自动化学报2009，Vol.35Issue(3)：272-280,9.DOI:10.3724/SP.J.1004.2009.00272
一类增长线性地依赖于不可测状态不确定非线性系统输出反馈控制
Output-feedback Control for a Class of Uncertain Nonlinear Systems with Linearly Unmeasured States Dependent Growth
摘要
Abstract
This paper is devoted to the problem of global stabilization by output-feedback for a class of nonlinear systems with uncertain control coefficients, stable zero-dynamics, and linearly unmeasured states dependent growth. First, by introducing two kinds of appropriate state transformations, the original system is converted into a new system with deterministic virtual control coefficients and the separated zero-dynamics. Then, a suitable observer based on high-gain K-filters is constructed for the new system, and the backstepping design approach is successfully proposed to the output-feedback controller. It is shown that the global asymptotic stability of the closed-loop system can be guaranteed by the appropriate choice of the design parameters. A simulation example is also provided to show the correctness of the theoretical results and the effectiveness of the proposed approach.关键词
Nonlinear systems/uncertain control coefficients/high-gain K-filters/output-feedback/unmeasured states dependent growth/global asymptotic stabilityKey words
Nonlinear systems/uncertain control coefficients/high-gain K-filters/output-feedback/unmeasured states dependent growth/global asymptotic stability分类
信息技术与安全科学引用本文复制引用
尚芳,刘允刚..一类增长线性地依赖于不可测状态不确定非线性系统输出反馈控制[J].自动化学报,2009,35(3):272-280,9.基金项目
Supported by National Natural Science Foundation of China (60674036), the Science and Technical Development Plan of Shan-dong Province (2004GG4204014), the Program for New Century Ex-cellent Talents in University of China (NCET-07-0513), the Key Sci-ence and Technique Foundation of Ministry of Education of China (108079), and the Excellent Young and Middle-aged Scientist Award of Shandong Province of China (2007BS01010) （60674036）
