The main contributions of the dissertation are as follows:1 Reviewed the developments and research situation of rough set theory. Discussed the common approaches in industrial modeling, control and FDD.

• 回顾和总结了粗糙集理论的发展和国内外的研究现状，讨论了其在复杂工业过程建模、控制与故障诊断中应用的一般方法。