The reasons of poor dynamic performance of motor drive system are analyzed in this paper.The mathematical model of the motor drive system is established by using the PI control er.Through the selection of three kinds of PI function gain value simulation,and the results are compared with the direct simulation.%分析了电机拖动系统动态性能不佳的原因。采用PI控制器,建立了电机拖动系统的控制数学模型。通过选取三种PI函数增益值进行仿真,并与直接仿真结果进行对比。结果显示,PI控制的增益取值越大,系统超调量越小,调节时间越短,即系统的动态性能越佳。为后续电机拖动控制系统的优化设计,提供了参考依据。
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