主动电磁轴承转子系统自适应不平衡补偿控制  

Adaptive unbalance compensation control of active magnetic bearing supporting rotor system

作　　者：蒋科坚[1] 祝长生[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2011年第3期503-509,共7页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(10772160);国家"863"高技术研究发展计划资助项目(2006AA05Z201)

摘　　要：为了抑制振动,提高转子旋转精度,提出一种基于振动识别的不平衡补偿控制方法.该方法无需控制对象的传递函数,通过对主动电磁轴承施加试探性补偿信号,同时检测转子位移响应中不平衡振动的幅值和相位变化,直接计算出不平衡振动的Fourier系数,产生精确的补偿电磁力,实现不平衡补偿控制.在控制性能测试的实验中,振动响应的功率谱显示转速频率的振动能量有近30dB的下降.实验结果表明,该方法对不平衡振动的抑制效果是显著的.For suppressing vibrations and improving the rotor＇s rotating precision,a novel unbalance compensation method was proposed,which does not need the transfer function of plant model.The proposed method can directly obtain the Fourier coefficients of unbalance vibration and generate the accurate magnetic force to achieve unbalance compensation by injecting a trial signal into the active magnetic bearing（AMB） and meanwhile measuring the variety in magnitude and phase of the rotor＇s displacement response.Finally,in an experiment for testing the algorithm＇s efficiency and precision,approximately 30 dB reduction in unbalance vibrations was obtained in the power spectrum of rotor vibration.The experimental results indicate that the proposed algorithm is effective for suppressing rotor unbalance vibration.

关 键 词：电磁轴承 不平衡补偿 自适应控制 FOURIER系数 振动识别 

分 类 号：TH133[机械工程—机械制造及自动化]