The Research of Aero-engine Digital Twin Model Based on Model-driven and Data-driven Fusion Method

With the rapid development of multi-field physical modeling, sensor network, big data processing and analysis and other information technologies, digital twin technology is gradually applied in the field of complex equipment operation and maintenance. Aero-engine is a typical complex equipment. The accurate monitoring in operation and performance degradation assessment and prediction are the key problems in maintenance. According to the definition of digital, the paper puts forward the concept of aero-engine digital twin and constructs an aero-engine digital twin model based on precise physical models, historical data and sensors data. The aero-engine digital twin model can predict the physical properties and can be applied to accurate monitoring in operation and performance degradation assessment and prediction.