基于Simulink的简易手机充电器的设计与仿真

Design and Simulation of a Simple Mobile Phone Charger Based on Simulink

本文设计了一种以Buck电路控制系统为核心的简易手机充电器,实现了由220V交流电到5V直流电的AC/DC变换。利用局部线性化的方法建立了一个线性定常的小信号扰动模型,运用经典控制理论中的根轨迹法和频率响应法进行系统的稳定性分析和控制器设计,最后时域仿真结果验证了该模型的有效性。

In the paper, a simple mobile phone charger is designed with Buck circuit control system as the core part, and realizes the AC/ DC conversion from 220V AC to 5V DC. The local linearization method is used to establish a linear time-invariant small signal perturbation model;the root locus method and frequency response method in classical control theory are used to analyze the stability of the control system and the design of the controller. Finally, the simulation results in time domain verify the validity of the model.