中文摘要：

为改善Buck变换器的控制性能,对基于模型参考自适应控制的Buck变换器电压控制方案进行了研究.首先基于小信号扰动法建立了Buck变换器的小信号解析模型;然后分析给出了自适应参考模型的设计依据,总结了设计步骤,并对自适应控制器的设计方法、关键参数的取值和影响进行了归纳;最后在Matlab/Simulink平台下搭建了频域和时域仿真模型,对文中重要结论进行了验证,证实了MIT MRAC用于Buck变换器控制的可行性和有效性.

英文摘要：

In order to improve the control performance of Buck converter, the voltage control scheme of Buck con- verter based on model reference adaptive control is studied. Firstly, small-signal model of Buck converter is built based on small signal disturbance method. Then the design principles of adaptive reference model is analyzed and presented, the design steps is also summarized. Besides, design method of adaptive controller, values and influences of key parameters are concluded. Finally, frequency-domain and time-domain simulation model are built in Matlab/Simulink platform, the important conclusions in this paper areverified by simulation results. The simulation results prove that MIT MRAC scheme is feasible and effective to Buck converter control.