This work describes a novel modeling and simulation approach of brushless DC motor control system depended on analysis of it's mathematical model. The brushless DC motor ontology model, the voltage type inverter circuit model, the hysteresis current tracking comparative model and the PID speed controller model were constructed in the Simulink environment of Matlab. S-function was used in modeling to make the model simple and reflecting its mathematical model and the essence of running principle in the furthest way. Simulation results show that the modeling method is completely feasible, and simulating efficiency is high as the simulating model running quickly. The modeling approach provides a new idea for the model construction and has important application value for the research and design of brushless DC motor control system.
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