PCB Motor Intelligent Condition Monitoring Based on Digital Twin

Digital Twin (DT) is the core technology of intelligent manufacturing in the future, and is an important enabling means to achieve the deep integration of digital economy and real economy. This paper takes PCB coreless axial flux permanent magnet synchronous motor (PCB motor) as the research object, and realizes the digital mapping of PCB physical entity motor by establishing high-precision electromagnetic thermal analysis model, so as to realize the estimation of key variables. In terms of electromagnetic model, this paper establishes the analytical model, magnetic flux model and loss calculation model, reflecting the three-dimensional magnetic field characteristics of PCB motor. The thermal twin model of PCB motor is built based on the thermal network to realize the thermal characteristics of the model mapping, which can realize the real-time calculation of the temperature. Finally, the twin visual interface of the motor is constructed based on Unity3D, and the collection, upload and storage of motor operating information is realized based on wireless transmission and SQLite database. The accuracy of the proposed method is verified by experiments. The example of motor digital twin established in this paper provides a typical example for the establishment of equipment digital twin system, and also lays a foundation for the further realization of remote intelligent operation and system life prediction.