Observer-based finite-time output-feedback controller for DC-DC buck converters with unknown load variations

被引：2

作者：

Cheng, Yingying ^{[1
,2
]}

Jin, Qingchun ^{[1
]}

Du, Haibo ^{[1
]}

Xu, Yeyuan ^{[1
]}

Zhu, Wenwu ^{[1
]}

Jiang, Congrang ^{[1
]}

机构：

[1] Hefei Univ Technol, Sch Elect Engn & Automat, Hefei 230009, Anhui, Peoples R China

[2] Southeast Univ, Minist Educ, Key Lab Measurement & Control Complex Syst Engn, Nanjing, Jiangsu, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL | 2019年 / 29卷 / 15期

基金：

中国国家自然科学基金;

关键词：

DC-DC buck converter; finite-time control; observer; output-feedback control; NONLINEAR-SYSTEMS; POWER CONVERTERS; STABILIZATION; DESIGN; STABILITY; ORDER;

D O I：

10.1002/rnc.4677

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The output voltage regulation problem of a DC-DC buck converter is investigated in this paper via an observer-based finite-time output-feedback control approach. Considering the effects of unknown load variations and the case without current sensor, by using the technique of adding a power integrator and the idea of nonseparation principle, a finite-time voltage regulation control algorithm via dynamic output feedback is designed. The main feature of the designed observer and controller does not need any load's information. Theoretically, it is proven that the output voltage can reach the desired voltage in a finite time under the proposed controller. The effectiveness of the proposed control method is illustrated by numerical simulations and experimental results.

引用

页码：5274 / 5289

页数：16

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