A new approach for selecting threshold of data discretization is brought forward, aimed at solving difficult to establish state recognition decision table in less fault samples case. Boundary values of parameter variation interval in normal working condition were used as discrete threshold. Decision table of fault diagnosis was built, and was used to solve the problem of fault diagnosis of car dumper hydraulic system. Attributes of the built decision table were reduced based on rough set theory. The simplified rules of system fault diagnosis were obtained. These rules were stored in knowledge base of fault diagnosis expert system for car dumper hydraulic system. On-site diagnosis result of expert system proves the fault diagnosis rules extracted from application of this method have high robustness.
参考文献
相似文献
引证文献
引用本文
张立杰,鄂东辰,刘小平.一种翻车机液压系统故障诊断规则提取[J].机床与液压,2017,45(17):185-188. . Fault Diagnosis Rules Extraction for a Car Dumper Hydraulic System[J]. Machine Tool & Hydraulics,2017,45(17):185-188