文章基本信息

标题：State estimation for a class of nonlinear systems
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作者：Benoît Schwaller ; Denis Ensminger ; Birgitta Dresp-Langley 等
期刊名称：International Journal of Applied Mathematics and Computer Science
电子版ISSN：2083-8492
出版年度：2013
卷号：23
期号：2
DOI：10.2478/amcs-2013-0029
出版社：De Gruyter Open
摘要：We propose a new type of Proportional Integral (PI) state observer for a class of nonlinear systems in continuous time which ensures an asymptotic stable convergence of the state estimates. Approximations of non-linearity are not necessary to obtain such results, but the functions must be, at least locally, of the Lipschitz type. The obtained state variables are exact and robust against noise. Naslin’s damping criterion permits synthesizing gains in an algebraically simple and efficient way. Both the speed and damping of the observer response are controlled in this way. Model simulations based on a Sprott strange attractor are discussed as an example.
关键词：non-linear systems; state observers; continuous time