当低频标准振动台台面偏离其中心位置振动时,动圈绕组的一部分将处于非均匀磁场中,导致台面运动波形失真,进而影响整个标准装置的校准精度,甚至引起事故的发生。本文由此作为出发点,阐述了振动台台面漂移的因素,以及漂移给校准造成的严重后果,并着重介绍了为解决漂移而研制的中心定位仪。 When the table of the low-frequency standard vibrating table deviates from its central position, a part of the moving coil winding will be in a non-uniform magnetic field, resulting in distortion of the table motion waveform, thereby affecting the calibration accuracy of the entire standard apparatus and even causing an accident. In this paper, as a starting point, this paper expounds the factors that cause the mesa drift, as well as the serious consequences of drift to calibration. The focus of this paper is to introduce the center locator developed to solve the drift.