基于变尺度混沌搜索的永磁球形电机的位置检测  

Detecting Rotor Orientation of Permanent Magnetic Spherical Motor Based on Mutative Scale Chaos Search

作　　者：雍爱霞[1] 王群京[2] 张胜虎[1] 

机构地区：[1]合肥电子工程学院,合肥230037 [2]安徽大学,合肥230036

出　　处：《系统仿真学报》2009年第15期4722-4725,4731,共5页Journal of System Simulation

基　　金：国家自然科学基金(50377010;50677013)

摘　　要：介绍了永磁球形步进电机的模型,在转子球面上进行随机编码,96个光电传感器的输出表示转子的方位角。根据球形电机的特殊结构和旋转特点,对位置检测系统进行数学建模,对转子球体的目标节点采用改进的变尺度混沌搜索方法,将混沌变量的动力学方程映射到位置空间。当搜索到的较优值次数或循环次数等于设置的初始条件时缩小搜索空间,搜索精度取决于传感器的分辨率与搜索终止条件。The permanent magnetic spherical stepper motor model was introduced, random encoder was painted on the surface of the rotor, and outputs of 96 optoelectronic sensors were used to identify the rotor orientation. On the basis of the special structure and rotational character, the system of detecting the rotor orientation was modeled, and an improved mutative scale chaos search algorithm was adopted to search the goal node, also the dynamics equation of chaos variable mappings to the orientation space. When the number of either searched local minima or cycles is equal to the initial value, the search space is dynamic reduced, and the search precision lies on the sensor resolution and the search stop condition.

关 键 词：球形电机 随机编码 变尺度 混沌搜索 优化 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]