Fast proportional integral phasor extremum seeking control for a class of nonlinear system

被引：1
|
作者：
Atta, Khalid Tourkey [1 ]
Guay, Martin [2 ]
机构：
[1] Lulea Univ Technol, Control Engn Grp, S-97187 Lulea, Sweden
[2] Queens Univ, Dept Chem Engn, Kingston, ON K7L 3N6, Canada
来源：
IFAC PAPERSONLINE | 2017年 / 50卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Fast extremum-seeking control; stabilty analysis; Wiener-Hammerstein system; STABILITY;
D O I：
10.1016/j.ifacol.2017.08.1126
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, we present a modification of the phasor extremum-seeking control for the fast optimization of a class of Wiener-Hammerstein nonlinear dynamical systems with a general strict unimodal nonlinearity. Based on the prior knowledge of the system's relative order and number of non minimum phase zeros, the proposed approach uses a high frequency perturbation signal and the phasor of the plant output to enable fast convergence of the overall system without the need for filters of the plant's input and output. The extremum-seeking controller has two modes. In addition to the integral term, a proportional term is used to enable the application to very slow and integrating systems. Semi global practical asymptotic stability analysis of the overall system to the unknown optimum is achieved. The effectiveness of the proposed approach is illustrated using numerical examples for different types of Wiener-Hammerstein systems. (C) 2017, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.
引用
收藏
页码：5724 / 5730
页数：7
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