基于坐标变换的径向主动磁轴承容错控制  

Fault tolerant control of radial active magnetic bearing based on coordinate transformation

作　　者：崔东辉[1] 徐龙祥[1] 

机构地区：[1]南京航空航天大学机电学院,南京210016

出　　处：《控制与决策》2010年第9期1420-1425,1430,共7页Control and Decision

基　　金：国家高技术研究发展计划项目(2006AA05Z205);国家自然科学基金项目(50437010);江苏省"六大人才高峰"项目(07-D-013)

摘　　要：针对安装3个位移传感器的六极径向主动磁轴承,研究了基于坐标变换的位移传感器容错控制算法;在电流分配矩阵重构法的基础上,提出了基于坐标变换的执行器容错控制算法;并将这两种算法结合,提出了基于坐标变换的位移传感器和执行器容错控制算法;最后,在一个两自由度径向主动磁轴承实验台上对该容错控制算法进行了实验研究.实验结果表明,采用新容错控制算法可以最多在1个传感器故障和3个励磁线圈同时故障的情况下实现转子的稳定悬浮.The fault tolerant control method of displacement sensor based on coordinate transformation is studied according to a six-core radial active magnetic bearing equipped with three displacement sensors. The coordinate transformation-based actuator fault tolerant control method on the basis of current distribution matrix reconstruction is presented. The combination of these two methods derives a new fault tolerant control method of displacement sensors and actuator based on coordinate transformation. Experimental study on the new fault tolerant control method is done with a two degree of freedom active magnetic bearing test rig. The results show that the stable suspension of rotor can be achieved by using the new control method even if one displacement sensor and three coils fail at the same time.

关 键 词：径向主动磁轴承 容错控制 坐标变换 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]