Maglev vehicle-guideway coupling vibration test rig based on the similarity theory

Abstract

Based on the study of the dynamic properties of the Maglev vehicle-guideway coupling vibration system under the control of a full state feedback controller, the similarity processing was carried out between the coupling vibration system and a small scale model. The similarity ratio coefficients were obtained according to the similarity theory. The results show that the Maglev control method, calculating the controller output with the vibration information of the guideway low order mode and the magnet, is effective and can keep the system stable. For the coupling vibration system the first three modes can give, respectively, an accurate description of the system dynamic characteristics. When investigating the lower frequency characteristics of the system, the first mode will also be sufficient, especially when a large difference between the lower frequencies exists. The small scale model obtained according to the similarity theory is coincident with the original model in dynamic performance, which provides an effective methodology to set up small scale test rig for the investigation of the Maglev vehicle-guideway coupling vibration.

Keywords

Maglev vehicle similarity theory small scale model test rig vehicle-guideway coupling vibration

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