Application of Rough Set Theory in Fault Diagnosis Expert System of Rocket Engine Ground Testing Bed

摘要

In this paper, an expert system based on rough set theory, designed for rocket engine ground testing bed, is introduced. Firstly, the modified FMEA is proposed and used to acquire the deep knowledge of the expert system. Then the rough set theory (RST) is introduced and applied to reduce the redundancy information which gains by FMEA method. Furthermore, the decision rules are summarized which are used for reasoning. The experimental results show that our proposed method correctly not only extracts the domain knowledge and reduce the redundancy, but also give the decision rules.