Analysis of Relative Position Sensing System for SUMA Based on LSM

초록

Position and speed information is quite crucial for traction and power control system of high speed maglev trains to ensure reliable and safety operation. To get precise position data, absolute positioning and relative positioning are required. Relative positioning is used to get high-accuracy position data and absolute positioning is used to eliminate cumulated errors from relative position signals. In this paper, LSM of SUMA system is presented and compared with that of Transrapid. To find a most appropriate relative position sensing system for SUMA, several methods are discussed and the one based on tooth-slot structure of long stator is analyzed in detail.