Research on the Test System of the BLDC Motor Based on Virtual Instrument

The brushless DC motor has been widely used in the automobile field because of its high comprehensive performance. In order to meet the requirements of the performance test of the brushless DC motor, aiming at the shortage of the traditional motor test, the motor torque speed test system based on virtual instrument is developed. The system uses the virtual instrument instead of the traditional instrument, the hardware circuit is replaced by the test software, and combined with the data acquisition card PCI-6221, to carry out data acquisition, processing and analysis of multiple channels of motor. Using LabVIEW to write the motor torque speed measurement program and the PID control algorithm program, the on-line detection and high precision speed control of the brushless DC motor speed is realized. The results show that the system is reliable and stable, and the accuracy and convenience of the motor test are improved.