基于联系度容差关系的不完备信息故障诊断

Diagnosis for Incomplete Information Based on Connection Degree Tolerance Relation

针对不完备信息条件下的故障诊断问题,研究了一种基于(α,β,γ)联系度容差关系的故障诊断方法.定义不完备诊断信息系统以描述不完备诊断信息,定义(α,β,γ)联系度容差关系以衡量对象间的同一、对立和不定关系;提出了基于(α,β,γ)联系度容差关系的属性约简方法,设计了基于最优同一度的不完备信息故障诊断方法;将该方法应用于管理控制计算机的故障诊断,实例验证了方法能有效处理不完备信息,显著提高了不完备信息条件下的故障诊断准确率.

To utilize the incomplete information effectively,a diagnostic approach was proposed based on（α,β,γ） connection degree tolerance relation.Firstly,the incomplete diagnostic information system was defined for equipments＇ incomplete information,also（α,β,γ） connection degree tolerance relation was defined for their consistent,inconsistent or uncertain relationships.Then,attribution reduction method was researched based on the new tolerance relation,and new diagnostic method was designed based on optimized inconsistent degree.At last,the designed method was validated with the diagnosis of some-type controlling processor.Cases show that this approach can deal with incomplete information effectively,and enhance the diagnostic accuracy remarkably.