电磁轴承耦合特性及电磁力分析  

Coupling characteristic and electromagnetic force analysis of active magnetic bearings

作　　者：邢涛[1] 张庆春[1] 李国栋[1] 梁迎春[1] 

机构地区：[1]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工业大学学报》2005年第6期748-749,778,共3页Journal of Harbin Institute of Technology

基　　金：国家自然科学资金资助项目(5880203).

摘　　要：分析了电磁轴承测量耦合特性,给出了测量耦合计算公式,建立了考虑正交结构耦合影响情况下电磁力计算公式.分析结果表明:正交结构耦合力提高了系统的负刚度,正交耦合力的大小与控制电流无关,与气隙的变化量成正比;位置刚度系数与磁极分布角度无关,而电流刚度系数与磁极分布角度相关.Measuring coupling characteristic of the active magnetic bearings (AMBs) is analyzed. Two useful formulae are derived: one is to calculate the measuring coupling coefficient, the other is to get the electromagnetic force including the orthogonal structure coupling effects. Through analyzing, it is concluded that orthogonal structure coupling force improves the system negative stiffness, and its value has no relationship with the control current, but it is proportional to the air gap. The distributing angle of magnetic pole has influence on current stiffness coefficient, but no influence on position stiffness coefficient.

关 键 词：电磁轴承 测量耦合 正交结构耦合工 

分 类 号：TM383.6[电气工程—电机]