科研

磁力轴承间隙的闭环测量-eddy

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发布日期:2014-04-30 浏览:

磁力轴承支撑重达40公斤的主轴。铁磁性轴颈处在由激发线圈激发的磁场内。为了测量轴承间隙,需要安装两支互成九十度的电涡流传感器。为此,需要使用非接触式传感器,用于超清环境以及极端环境温度下的测量。


A shaft weighing about 40 kg is supported in magnetic bearings. A ferromagnetic shaft journal is suspended in a magnetic field which is excited by surrounding excitation coils. To regulate the gap two sensors at each end measure in the radial direction,mutually offset by 90°, and one sensor measures axially against the shaft. Non-contacting and wearfree magnetic bearings are used in ultra-clean atmospheres and in extreme ambient conditions.


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