| 一类基于模糊逻辑系统的非线性不确定系统自适应观测器设计 |
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| 引用本文： | 王银河,戴冠中.一类基于模糊逻辑系统的非线性不确定系统自适应观测器设计[J].控制理论与应用,2003,20(4):612-614. |
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| 作者姓名： | 王银河 戴冠中 |
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| 作者单位： | 1. 汕头大学,理学院,广东,汕头,515063
2. 西北工业大学,自动控制系,陕西,西安,710072 |
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| 基金项目： | 国家重点基础研究发展规划项目(G1998030471); 汕头大学科学研究启动经费(130-511010)资助项目. |
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| 摘 要： | 利用模糊逻辑系统具有充分利用专家语言信息和逼近连续函数的性质, 分析和研究了一类具有未知不确定界的非线性系统的自适应状态观测器设计问题. 观测器和自适应律的构成直接利用了系统的数学结构信息和模糊逻辑系统对不确定性的输出信息, 在较弱的假设条件下, 这种观测器与被控系统状态间的误差及各参数估计误差一致终极有界. 最后的仿真实例说明了所采用的方法的有效性.
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| 关 键 词： | 状态观测器 模糊逻辑系统 自适应律 一致终极有界 |
| 文章编号： | 1000-8152(2003)04-0612-03 |
| 收稿时间： | 2001/9/13 0:00:00 |
| 修稿时间： | 2002/11/11 0:00:00 |
Adaptive observer design for a class of nonlinear uncertain systems based on fuzzy logic systems |
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| WANG Yin-he and DAI Guan-zhong.Adaptive observer design for a class of nonlinear uncertain systems based on fuzzy logic systems[J].Control Theory & Applications,2003,20(4):612-614. |
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| Authors: | WANG Yin-he and DAI Guan-zhong |
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| Affiliation: | Science College, Shantou University, Guangdong Shantou 515063, China;Department of Automatic Control, Northwestem Polytechnic University, Shanxi Xi'an 710072, China |
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| Abstract: | By employing fuzzy logic system with the properties of fully utilizing linguistic information from experts and approximating any continuous function with arbitrariness, the adaptive laws and state observers were synthesized for a class of nonlinear systems with uncertainties, the bounded functions of which were unknown. The architecture of laws and observers depended directly on the information from the construction of the systems controlled and the fuzzy logic system. Under some simple conditions, the laws and state observers made the state error of systems controlled and parameter estimate errors uniformly ultimately bounded (UUB). Finally, the simulation shows the validity of the method. |
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| Keywords: | state observer fuzzy logic system adaptive law UUB |
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