Research of Synthesized FDD Method for Control System

In this paper,a syntheized FDD method of control system is proposed to resolve the difficulty caused by system complexity.The problem of control system FDD is firstly disassembled to a multi grade course,and then the causality network method and the STF method are applied on different levels.By co appling these two different FDD methods on different levels of system FDD,as it was taking the advantages of the both at same time,the simulation result proves the validity of this synthesized FDD method.