中文摘要：

搭接结构是高速磁浮列车悬浮系统的基本组成单元,相邻磁铁电流平衡是列车正常运行的必要条件.磁浮列车悬浮系统的间隙传感器往往存在测量静差,引起悬浮系统的搭接结构两侧电流不平衡.本文根据动力学和电磁学理论建立搭接结构数学模型;分析电流不平衡现象的产生及其对系统的不利影响,提出3种电流平衡算法;分别将搭接结构的两侧电流瞬时值之差、两侧电流均值之差、两侧电流差的积分引入控制量,在起浮阶段、外力干扰、间隙干扰三种条件下对比各控制算法.得出结论：将两侧电流差的积分引入反馈能实现搭接结构左右两侧电磁铁电流平衡,提高系统抗干扰能力,有利于高速磁浮列车的安全稳定运行.

英文摘要：

Suspension joint-structures are the basic units of a high-speed maglev train. Balance of currents of ad- jointing magnets is essential to train operation safety. Gap measurement errors cause current unbalance in the joint-structure. In this paper, the numerical joint-structure model was established in accordance with the theo- ries of dynamics and electromagnetism. The cause and bad influence of unbalancing of currents were analyzed. Three algorithms for current balancing were proposed. The first one added the difference of instantaneous cur- rents to the control item. The second one added the difference of average currents to the control item. The third one added the integral of the difference of currents to the control item. The three algorithms were com- pared for the stage of starting suspension and under the condition of force interferences and gap interferences. The simulations indicate that the third algorithm can keep currents balancing in the two electromagnets and can improve the anti-interference performance of the train control system, thus benefiting safe and stable operationof high-speed mag｜ev trains.