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中文摘要：
根据Buck变换器的基本原理，由PLECS建立Buck变换器本体模型，再由Simulink工具建立模糊PID控制器，两者无缝连接。其中在大偏差范围内采用PD模糊控制器疲提高其动态响应速度，而在小偏差范围内转换成PID控制，以提高其稳态精度。仿真结果表明了模糊PID控制的优越性，实现了模拟电路与数字控制的有效结合。
英文摘要：
According to basic principles of the Buck converter,a Buck converter＇s noumenon model is established based on PLECS, Then a fuzzy PID controller is set up based on the Simulink toolbox, they are connected seamlessly. When the deviation is large,PD fuzzy controller is employed to improve its dynamic performances, while contrarily a PID controller is adopted to enhance its steady-state accruacy. The Simulation results show the superiority of the fuzzy PID control, the combination of analog circuit and numeric control are realized.
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