文章基本信息

标题：Fast proportional integral phasor extremum seeking control for a class of nonlinear system
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作者：Khalid Tourkey Atta ; Martin Guay.
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2017
卷号：50
期号：1
页码：5724-5730
DOI：10.1016/j.ifacol.2017.08.1126
语种：English
出版社：Elsevier
摘要：AbstractIn 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.
关键词：KeywordsFast extremum-seeking controlstabilty analysisWiener-Hammerstein system