Fault diagnosis method and system applied to krypton filling control system

The invention provides a fault diagnosis method and system applied to a krypton filling control system, and relates to the technical field of fault diagnosis, krypton filling control examples including a target control state and a migration control state are collected, and process behavior level comparison training and control variable level comparison training are carried out on the examples, so that the fault diagnosis accuracy of the krypton filling control system is improved. Behavior characteristics and possible abnormal conditions under various different operation conditions can be learned, and the diagnosis precision of krypton filling faults can be improved. The krypton filling control expression network is trained based on the preliminary training information and the deep training information, the dependence on the knowledge of artificial experts can be effectively reduced, and the fault diagnosis speed is increased. Besides, by generating a krypton filling fault diagnosis network and using the krypt