Based on rough sets theory, crude domain knowledge rules are extracted; dependent factors and antecedent coverage factors of rules are calculated from sample data.

• 该方法充分利用软计算中的模糊集合理论，人工神经网络，粗糙集理论和遗传算法等计算方法优势，弥补它们相互的不足，进行故障诊断。