Linear Inductive Position Sensor
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The aim of this project is to create a linear position sensor with an accuracy of 1 μm. Two 'driving' inductors are powered by a frequency generator with a magnitude of 4.5 V and a frequency of 1.5 kHz. The inductors create an oscillating magnetic field which induces a voltage in the unpowered receiving inductor. The change in amplitude of this voltage indicates the position of the receiving inductor in reference to the driving inductors. This project offers a low cost alternative to laser interferometry for high accuracy incremental position measurement.