一种变论域分层模糊控制器

Variable universe hierarchical fuzzy controller

针对分层模糊控制器规则难以设计,精度难于提高的问题,提出一种变论域分层模糊控制器。由宏观的派生性,使用继承变论域分层模糊控制规则。文中讨论了论域伸缩因子的构造,给出了变论域分层模糊控制的算法步骤。该算法提高了控制品质,避免了增加参数或改变拓扑结构的缺陷。为了证明此种控制器具有良好的逼近性能,还探讨了控制器的灵敏度。最后用双容水槽系统实验验证算法的正确性。

Because of the difficulty of designing the rules and controlling accurately in hierarchical fuzzy controller,we propove the variable hierarchical fuzzy controller(VUHFC) in which the inheritance of rules is designed by macroscopical derivation.Furthermore,we discuss the construction of the expansion factors and contraction and give the algorithm steps of adaptive hierarchical fuzzy controller.The experiment show that the algorithm has excellent control properties which to avoid the drawbacks of parameters augment and topology change.Aiming to verify the approximation property of VUHFC,we also discuss the sensitivity of VUHFC.The algorithm is validated by experience of the dual tank system.