基于信息熵的诊断过程认知信息流分析

Analysis of Information Flow Based on Entropy of Fault Diagnosis

从认识论和广义信息论的角度 ,认为故障诊断过程是一个认知主体借助多种认知工具进行状态辩识的过程 ,围绕故障认知的有关基本问题 ,可以从信息熵的传递过程加以解释。运用信息熵进行了数学推导 ,并阐明了诊断过程的认知信息流的流动过程。最后提出了建立多征兆域综合特征知识体的思路 ,以解决诊断信息先天获取不足和认知能力随复杂性降低的诊断知识获取问题。

Under the pointview of epistemology and generalized information theory, fault diagnosis can be regarded as the state identification process by dint of various cognitive tools. Therefore, information Entropy can be employed to explain the transfer of information during identifying the faults. The mathematical deduction of information Entropy is given and the idea of Multi-Symtom Domains Comprehensive Feature Knowledge to solve fault diagnosis problems caused by insufficient knowledge and lower cognitiving ability for complex knowledge system is presented.