DC-DC变换器自适应反步控制器设计  

Design of Adaptive Backstepping Controller for DC-DC Converter

作　　者：田野 杨惠菁 张鹤旭 王玉超 TIAN Ye;YANG Huijing;ZHANG Hexu;WANG Yuchao(College of Mechanical and Electrical Engineering,Sichuan Agricultural University,Ya′an 625000,China)

机构地区：[1]四川农业大学机电学院,四川雅安625000

出　　处：《电工技术》2022年第10期1-5,共5页Electric Engineering

摘　　要：研究了存在系统不确定性以及输入电压干扰的情况下,DC-DC变换器的输出电压跟踪问题。假设输入电压扰动为连续有界函数,提出了一种结构相对简单的自适应反步控制器。在控制器设计过程中,采用了自适应动态面控制(ADSC)技术,以简化控制器结构设计。此外,利用自适应律估计负载电流的不确定性以及输入电压的干扰。通过构造李雅普诺夫函数,证明了所有闭环信号都是一致最终有界的。最后,通过仿真试验与试验平台验证了提出的控制方案的有效性。In this paper, the problem of output voltage tracking for the DC-DC converter in the presence of system uncertainty and input voltage disturbance is studied. It is assumed that the input voltage disturbance is a bounded continuous function. A new adaptive backstepping controller with a rather simple structure is proposed. In the process of controller design, the adaptive dynamic surface control(ADSC) technology is adopted to overcome the inherent complexity explosion of traditional adaptive backstepping design. In addition, the adaptation laws are used to estimate unknown parameters, which include load current uncertainty and input voltage disturbance. Furthermore, it is proved that by constructing the Lyapunov function, all the closed-loop signals are guaranteed to be uniformly ultimately bounded. Finally, a simulation experiment and experimental platform are given to illustrate the validity of the proposed control scheme.

关 键 词：DC-DC降压转换器 鲁棒控制 自适应动态面控制技术 反步法 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]