A Study on the Sensor Applications for Position Detection and Guideway Monitoring in High Speed Maglev

Abstract

The high speed maglev is mainly characterized by propulsion using linear synchronous motor (LSM) and vehicle levitation from the guideway surface. In LSM propulsion control, the position detection sensor is used to detect running vehicle position for synchronized current generation. To maintain the stable levitating condition during vehicle running, the irregularity of guideway surface should be monitored by sensors measuring the displacement and acceleration between vehicle and guideway. In this study, the application methods of these sensors in the high speed maglev are investigated and through the experiments by using the small-scale test bed, the validity of examined methods is confirmed.

Design and Test of Composite Relative Position Sensor for High-Speed Maglev Track Measurement System

“…Index Terms-Maglev train, Track measurement, Relative position sensor, Dynamic response, Equivalent inductance method I. Introduction N the high-speed maglev track irregularity measurement system, track geometry and position data are collected at equal space intervals [1]. Since the maglev track itself is a linear synchronous motor, the stator of the track has a cogging structure, so the measuring point should always be located on the tooth surface.…”