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The air gap between electromagnet and guiderail in an EMS-type Maglev vehicle must be maintained within an allowable deviation by controlling the voltage on the magnet. In this type of vehicle, the air gap response is strongly dependent on the structural characteristics of the elevated guideway, such as stiffness, damping and mass. For this reason, the dynamic interaction between the vehicle with electromagnets and the elevated guideway must be understood to ensure safe running. The response of the air gap to guideway characteristics such as mass, stiffness, and damping are analyzed through vehicle tests over different guideways. Through such tests, the design requirements for Maglev vehicles and elevated guideways can be established, improving levitation stability.