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论文类型：期刊论文

发表时间：2016-12-01

发表刊物：NONDESTRUCTIVE TESTING AND EVALUATION

收录刊物：SCIE、EI、Scopus

卷号：31

期号：4

页面范围：289-302

ISSN号：1058-9759

关键字：Eddy current; tilt angle; displacement; sensor; finite element

摘要：For displacement measurement, to explore the influence of tilt angle on sensor's measured values, the relationship between coil equivalent inductance and lift-off under different tilt angles and the relationship between coil equivalent inductance and tilt angle under different lift-offs were investigated by the finite element method in this article, respectively. Comparing the two variation laws, the increase of tilt angle will lead to smaller sensor's measured values. Moreover, the applicability of the transformer-equivalent circuit model has nothing to do with the tilt angle. Besides, the experiments also testify that the measuring errors can be compensated well by the Gaussian function.