转子系统随机支撑刚度参数的设计研究  

Design of the Random Support Stiffness of a Rotor System

作　　者：程敏[1] 潘勇[2] 刘保国[3] 

机构地区：[1]中原工学院信息商务学院机械工程系,河南郑州451191 [2]河南机电职业学院机械工程系,河南郑州451191 [3]河南工业大学机械电子工程研究所,河南郑州450001

出　　处：《机械设计与制造》2014年第10期229-232,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(10872064);河南省教育厅科学技术研究重点项目(14A460011)

摘　　要：为获得转子系统实验研究所需的随机支撑刚度参数,基于变刚度电磁感应式执行器设计了一套适合转子系统结构特点的电磁支撑装置。通过对电磁支撑装置支撑刚度参数数学模型的分析,得到叠加电流法、模拟电流法、样本电流法等三种产生随机支撑刚度参数的方法。结合三种方法的对比分析结果和实验室现有实验条件,决定采用样本电流法作为随机支撑刚度参数产生的方法。根据该方法设计了电磁支撑刚度实验识别系统,并对实验识别值进行概率分布检验。结果表明,利用该方法产生的电磁支撑刚度参数具有良好的随机变化特征,可以满足随机支撑刚度参数转子动力学问题实验研究需要。In order to obtain the random support stiffness parameter to meet the needs of experimental study of a rotor system, and based on electromagnetic actuator with variable stiffness, the electromagnetic support device was designed, which well adapted to the structure characteristics of the rotor system The mathematical model of support stiffness parameter of the electromagnetic support device was analyzed, as well as the three methods including superimposition current method, simulation current method and sample current method were developed to get the random support stiffness. Comprehensively considering the results of comparative analysis and laboratory experimental conditions ,the sample current method was used as generation method of random support stiffness parameter. With the help of the sample current method, the experimental identification system for the electromagnetic support stiffness was established, and the experimental identification values were used to check the probability distribution of electromagnetic support stiffness parameter. The results showed that the electromagnetic support stiffness parameter has a good random variation features, and meets the needs of experimental study the problem of rotor dynamics with random support stiffness parameter.

关 键 词：随机支撑刚度 电磁支撑装置 转子系统 样本电流法 

分 类 号：TH16[机械工程—机械制造及自动化] TH113.1