Generalized hybrid fuzzy system based on consequent direct link type hierarchy and its integral norm approximation

被引:0
|
作者
School of Mathematics Sciences, Tianjin Normal University, Tianjin [1 ]
300387, China
不详 [2 ]
100190, China
机构
[1] School of Mathematics Sciences, Tianjin Normal University, Tianjin
[2] Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing
来源
Kongzhi yu Juece Control Decis | / 10卷 / 1742-1750期
关键词
Approximation; Consequent direct link type hierarchy; Generalized hybrid fuzzy system; K-integral norm; Piecewise linear function;
D O I
10.13195/j.kzyjc.2014.1071
中图分类号
学科分类号
摘要
The methods of the consequent direct link type hierarchy and its inference rules are introduced, so that implement hierarchy for some input variables of the generalized hybrid fuzzy system. Consequently, the input and output expressions of the generalized hybrid fuzzy systems after hierarchy and the calculation formula of the total number of fuzzy rules are obtained. Then, based on the K-integral norm(a metric) and a piecewise linear function, it is proved that the generalized hybrid fuzzy system after hierarchy has the approximation to a class of integrable functions. Finally, the approximation process of the consequent direct link type hierarchy generalized hybrid fuzzy systems to the integrable functions are given by an example. The results show that the hierarchical method can not only make the total number of fuzzy rules of the original system greatly reduced, but also make the system after hierarchy has keep the approximation. ©, 2015, Northeast University. All right reserved.
引用
收藏
页码:1742 / 1750
页数:8
相关论文
共 18 条
  • [1] Raju G.V.S., Zhou J., Kisner R.A., Hierarchical fuzzy control, International J of Control, 54, 5, pp. 1201-1216, (1991)
  • [2] Raju G.V.S., Zhou J., Adaptive hierarchical fuzzy controller, IEEE Trans on System, Man, and Cybernetics, 23, 4, pp. 973-980, (1993)
  • [3] Wang L.X., Universal approximation by hierarchical fuzzy systems, Fuzzy Set and Systems, 93, 1, pp. 223-230, (1998)
  • [4] Wang L.X., Analysis and design of hierarchical fuzzy systems, IEEE Trans on Fuzzy System, 7, 5, pp. 617-624, (1999)
  • [5] Liu P.Y., Li H.X., Equivalence of generalized Takagi-Sugeno fuzzy system and its hierarchical systems, J of Beijin Normal University: Natural Science, 36, 5, pp. 612-618, (2000)
  • [6] Liu P.Y., Li H.X., Hierarchical T-S fuzzy system and its universal approximation, Information Sciences, 169, 3, pp. 279-303, (2005)
  • [7] Zhang X.Y., Zhang N.Y., Universal approximation of general binary-tree-type hierarchical fuzzy systems, J of Tsinghua University: Science and Technology, 47, 1, pp. 37-41, (2007)
  • [8] Ricardo J., Campello G.B., Wagner C., Hierarchical fuzzy relational models: Linguistic interpretationand universal approximation, IEEE Trans on Fuzzy Systems, 14, 3, pp. 446-453, (2006)
  • [9] Chen Y., Yang B., Abraham A., Et al., Automatic design of hierarchical Takagi-Sugeno type fuzzy systems using evolutionary algorithms, IEEE Trans on Fuzzy Systems, 15, 3, pp. 385-397, (2007)
  • [10] Moon G.J., Thomas S., A method of converting a fuzzy system to a two-layered hierarchical fuzzy system and its run-time efficiency, IEEE Trans on Fuzzy Systems, 17, 1, pp. 93-103, (2009)