FIELD-CIRCUIT COUPLING SIMULATION OF MAIN CARGO HATCH DOOR ACTUATION SYSTEM OF CIVIL AVIATION CARGO PLANE

The reliability of the cargo door actuation system is closely related to the safety of civil aviation cargo aircraft. In order to ensure the safety of cargo aircraft, it is necessary to consider whether the engineering can be successfully started under the worst temperature and the worst opening conditions and to conduct a high-precision simulation. To improve the simulation accuracy, the finite element method and the field-circuit coupling method are analysed and applied. The electromagnetic field equation of the circuit is calculated using the Maxwell platform, and the control circuit equation calculated by the Simplorer platform is simulated at the same time. The load side of the motor is analysed accurately and the simulation authenticity is greatly improved. To successfully start the motor in a harsh environment, the influence of high temperature on the motor is analysed to compensate for the reduction of output torque caused by high temperature. The motor is designed repeatedly to achieve the task goal. The final simulation results meet the requirements and can overcome the harsh temperature environment and the harsh open-angle environment, which provides ideas about the development and simulation of the door electrical actuation system.