信息与控制2016，Vol.45Issue(2)：129-134,6.DOI:10.13976/j.cnki.xk.2016.0129
不确定线性系统有限时间状态估计与故障重构
The Finite-time State Estimation and Fault Reconstruction for Uncertain Linear Systems
摘要
Abstract
To address a class of uncertain linear systems with external disturbances and actuator faults,we propose a method for estimating the finite-time state and reconstructing the actuator faults.First,by state and output equivalent transformations,we obtain a reduced-order decoupled system that can eliminate the influence of both actuator faults and disturbance information from the modeling uncertainty.Based on the above transfor-mations,we present the finite-time estimator in which we employ a delay that can be set to be small enough for the purpose of estimating the states of reduced-order system in finite-time such that the purpose of finite-time state estimation can be realized for the original system.Second,we consider a high-gain sliding mode differentiator to exactly estimate the derivative of the output vector of the original system in finite time.Next, based on the estimates of both the state and output derivative of the original system,we propose an information reconstruction method that can simultaneously estimate actuator faults and uncertain information.Finally,we provide F-16 aircraft model subjects to actuator faults and validate the effectiveness of the proposed method.关键词
状态估计/故障重构/执行器故障/等价变换Key words
state estimation/fault reconstruction/actuator fault/equivalent transformation分类
信息技术与安全科学引用本文复制引用
陈滟涛,谢东垒,谢贝贝,杨俊起..不确定线性系统有限时间状态估计与故障重构[J].信息与控制,2016,45(2):129-134,6.基金项目
国家自然科学基金资助项目（61403129）；河南省高等学校青年骨干教师资助项目（2015GGJS-064）；河南理工大学博士基金资助项目（B2015-30）；河南省高等学校控制工程重点学科开放实验室资助项目 （）
