Simulation of BLDCM Control System Built on Matlab/Simulink

Due to the development of electronic technology, computer technology, sensor technology, power electronics technology, brushless DC motor and its control technology has been a breakthrough progress [1]. This paper selects double closed-loop control technology for brushless DC motor to regulate speed. Firstly, the principle of brushless DC motor is introduced; secondly, the model of brushless DC motor is established and mathematical analysis is carried out; thirdly, the double closed-loop PI speed control is adopted, and the design and improvement of PI controller are mainly carried out to eliminate the static difference in the steady state of the brushless DC motor[2]; lastly, based on the platform of MATLAB/SIMULINK, the simulation model of the control system is established to simulate the speed closed-loop control system of the brushless DC motor. Finally, based on MATLAB/SIMULINK platform, the simulation model of the control system is established to simulate the closed-loop control system of the brushless DC motor. The simulation results show that the model system response is fast and smooth [3]. The double closed-loop control of brushless DC motor adopts current hysteresis loop, which is simple in structure and fast in response, and has certain theoretical and application significance.