Device fault diagnosis method based on digital twin server

Abstract

The digital twin is a virtual replica of a physical system that can be used to simulate and analyze its behavior. In fault diagnosis, digital twin technology is used to create a virtual model of an industrial system, and simulate different scenarios to identify the causes of the fault, and predict the system behavior under different conditions. We propose an equipment fault diagnosis method based on digital twin server. Digital twin server is the intermediary between digital model and real device data interaction. Firstly, the principle and function of digital twin and digital twin server are introduced. Then the method of using digital twin server in equipment fault diagnosis is described. Finally, taking the fault diagnosis of underwater propeller as an example, the validity of the fault diagnosis method based on digital twin server is tested. The digital twin fault diagnosis system of underwater propeller connects the digital model and the real sensing equipment, realizes the fusion of virtual and reality, and the accuracy of the resolution of the short-circuit fault between turns of the stator winding of underwater propeller can reach 85%.