Abstract:Brushless DC motor (BLDCM) was a multivariable, strong coupling, nonlinear, timevarying complex control system, the use of traditional PID control was difficult to meet the needs, so in the BLDCM control precision speed control problems, Based on the traditional PID control fuzzy control design fuzzy PID control, and on the basis of the variable domain method used to design a variable universe fuzzy PID controller. Then, using BLDCM as model, the simulation model was established by MATLAB. Simulation and experimental results showed that the BLDCM with variable universe fuzzy control had the advantages of faster response speed, smaller overshoot and higher control precision compared with the traditional BLDCM.