Analysis and Signal Processing of Relative Position Sensor System Designed for High Speed Maglev

초록

Along with increasing demands for mass transit such as rapidity, reliability and safety, traditional methods including automobiles and airline services are not enough anymore. As a new generation of transportation method, high speed maglev is a promising solution because of its high speed operation, reliable control, low energy consumption, low-maintenance and environment-friendly characteristics. Compared with conventional wheel on rail trains, high speed maglev suspends on the track and LSM (Linear Synchronous Motor) propels the vehicle. Due to its non-contact and high speed operation, real-time control is highly enhanced. And as a crucial subsystem of operation control system, sensor system is responsible for secure and reliable control. Position sensor will collect information of position, speed and direction and these information will be sent to control center for operation control. According to long stator’s special tooth-slot structure, relative position sensor is designed and studied in this paper and signal processing method is also discussed to improve accuracy.