Abstract:

The deformation and displacement of magnet and thermal shield will take place due to the temperature change during EAST operating. In order to measure the displacement , an extended arm is used to transfer it to a place where it is easy to be measuret and the variation of displacement is changed to voltage data by rheostat , finally the displacment data is obtained from voltage data. This system mainly focused on how to measure the displacement of magnet and thermal shield in EAST.

Key words: EAST, Magnet , Thermal shield , Displacement measurement , Displacement transfer

摘要：

EAST运行中的温度改变会导致磁体及冷屏产生形变和位移。为了测量此位移的变化, 利用一个延长臂, 把位移转移到较易测量的位置, 然后采用直滑式电位器把位移变化转换成电压变化并测量出其值, 最终转换成位移的变化值。该测量系统解决了EAST装置中磁体和冷屏位移测量的难题。

关键词: EAST, 磁体, 冷屏, 位移测量, 位移转移