高性能PWM可逆直流调速系统的设计与应用
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密 惠 保
摘 要
本文从直流电动机的工作原理入手，本文设计了一套实验用双闭环直流调速系统，详细介绍了系统主电路、反馈电路、触发电路及控制电路的具体实现。对系统的性能指标进行了实验测试，表明所设计的双闭环调速系统运行稳定可靠，具有较好的静态和动态性能，达到了设计要求。采用MATLAB软件中的控制工具箱对直流电动机双闭环调速系统进行计算机辅助设计,并用SIMULINK进行动态数字仿真,同时查看仿真波形,以此验证设计的调速系统是否可行.
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关键词 直流电机 直流调速系统 速度调节器 电流调节器 双闭环系统 仿真
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[资料来源：www.THINK58.com]
[资料来源：http://THINK58.com]
Abstract
DC motor has been widely used in the area of electric drive because of its neatly adjustment, simple method and DC motor has been widely used in the area of electric drive because of its neatly adjustment, simple method and smooth control in a wide range, besides its control performance is excellent. Beginning with the theory of DC motor, this dissertation builts up the mathematic model of DC speed control system with double closed loops, detailedly discusses the static and dynamic state performance of the system. Afterward, according to automation theroy this papar calculates the parameters of the system. Then, this dissertation simulates and analyzes the system by means of Simulink. The results of simulation are consistent with theory calculation. Some experience was acquired through simulation. Based on the theory and simulation, this dissertation designs a DC speed control system with double closed loops, discusses the realization of main circuit, feedback circuit, control circuit and trigger circuit. The results of experiment show that the static and dynamic state performance of this system are good, which indicate that the design can meet the requirements.Computer-aided analysis and design are carried out for speed-controlling system of the d-c motorby by using TOOL BOX and SIMULINK.
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Keywords: DC motor,DC governing system,speed governor,current governor,double loop control system,simulink
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