基于电磁自愈力的转子快速自动平衡实验  

Rotor Quick Automatic Balance Experiments Based on Electromagnetic Self-Recovery Force

作　　者：黄立权[1] 王维民[1] 苏奕儒[1] 李燕[1] 高金吉[1] 

机构地区：[1]北京化工大学诊断与自愈工程研究中心,北京100029

出　　处：《振动．测试与诊断》2011年第6期704-708,810,共5页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(编号:50635010;50975018)

摘　　要：提出了一种快速相位搜索算法,利用电磁装置在特定的平面上产生幅值和相位可控的旋转矢量力来补偿转子的不平衡旋转矢量力,实现在线快速抑制单平面转子系统工频振动故障。对转子同频振动及电磁力可控特性进行了分析,建立了以转子振动响应为指标、磁极线圈电流的幅值和相位为寻优参数的控制模型,提出相位整周搜寻自动平衡算法及快速相位搜索自动平衡算法,并搭建实验台对两种算法进行对比实验研究。结果表明,当转子工作在2 100r/min时采用整周相位搜索算法,振动下降90%需要20s,而采用相位快速搜索算法在4s左右即可达到同样的降振效果,提高了转子振动故障自愈调控的效率。A fast search algorithm of phase is proposed.In particular plane of rotor,the electromagnetic device is used to generate rotating vector force,of which amplitude and phase can be controlled,to compensate the synchronous unbalancing force of rotor system.In this way,single plane rotor system synchronous vibration fault is eliminated online.Rotor synchronous vibration and electromagnetic controllable characteristics are analyzed firstly,and then,theoretical analysis on the rotor system is done also.Based on these analyses,an optimal control model is designed,in which rotor vibration response is regarded as control target and the amplitude and phase of coil current are regarded as optimal parameters.As a result,complete period search algorithm and fast search algorithm of current phase are proposed.At last the test equipment is established for experimental study.When the rotor is working at 2100r/min,the results of synchronous vibration suppression show that,using complete period search algorithm,the decline in vibration 90% need 20 seconds,and using fast search algorithm in 4 seconds can achieve the same effect.Obviously,the fast search algorithm of phase greatly improves the rotor vibration fault self-recovery regulation efficiency.

关 键 词：电磁力 振动 自动平衡 自愈调控 寻优控制 

分 类 号：TH133[机械工程—机械制造及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]