Design of Compensation Coils for EMI Suppression in Magnetostrictive Linear Position Sensors

Abstract

This paper presents recent development on magnetostrictive linear position sensors (MLPS). A new compensation coil structure improves the EMI suppression and accuracy considerably. Furthermore, experimental results indicate that the new structure can improve the accuracy to ±0.13 mm nearly double the ±0.2 mm obtained with traditional structures. As another design continuation after the differential waveguide structure, this new structure is a practical and reliable implementation technique for the commercialization of MLPS.

Keywords

• magnetostrictive linear position sensor
• compensation coil
• EMI suppression