A novel approach to fault diagnosis in systems based on rough sets theory was presentod which can extract rules from crude data using reduction theory.

• 针对设备的各种故障 ,利用粗糙集优越的约简理论 ,对系统的量测数据进行诊断规则提取与简化 ,并通过对多个约简表关键信息的综合 ,形成一种混合策略的诊断规则。