摘要
研制了一种新型磁悬浮平台,该平台定子采用无铁心式的克莱姆绕组,消除了固有齿槽效应,动子采用Halbach 磁阵列结构方式,由于平台输出推力与悬浮的稳定性主要与其气隙磁场的分布情况有直接关系,因此提高气隙磁场的正弦分布是改善其工作特性的难点和重点. 为了改善气隙磁场的分布问题,提出了一个优化磁场分布的目标函数,并采用步长加速法对平台磁场进行了优化设计,大大降低了磁场谐波分量,改善了气隙磁场分布状态. 将优化结果运用到实际的平台中,对该运动平台进行了阶跃响应实验,实验结果表明满足平台需要达到纳米级精度的要求.
A novel magnetic stage was proposed,its stator is designed with ironless windings,and this stage eliminates the torque due to slot effect. Its rotor adoptes Halbach magnetic array. The torque and suspend stability of stage are related to the sine level of air gap magnetic field distribution,so how to strengthen the sine level of air gap magnetic field distribution is the emphasis and difficulty in improving its performance characteristic. In order to improve the distribution of air gap magnetic field,a further objective function of the field is proposed in this paper,and the step acceleration method is used to further optimize the magnetic field of the stage. The magnetic field distribution was greatly improved after the secondary optimization with much lower harmonic component of the magnetic field. The result of step response experiment shows that the magnetic stage meets the requirements for movement in the nanometer range.
出处
《纳米技术与精密工程》
EI
CAS
CSCD
2010年第3期221-225,共5页
Nanotechnology and Precision Engineering
基金
国家自然科学基金资助项目(60674052)
