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现代战争要求火炮拖动随动系统具有很高的传动性能和对其它用电设备的电磁兼容（EMC），双PW功率变换器是较为理想的选择．本文在对双PWM异步电机火炮随动系统工作原理分析的基础上，对其系统设计和实验进行了研究，提出了一种数模混合控制结构，并得到了较好的实验结果。
Modern warfare requirements artillery drag servo system with high transmission performance and other electrical equipment for electromagnetic compatibility (EMC), dual PW power converter is the ideal choice. Based on the analysis of the working principle of the servo system with dual PWM induction motors, the system design and experiment are studied. A mixed-mode digital-analog control structure is proposed and good experimental results are obtained.