Research on reliability of motor controller for electric aircraft

Abstract

To evaluate the reliability of the motor controller of electric aircraft, the hardware circuit of the motor controller was studied, and a reliability evaluation model combining fault tree analysis and Monte Carlo was established. The working principle of the motor controller hardware circuit and the failure mode of the controller is analyzed. The failure rate of each failure mode is calculated by fault tree analysis, and the reliability evaluation index of the controller is obtained by processing the failure rate data with the Monte Carlo simulation method. The results indicate that the failure rate of the controller does not exceed 0.01, meeting the operational requirements.