摘要
本文介绍一个基于倒挂吸引式 (EMS)原理的高温超导磁悬浮试验装置 .这个装置由高温超导磁体、单臂梁金属导轨、位置传感器、控制电路等组成 .绕制超导磁体线圈所用的是Bi 2 2 2 3/Ag高温超导线材 .超导磁体工作在激磁电流为 3.2A时 ,在 5mm的空气间隙中产生 0 .2 1T的磁通密度 ,与单臂梁金属导轨可产生 72N的垂直悬浮力 .通过引入压控电流源 ,利用常规的超前—滞后校正实现了该磁悬浮装置的稳定悬浮和鲁棒控制 ,在负载变化 87.5 %的情况下仍能实现超导磁悬浮装置的稳定悬浮 .该试验装置首次验证了高温超导线圈的可控性问题 。
An EMS based HTS maglev demonstrator was presented.The fully integrated system consists of HTS coils,a mechanical lever,a control and position sensor and a power supply.Two HTS coils made of Bi\|2223 multi\|filamentary tape were introduced to provide the magnetic motive force(MMF).Operating at 3.2A,the magnetic circuit could generate a flux density 0.21T in a 5mm air gap,and thus could provide a lift force up to 72N.A classical lead\|lag compensator was proved to be very robust to qualify the controllability requirement even when the load was varied to almost 87.5% of its original one.The purpose of this project is to demonstrate the feasibility and stability of HTS coils in maglev traffic applications.
出处
《物理与工程》
2004年第3期19-23,共5页
Physics and Engineering
