Lateral Vibration Reduction of a Maglev Train Using U-shaped Electromagnets

Abstract

For an electromagnetic suspension (EMS)-type urban Maglev train using U-shaped electromagnets, both the vertical and the lateral air gaps for levitation are maintained only by the electromagnet. The train can run over curved rails without active lateral air gap control because the U-shaped electromagnet simultaneously produces both a levitation force and a guidance force, which is dependent on the levitation force. Owing to the passive control of the lateral air gap, the lateral vibration could exceed the limits of the lateral air gap and acceleration. In this study, dynamic analysis of a Maglev train is carried out, and the effectiveness of a lateral damper for vibration reduction is investigated. To more accurately predict the lateral vibration, a Maglev vehicle multibody model including air-sparing, guideway irregularities, electromagnets, and their controls is developed.

Study on the Levitation Stability of Maglev Vehicle considering the Vibration of Steel Switch Track

“…여기서, 자기부상 제어 방식은 식(8)과 같은 전압의 변화량을 제어 하는 방식이다 [5,6]. 여기서 는 관측기(observer)를 통해 계 산된 공극을 의미하고, 는 전자석의 위치를 의미하며, k 1~k5 는 제어 게인을 의미한다.…”