磁力轴承间隙的闭环测量-eddy

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.