磁耦合谐振无线电能传输系统的输出鲁棒控制

摘要

The loads and resonant parameters of the magnetic coupling resonant wireless power transmission system are subjected to the influence of the external environment and change, and the operating frequency may randomly drift to make the model parameters uncertain. In order to solve the problem of the robustness output control with uncertain parameters, the H∞controller is designed by using the Matlab robust control toolbox based on H∞control theory. The robustness stability and performance of the closed-loop system are analyzed by using the structure singular method. The experimental results show that the H∞ controller realizes the output robustness control of the closed-loop perturbation system and provides a general design method for such high-order nonlinear uncertain closed-loop perturbation system.%磁耦合谐振无线电能传输系统的负载和谐振参数会因为受到外界环境的影响而发生变化，系统工作频率发生随机漂移，导致模型参数存在不确定性。针对参数不确定下的输出鲁棒控制问题，基于H∞控制理论，应用matlab 鲁棒控制工具箱设计H∞控制器，并利用结构奇异值法分析了闭环系统的鲁棒稳定性和鲁棒性能。结果表明，在H∞控制器的作用下，实现了闭环摄动系统的输出鲁棒控制。并为这种高阶非线性不确定闭环摄动系统提供一种通用的控制器设计方法。