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A Study on the Dynamic Behavior of Wheel-Type Train Propelled by Superconducting Linear Synchronous Motor

Modern Mechanical Engineering 2014年第3期4卷 144-153页

作者： Jinho Lee Changyoung Lee jeongmin jo Yongjae Han Maglev Train Research Team Korea Railroad Research Institute Uiwang-si Republic of Korea

This paper deals with a study on the dynamic behavior of 600 km/h wheel-type train propelled by superconducting linear synchronous motor (LSM). This train is of a traditional wheel-on-rail type with traction motors on wheel-bogies. However, for the 600 km/h speed, on the both sides of each vehicle, superconducting LSMs are attached and the ground coils are installed on the guideway. In this case, the guideway irregularities act as disturbance to the vehicle causing deterioration of ride comfort. And besides thrust force, the normal force could be created in superconducting LSM control, which influences vehicle dynamics during running. In this study, to examine the effect of guideway irregularity and normal force on dynamic behavior of proposed train, the vehicle dynamic model is driven and frequency analysis is performed through simulation. The simulation results show that the lateral directional acceleration is mainly influential to ride comfort;however this could be reduced effectively by electromagnetic damping force from linear generator. It is also shown that the normal force effect from superconducting LSM control is limited even though the attractive normal force acts favorably to ride comfort.

关键词： High Speed Railway Superconducting Linear Synchronous Motor Dynamic Behavior

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A Study on the Sensor Applications for Position Detection and Guideway Monitoring in High Speed Maglev

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Modern Mechanical Engineering 2014年第4期4卷 165-174页

作者： Jinho Lee jeongmin jo Yongjae Han Changyoung Lee Yan Sun Maglev Train Research Team Korea Railroad Research Institute Uiwang-si Republic of Korea

The high speed maglev is mainly characterized by propulsion using linear synchronous motor (LSM) and vehicle levitation from the guideway surface. In LSM propulsion control, the position detection sensor is used to detect running vehicle position for synchronized current generation. To maintain the stable levitating condition during vehicle running, the irregularity of guideway surface should be monitored by sensors measuring the displacement and acceleration between vehicle and guideway. In this study, the application methods of these sensors in the high speed maglev are investigated and through the experiments by using the small-scale test bed, the validity of examined methods is confirmed.

关键词： High Speed Maglev Sensor Position Detection Guideway Monitoring

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