基于电磁自愈力的转子自动平衡方法与实验研究  

Rotor automatical balancing method and test based on electromagnetic self-recovery force

作　　者：黄立权[1] 王维民[1] 苏奕儒[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：《振动与冲击》2011年第1期208-212,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(50635010;50975018)

摘　　要：提出一种转子同频(基频)振动的在线消除策略,该策略利用电磁力执行机构给转子施加一个和转子转速同频率的旋转矢量电磁力,该力在转子测振平面上引起的振动用于抵消转子的初始振动,从而实现同频振动的在线消除。本研究首先对转子同频振动及电磁力可控特性进行分析;接着对系统进行理论分析,在此基础上建立了以转子振动响应为指标、磁极线圈电流幅值和相位为寻优参数的寻优控制模型,并提出相位整周搜寻算法;运用Matlab/Simulink软件对算法进行仿真分析;最后建立试验装置并进行实验研究,结果表明本文提出的控制策略可以有效降低转子同频振动。A strategy to eliminate synchronous vibration of a rotor system online was presented. It utilized electromagnetic actuator to generate a synchronous rotating electromagnetic force, and the electromagnetic force was used to suppress the rotor synchronous unbalance vibration in the plane of the rotor vibration monitoring. Firstly, the rotor synchronous vibration and the electromagnetic force controllable characteristics were analyzed. Then, theoretical analysis was canducted to the rotor system. Based on these analyses, an optimal control model was designed, the rotor vibration response was regarded as the control target, the amplitude and phase of the coil current were regarded as optimal variables. And the current phase whole period search algorithm was proposed. Simulation was carried out. At last, the test equipment was established to be used for experimental study. The experimental results showed the proposed algorithm is effective for the unbalanced synchronous vibration suppression.

关 键 词：电磁力 振动 自动平衡 自愈调控 寻优控制 

分 类 号：TH113[机械工程—机械设计及理论] TP273[自动化与计算机技术—检测技术与自动化装置]