引用本文:曾 珂,张乃尧,徐文立.典型T-S模糊系统是通用逼近器[J].控制理论与应用,2001,18(2):293~297.[点击复制]
ZENG Ke,ZHANG Nai-yao,XU Wen-li.Typical T-S Fuzzy Systems Are Universal Approximators[J].Control Theory and Technology,2001,18(2):293~297.[点击复制]
典型T-S模糊系统是通用逼近器
Typical T-S Fuzzy Systems Are Universal Approximators
摘要点击 1930  全文点击 1468  投稿时间:1999-07-15  修订日期:2000-02-14
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DOI编号  10.7641/j.issn.1000-8152.2001.2.032
  2001,18(2):293-297
中文关键词  典型T-S模糊系统  通用逼近性  在线学习
英文关键词  typical T-S fuzzy systems  universal approximation  online learning
基金项目  国家自然科学基金(69774015); 清华大学基础研究基金资助项目.
作者单位
曾 珂 清华大学 自动化系, 北京 100084 
张乃尧 清华大学 自动化系, 北京 100084 
徐文立 清华大学 自动化系, 北京 100084 
中文摘要
      研究的多输入单输出T-S模糊系统采用输入变量的线性函数作为规则后件, 称为典型T-S模糊系统, 在每个输入变量的模糊子集满足一致性以及隶属函数连续且分段可微的条件下, 证明了典型T-S模糊系统是通用逼近器. 以此为基础, 提出当典型T-S模糊系统采用BP算法进行在线学习时, 可以仅调节规则后件的参数, 而同时仍然能够确保通用逼近性.
英文摘要
      The multi input single output T-S fuzzy systems investigated in this paper, named as typical T-S fuzzy systems, use linear functions of input variables as rule consequents. On the condition that fuzzy sets of each input variable are consistent and all the membership functions are continuous and piecewise differentiable, we proved that typical T-S fuzzy systems are universal approximators. Based on the proof, we further pointed out that it's feasible to modify only the rule consequent parameters of typical T-S fuzzy systems when it carries out online learning, however the universal approximation capability is still ensured.