磁力軸承間隙的閉環測量-eddy

磁力軸承支撐重達40公斤的主軸。鐵磁性軸頸處在由激發線圈激發的磁場內。為了測量軸承間隙，需要安裝兩支互成九十度的電渦流傳感器。為此，需要使用非接觸式傳感器，用于超清環境以及極端環境溫度下的測量。

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.