基于算法的磁悬浮电机拖动系统多频率振动控制方法与实验研究  

Research on Multi-frequency Vibration of Magnetically Suspended High-speed Motor Based on FxLMS Algorithm

作　　者：李红[1,2] 王拓宇 郑世强[1,2] 

机构地区：[1]北京航空航天大学惯性技术重点实验室,北京100191 [2]新型惯性仪表与导航系统技术国防重点学科实验室,北京100191

出　　处：《哈尔滨理工大学学报》2015年第2期28-34,共7页Journal of Harbin University of Science and Technology

基　　金：国家自然科学基金(61203203);航空科学基金(2012ZB51019);国家重大科学仪器设备开发专项资助项目(2012YQ040235)

摘　　要：针对高速磁悬浮电机拖动系统中转子本身的不平衡振动和由于不对中导致旋转时产生二倍转频振动,提出一种基于FIR滤波器的自适应前馈控制方法,把转子之间的扰动看成是不同频率的扰动,对两轴建立数学模型,将自适应滤波器的输出作为补偿信号与扰动相抵消.通过广义根轨迹分析了加入了前馈控制后对磁轴承控制系统稳定性的影响,并分析了在不同步长不同阶数下自适应前馈控制器的性能.仿真结果表明,该方法能有效地抑电动机转子轴的基频和二倍频振动,在电机对拖实验中,当转速为10 000 r/min时,转子基频和二倍频振动增益分别减小12.1d B和19d B,位移跳动量降低了67.56%.Due to the imbalance vibration and the twice-speed vibration because of the driveline misalignment in a high-speed magnetically levitated motor drag experiment. An adaptive feed forward method based on FIR filter is proposed. The disturbing forces between two rotors are regarded as multi-frequency disturbances. Then the model of two misaligned rotor is made, cancelling out the disturbances using the output of filter as the compensation sig- nal. Generalized root locus reflects the influence of the stability after the feed forward is added. Simulation results demonstrate that the method has a good suppression effect in the multi-frequency of the motor rotor. In a motor drag experiment, oscillations of rotor＇ s position reduce by 67.56%, and synchronous and twice vibration is reduced 12. ldB and 19dB at the speed of 10 000 r/min.

关 键 词：磁悬浮电机 不对中 FXLMS算法 多频率振动 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]