计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2014年
15期
220-222
,共3页
吴琳丽%潘光%黄桥高
吳琳麗%潘光%黃橋高
오림려%반광%황교고
小子样系统%试验数据融合%第二类极大似然估计%Bayes分析
小子樣繫統%試驗數據融閤%第二類極大似然估計%Bayes分析
소자양계통%시험수거융합%제이류겁대사연고계%Bayes분석
small sample test%experimental data fusion%Maximum Likelihood estimate of the second kind(ML-II)%Bayes analysis
复杂系统可靠性信息的主要特点是小子样现场试验数据和多种可利用的多源先验信息。在利用Bayes理论进行小子样可靠性评定过程中,为了尽可能少做现场试验,必须充分利用各种先验信息,获取合理的先验分布。提出了一种基于第二类极大似然估计原理(ML-II)的多源信息融合方法,以某鱼雷自导系统的作用距离为例进行仿真分析,验证了该方法的合理性和有效性。
複雜繫統可靠性信息的主要特點是小子樣現場試驗數據和多種可利用的多源先驗信息。在利用Bayes理論進行小子樣可靠性評定過程中,為瞭儘可能少做現場試驗,必鬚充分利用各種先驗信息,穫取閤理的先驗分佈。提齣瞭一種基于第二類極大似然估計原理(ML-II)的多源信息融閤方法,以某魚雷自導繫統的作用距離為例進行倣真分析,驗證瞭該方法的閤理性和有效性。
복잡계통가고성신식적주요특점시소자양현장시험수거화다충가이용적다원선험신식。재이용Bayes이론진행소자양가고성평정과정중,위료진가능소주현장시험,필수충분이용각충선험신식,획취합리적선험분포。제출료일충기우제이류겁대사연고계원리(ML-II)적다원신식융합방법,이모어뢰자도계통적작용거리위례진행방진분석,험증료해방법적합이성화유효성。
The main characteristics of reliability information of complex system are small sample field test data and various available multiple sources prior information. For small sample reliability assessment by Bayes theory, in order to do as little as possible field test and obtain reasonable prior distribution, all kinds of prior information must be made full use. The method of multiple sources information fusion for complex system with small sample test based on the Maximum Likelihood esti-mate of the second kind(ML-II)theory is brought forward and a simulation analysis is carried out in allusion to torpedo homing system’s effect distance. The results of simulation show that the fusion method is reasonable and effective.