试重组迁移矩阵及现场混合动平衡方法  

Trial Mass Set Transfer Matrix and Unified Field Balancing Method

作　　者：廖与禾[1] 谢航[1] 张鹏[1] 刘石 屈梁生[1] 

机构地区：[1]西安交通大学智能仪器与监测诊断研究所,西安710049 [2]广东电网电力科学研究院,广州510600

出　　处：《西安交通大学学报》2008年第11期1386-1390,共5页Journal of Xi'an Jiaotong University

基　　金：国家高技术研究发展计划资助项目(2006AA04Z429);国家自然科学基金资助项目(50775175)

摘　　要：针对全息动平衡方法在现场应用中可能存在因试重起车次数受限、无法获得足够的转子特征响应参数的问题,提出了一种基于试重组的全息现场混合动平衡方法.借鉴Darlow混合法中模态试重组的思想,通过对模态试重比的简化假设,利用迁移矩阵的线性可叠加性将对应于某单一平衡面的迁移矩阵扩展为对应于某阶模态试重组的迁移矩阵,从而减少了平衡高阶不平衡量所需的试重起车次数,提高了现场平衡效率,且平衡效果良好.通过对一台300 MW汽轮发电机组的现场动平衡过程的试验分析,表明了该方法的可行性和有效性.Limited number of trial runs in field are unable to provide enough characteristic response parameters for the holobalancing method. A new unified holobalancing method is presented. With simplified assumption made for the modal trial mass ratio and the linear response characteristic of the holobalancing technique, the transfer matrix corresponding to a certain correction plane then is extended to the trial set transfer matrix, which is related to a certain order of modal trial mass set. The number of trial runs necessary for the balancing operation is reduced and the balancing efficiency is improved. The feasibility and effectiveness of this method have been confirmed according to the analytical result of a real balancing procedure of a 300 MW turbine generator set.

关 键 词：迁移矩阵 全息动平衡 模态试重比 试重组 

分 类 号：TH113[机械工程—机械设计及理论]