一种与生产控制相关的故障诊断方法  

A fault diagnosis method related to production control

作　　者：李艳冰[1] 陆瑶[1] LI Yanbing;LU Yao(School of Mechanical Engineering,Tongji University,Shanghai 201804, China)

机构地区：[1]同济大学机械与能源工程学院,上海201804

出　　处：《中国工程机械学报》2017年第6期552-555,共4页Chinese Journal of Construction Machinery

摘　　要：针对一类伴有外界干扰的线性系统,探讨了执行器故障重构的问题.使用高增益近似微分器得到输出导数的估计值,构建一种未知输入观测器,实现对外界干扰和执行器故障解耦,可以适时跟踪系统的状态.基于状态和输出导数的估计值,使用代数方法可以直接重构系统的执行器故障.仿真结果表明,所提出的方法是有效的.To reconstruct actuator fault is one of important problems in modern control theory.A method of reconstructing actuator faults for a kind of linear systems is considered.By using high-gain observers,the estimate of the output＇s derivative can be achieved.Then a reduced-order observer which can asymptotically track system＇s state is constructed.Through employing the estimates of both the state and output＇s derivative,actuator faults can be reconstructed.The simulation results to a real model show that the proposed method is effective.

关 键 词：高增益近似微分器 未知输入解耦观测器 执行器故障重构 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]