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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 new type of magnetic suspension platform is developed. The stator adopts the coreless Clemson winding, which eliminates the inherent cogging effect. The mover adopts the Halbach magnetic array structure. Because the output thrust and the stability of the suspension are mainly related to the air gap Therefore, to improve the sinusoidal distribution of the air-gap magnetic field is a difficult point to focus on improving its operating characteristics.In order to improve the air-gap magnetic field distribution, an objective function to optimize the magnetic field distribution is proposed, Method was used to optimize the magnetic field of the platform, which greatly reduced the harmonic components of the magnetic field and improved the air-gap magnetic field distribution.The optimization results were applied to the actual platform, and the step response test was carried out on the platform. The experimental results showed that The platform needs to reach the nanometer precision requirement.