说明：  以五相无刷直流电动机为例，通过对五相无刷直流电动机的建模与仿真，进而研究无刷直流电动机带载起动过程中的电机转速、电磁转矩和各相电流，并分析参数变化对系统性能的影响。
(The five phase brushless DC motor as an example, through the modeling and Simulation of five phase brushless DC motor, and then the motor speed, electromagnetic torque and the phase current, and the influence of the parameters on the system performance were studied.)