模糊控制交流调速系统中模糊子集数的选择

以模糊控制感应电机调速系统为研究对象,系统考察了模糊子集的数量对被控系统性能和其他方面的影响。首先,导出模糊控制器输出量计算公式;对基于不同模糊子集数的模糊控制器输出进行计算和比较,在此基础上,分析了模糊子集数对系统性能的影响;最后,采用MATLAB的模糊逻辑工具箱作了大量的实验验证。文中所取得的成果对模糊控制系统的设计有着相当的指导意义。

DETERMINE OPTIMUM NUMBER OF COMPACT OVERLAPPED CLUSTERS USING FRLVQ TECHNIQUE

A method, named XHJ-method, is proposed in this letter to determine the number of clusters of a data set, which incorporates with the Fuzzy Reinforced Learning Vector Quantization (FRLVQ) technique. The simulation results show that this new method works well for the traditional iris data and an artificial data set, which contains un-equally sized and spaced clusters.