高温超导磁悬浮系统可控特性研究  

Research on Controllability of Magenetic Suspension with High Temperature Superconducting Elecromagnet

作　　者：邢华伟[1] 靳雪翔[1] 周彤[1] 

机构地区：[1]清华大学自动化系,北京100084

出　　处：《电气自动化》2005年第5期21-23,共3页Electrical Automation

基　　金：清华大学基础研究基金(JC2002025);教育部优秀青年教师资助计划;教育部跨世纪优秀人才培养计划;国家自然科学基金(60174022)

摘　　要：本文利用实验装置研究高温超导磁体在磁悬浮系统中应用的可能性。通过一个简单的高温超导磁悬浮实验系统,证明了以高温超导线材(Bi 系)绕制的磁体可以实现稳定的悬浮控制。同时,通过合理的控制器设计,闭环系统可以实现很强的对负载变化的鲁棒性。另外,在实验中还发现高温超导磁体在控制时表现出和普通磁体不同的一些特性。主要体现为当闭环系统处于稳态时,在没有任何显著外部干扰作用的情况下,控制器的输出有较大幅度的阶跃性变化。这些现象为进一步的研究提供了方向。In this paper, a simple experimental system is built to investigate the applicability of high temperature superconducting electomagnets in magnetic suspension systems. Based on the experiments , it is proved that high temperature superconducting elecromagnets can be stably suspended. It is also found that through appropriate controller design, the closed-loop system has good performance in robustness against load variations. Compared with ordinary electomagnets, high temperature superconducting electo-magnetic suspension systems have some remarkably different behaviors, viz, the output of the controller has fairly large step form variations even when the system is stably suspended and significant external disturbances do not exist. This phenomenon implies that further researches are required in order to develop a commercial system.

关 键 词：高温超导磁体 磁悬浮 控制特性 可控性 鲁棒性 

分 类 号：O442[理学—电磁学]