A Study on the Real-Time Measurement for Guideway using Levitatin System of High-Speed Maglev

초록

The electro-magnetic suspension type Maglev train requires a guideway with very precise uniformity in order to keep the required mean operating clearance within the design ranges of suspension air-gap and to reduce the passenger cabin acceleration below the specified level and it needs to check the irregularity of guide. This study presents a method for measuring the guideway irregularity through air-gap and acceleration signals used in the levitation system of electromagnetic suspension type Maglev. The data measured by air-gap sensors in the Maglev system and acceleration sensors could be converted into absolute air-gap and relative air-gap values. Absolute air-gap can be obtained by integrating the value measured by acceleration sensor twice and Acceleration sensor signal value after passing the high-pass filter is added to the absolute air-gap to calculate the absolute acceleration value. Such converted values are used to measure the guideway irregularity. Simulation results showed the presented method to be rational.