The principle of electric eddy current sensors is introduced. The method to measure displacement using an electric eddy current sensor is given.

本文简单介绍了电涡流传感器的原理，给出了利用电涡流传感器测量位移的方法。

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A mathematical model of transient electric field is deduced, which takes dielectric polarization loss and displacement current into account.

推导出了考虑介质极化损耗和位移电流情况下暂态电场计算的数学模型。

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The principle of paper thickness on-line measurement using displacement differential method based on laser displacement sensor and electric eddy current displacement sensor is introduced.

介绍了基于激光位移传感器与电涡流位移传感器的位移差动法在线检测纸坯厚度的原理及测量系统的软硬件设计。

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