关键词: 霍尔传感器, 故障检测, 无刷直流电动机, 可编程门阵列, 容错

Abstract: Aiming at the problem that the motor speed is unstable due to the failure of the Hall sensor, the fault-tolerant control system of the brushless DC motor was designed according to the control principle of the Hall sensor. The fault detection mechanism based on the isochronous counting method and the fault-tolerant control based on the position sensorless system were proposed. Through simulation and test platform experiments, the fault-tolerant control system based on field programmable gate array (FPGA) can significantly reduce the impact of Hall sensor fault on motor speed, so that the motor can can run stably when the Hall sensor fails.

Key words: Hall sensor, fault detection, brushless DC motor, field programmable gate array (FPGA), fault-tolerant