Redundant Control of Electric Aircraft Motor Based on Digital Twinning

In the cruising process of electric aircraft, due to the adverse climatic environment, It is easy to cause line break of the motor position sensor in the electric propulsion system and endanger the flight safety of aircraft. A redundant control method of electric aircraft motor based on digital twin is proposed to solve the open circuit fault of position sensor. Firstly, the digital twin model of PMSM is constructed based on MRAS. Secondly, the digital model is used to estimate the rotational speed and compare it with the actual value. After judging the sensor fault, the system is switched to the observed value in time to ensure the stable operation of the system. Finally, to verify the feasibility of the proposed method, a simulation model of the system is built, and the system simulation test is carried out. The simulation results show that the control strategy can ensure the normal operation of the system when the position sensor breaks down.