不完备模型下的离散事件系统诊断方法

被引:9
作者
王晓宇 [1 ,2 ]
欧阳丹彤 [1 ,2 ]
赵剑 [1 ,2 ]
机构
[1] 吉林大学计算机科学与技术学院
[2] 吉林大学符号计算与知识工程教育部重点实验室
基金
浙江省自然科学基金;
关键词
动态诊断; 不完备模型;
D O I
暂无
中图分类号
TP181 [自动推理、机器学习];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
提出不完备模型的两种不完备性:模型定义不完备和因果关系不完备.在模型定义不完备条件下,用在线观测与模型共同约束的方法处理观测乱序及未定义事件,得到可行的诊断轨迹.相对于基于完备模型假设下不能诊断的结论,该方法扩展了诊断方法的适用范围,放松了对模型的约束要求.在因果不完备条件下,提出用因果图联系部件,解决分布式诊断中由于部件独立建模而导致的不彻底诊断,提高了诊断的精确性.通过实验验证,两种条件下的诊断方法均能在相应的不完备模型中得到预期诊断结果,并对模型进行局部修订,提高模型的完备性.
引用
收藏
页码:465 / 475
页数:11
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