Fractional-order sliding mode based extremum seeking control of a class of nonlinear systems

被引：330

作者：

Yin, Chun ^{[1
,2
]}

Chen, YangQuan ^{[2
]}

Zhong, Shou-ming ^{[3
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Automat Engn, Chengdu 611731, Peoples R China

[2] Univ Calif Merced, Mechatron Embedded Syst & Automat MESA Lab, Sch Engn, Merced, CA 95343 USA

[3] Univ Elect Sci & Technol China, Sch Math Sci, Chengdu 611731, Peoples R China

来源：

AUTOMATICA | 2014年 / 50卷 / 12期

关键词：

Sliding mode based extremum seeking control; Fractional-order sign function; Convergence speed; Tracking; Photovoltaic system; FEEDBACK GLOBAL TRACKING; STABILITY; OPTIMIZATION; ROBUST;

D O I：

10.1016/j.automatica.2014.10.027

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper develops a fractional-order sliding mode based extremum seeking controller (FO SM-ESC) for the optimization of nonlinear systems. The proposed FO SM-ESC, involving an FO derivative function (0)D(t)(q)sgn(e), 0 <= q < 1 is shown to achieve faster tracking and higher control accuracy than the integerorder (10) SM-ESC. The tradeoff between control performance and parameters selection is analyzed and visualized. The comparison between the FO/IO SM-ESC is given to reveal the potential advantages of the FO controller over the IO controller. Simulation and experimental results show that the FO SM-ESC can have a faster convergence speed and a smaller neighborhood around the optimal operational point. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：3173 / 3181

页数：9

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