Abstract: In order to enrich the experimental content of the university experimental teaching platform, a programmable brushless motor control experimental system is developed. To address the problems of inflexible control mode and poor versatility in existing brushless controllers, the experimental system provides a repeatable development scheme, which can directly drive a Hall brushless motor by establishing a free mapping between control signals and motor outputs using its accompanying upper computer programming software. The hardware is based on ARM(Advanced RISC Machine)-Cortex M3 MCU(Multipoint Control Unit), which can support digital level, analog signal and PWM(Pulse Width Modulation) signal input at the same time. The upper computer software is developed based on PyQt5, including the guide window interface and the main window. After testing, the motor can communicate with external devices according to the customized control signal and can reach the expected design speed of the program, and the system can provide a new experimental solution for teaching of motor control.

Key words: brushless DC electric motor ( BLDC ) control, experimental system, PyQt5 software, graphical programming