基于fal函数的非线性PI控制器在DC-DC变换器中的应用
发布时间:2018-07-05 07:06
本文选题:非线性PI控制 + fal函数 ; 参考:《电工技术学报》2014年S1期
【摘要】:本文针对传统PI控制器存在的不足,利用fal函数和传统的PI控制器级联构造了非线性PI控制器,并通过对fal函数的特点进行理论与仿真分析,揭示了不同参数对非线性函数的影响。然后将设计的非线性PI控制器应用于DC-DC变换器的控制环节中,与传统的PI控制进行对比,本文以DC-DC变换器中的Boost变换器为例,对提出的非线性PI控制器进行研究,仿真和实验结果表明,基于fal函数的非线性PI控制器和较传统的PI控制器相比能够克服调节时间与超调之间的矛盾,可以更快速,更平稳地实现系统的动态调节。
[Abstract]:Aiming at the deficiency of traditional Pi controller, the nonlinear Pi controller is constructed by using fal function and traditional Pi controller cascade, and the characteristics of fal function are analyzed by theory and simulation. The influence of different parameters on nonlinear function is revealed. Then, the designed nonlinear Pi controller is applied to the control link of DC-DC converter and compared with the traditional Pi control. In this paper, the boost converter in DC-DC converter is taken as an example to study the proposed nonlinear Pi controller. The simulation and experimental results show that the nonlinear Pi controller based on fal function can overcome the contradiction between adjusting time and overshoot compared with the traditional Pi controller, and can realize the dynamic adjustment of the system more smoothly and more smoothly.
【作者单位】: 北京交通大学电气工程学院;北京交通大学电子信息工程学院;
【基金】:国家自然科学基金青年科学基金(51007004) 北京高等学校青年英才计划项目(YETP0569) 北京市自然科学基金(3142015)
【分类号】:TM46
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本文编号:2099405
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