Abstract
The purpose of this paper is to present a framework to analyze the interaction between an actively controlled magnetic levitation vehicle and a guideway structure under gusty wind. The equation of motion is presented for a 30-dof maglev vehicle model consisting of one cabin and four bogies. In addition, a lateral electromagnetic suspension (EMS) system is introduced to improve the running safety and ride quality of the maglev vehicle subjected to turbulent crosswind. By using the developed simulation tools, the effects of various parameters on the dynamic response of the vehicle and guideway are investigated in the case of the UTM maglev vehicle running on a simply supported guideway and cable-stayed guideway. The simulation results show that the independent lateral EMS and associated control scheme are definitely helpful in improving the running safety and ride quality of the vehicle under gusty wind. In the case of the cable-stayed guideway, at low wind speed, vehicle speed is the dominant factor influencing the dynamic responses of the maglev vehicle and the guideway, but at wind speed over 10 m/s, wind becomes the dominant factor. For the ride quality of the maglev vehicle, wind is also the most influential factor.
Highlights
The maglev vehicle is expected to replace the conventional wheel-rail system for low and medium speed public transportation, because of its advantages, which include comfortable ride, antinoise feature, reduced risk of derailment, and reduced cost for guideway maintenance [1]
This study presents a framework for the 3D interaction analysis of the maglev vehicle and the guideway structure
Independent lateral electromagnetic suspensions and their control scheme are proposed to improve the driving stability and riding comfort of the maglev vehicle subjected to turbulent wind
Summary
The maglev vehicle is expected to replace the conventional wheel-rail system for low and medium speed public transportation, because of its advantages, which include comfortable ride, antinoise feature, reduced risk of derailment, and reduced cost for guideway maintenance [1]. Zheng et al [9] performed numerical simulations of a coupled 5-dof maglev vehicle-guideway system with a controlled magnetic force. Lee et al [15] developed a numerical model for a dynamic interaction analysis of an actively controlled 5-dof maglev vehicle and flexible guideway structure. Kwon et al [22] performed the numerical simulation for a 11-dof maglev vehicle with equivalent passive suspension running on a suspension bridge under gusty winds. Yau [23] presented the framework for performing nonlinear dynamic analysis for a simplified 3D maglev model subjected to crosswinds. He used a clipped-LQR actuator with time delay compensation. We simulate various cases using the developed analysis framework and present the results
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