状态X^2检验法在联邦滤波器中的应用  

Application of State Chi-square Test to Federated Filter

作　　者：李金梁[1] 黄国荣[2] 郝顺义[2] 

机构地区：[1]93619部队装备部 [2]空军工程大学工程学院

出　　处：《火力与指挥控制》2010年第2期144-149,共6页Fire Control & Command Control

基　　金："十一五"惯性技术预研项目(51309060302)

摘　　要：针对联邦滤波器的特殊性,基于残差故障统计检验原理,详细研究了状态检验法应用时存在的几个问题。由于信息分配,造成子滤波器局部估计次优,从而基于残差的故障统计检验方法不能够直接使用;针对这一问题,修正了残差方差阵的计算方法,并提出一种次优自适应补偿方法,能够有效改善局部估计次优性对故障检测灵敏度的影响。最后的仿真结果表明了研究的有效性和可行性。Aiming at the particularity of federated kalman filtering, the problems in application of state chi-square test were detailed,based on residue fault statistical detection theory. The information sharing will cause sub-optimal of local estimation and the fault statistical detection method based on residue is not good to use immediately. Aiming at which, the computing method of residue square-matrix was modified and a sub-optimal adaptive compensation method proposed, which could improve the affection of detection sensitivity. The simulation shows the validity and feasibility of the study.

关 键 词：故障诊断 联邦滤波器 状态X2检验 信息分配 残差 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]