A Novel Inductive Position Sensor for Motion Control in Harsh Environments

This paper presents a novel inductive position sensor designed for motion control applications in harsh environments. Traditional angle sensing technologies such as optical and magnetic encoders often suffer from performance degradation under extreme conditions including high temperature, humidity, and radiation. The proposed sensor operates based on electromagnetic inductance variation caused by air-gap modulation, offering robust and contactless angle measurement. Its integration into position and velocity control loops of a rotary motor demonstrates the sensor's capability to provide reliable feedback for closed-loop control. Experimental validation confirms stable and accurate motor performance, supporting the sensor's applicability in industrial and robotic systems operating under challenging environmental conditions.