移动载体上电磁轴承-转子系统的基础激励振动主动抑制  

Suppressing Vibration due to Base Motion for Active Magnetic Bearings-rotor System Equipped on Moving Carrier

作　　者：蒋科坚[1,2] 祝长生[2] 乔晓利[2] 陈亮亮[2] 

机构地区：[1]浙江理工大学信息学院,杭州310018 [2]浙江大学电气工程学院,杭州310027

出　　处：《机械工程学报》2014年第11期108-118,共11页Journal of Mechanical Engineering

基　　金：国家自然科学基金(11172261;11272288);中国博士后科学基金(2013M531452);浙江省自然科学基金(LZ13E070001;LY12E05027);浙江理工大学科研基金(1104827-Y)资助项目

摘　　要：安装在移动载体上的电磁轴承-转子系统往往会受到来自其承载基础的振动激励干扰。对单自由度支承模型和多自由度转子模型在基础激励条件下的动力学响应进行比较分析,认为可以将基础激励引起的电磁轴承-转子系统定转子之间的相对运动等效为一个由基础加速度决定的强迫振动。提出一种基于基础加速度信号作为参考信号的自适应滤波器的电磁轴承-刚性转子系统基础激励响应抑制方法,并分析该方法抑制各种类型振动的有效范围,所需滤波器的阶数,以及滤波器自适应收敛的最佳权值。在电磁轴承-转子系统试验平台上进行试验,结果表明提出的控制方法对稳定的基础激励造成的转子振动响应能有效抑制,强制定转子间隙保持稳定,避免碰撞。For the active magnetic bearings （AMB）-rotor systems equipped on the moving carrier,the undesired vibration due to its base motion is one of main disturbance sources.A single-DOF supporting model and a multi-DOF rotor model are analyzed both in the condition of the base motion.It can be indicated that,if the rotor gyroscopic effect is inconsiderable,the rotor vibration due to the base excitation can be regarded as the equivalent acceleration disturbance from its base motion.An adaptive control method based on FIR filter is proposed for suppressing the rotor vibration due to the base excitation,which needs the base acceleration signal acting as the reference signal for the adaptive filter.The indicated contents include the signal type for vibration suppressing,the orders of the adaptive filter,the optimal convergence result of the filter weights and so on.The experiments,which are carried out on an AMB-rigid rotor test rig with a vertical shaft,indicate that the proposed method achieves the good effectiveness for suppressing the rotor vibration due to the steady-going base excitation.It can avoid the rotor impacting the stator.

关 键 词：电磁轴承 基础激励 移动载体 转子振动控制 

分 类 号：TH133[机械工程—机械制造及自动化]