ZR1411800）
上海市人才发展资金资助项目(201511) （201511）
