Abstract:In recent years,the automation in the industrial production,aerospace and other fields has been widely applied,automation control system emerges with the inoculation.Production automation development steadily,long-term use of traditional automatic control system fault diagnosis method in fault diagnosis rate is low,multiple data environment more follow up problems such as insufficient factor analysis algorithm.In view of the problem root reason,complex automation control system fault diagnosis method is put forward to improve design.Using data cover screen engine(GEP)for complex automation control system of data collection,sorting,analysis,model creation.By running the unit dynamic judgment module(DNGF)cooperate with multi-factor benchmark library(VSFVR),complete the traditional complex automation control system fault diagnosis method under complicated environment improvement.Through the simulation experiments show that complex automation control system fault diagnosis methods of improvement,the test parameters is better than the traditional method.