摘要
提出了一种新颖的免疫状态观测器的设计方法,其主要设计思想是将状态变量分解为可直接测量和不可直接测量两个部分。放弃被故障污染的动态方程,通过测量输出更新可直接测量的状态变量,利用未被污染的动态方程去估计不可直接测量的状态变量。该方法克服了传统观测器在故障状态下对系统状态估计不准确的缺点,能够实现状态估计对系统目标故障的免疫功能,提高了故障诊断的准确性。
A design of novel immunized state observer is proposed. The method divides the system into measurable and unmeasurable part. The measurable part can be obtained through output without using the contaminative dynamic equation and the unmeasurable part can be obtained by the uncontaminative dynamic equation. This method overcomes the defect of the general observer that is affected by fault when estimating state.
出处
《中国空间科学技术》
EI
CSCD
北大核心
2005年第5期34-39,共6页
Chinese Space Science and Technology
关键词
故障诊断
数学模型
航天器
Fault diagnosis Mathematical model Spacecraft
