径向四自由度主动磁悬浮轴承控制器研究与探讨  

A Study and Discussion on a Controller for Radial Four-degree Freedom Active Magnetic Bearing

作　　者：朱熀秋[1] 徐龙祥[2] 

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013 [2]南京航空航天大学机电工程学院,江苏南京210016

出　　处：《应用科学学报》2002年第1期55-60,共6页Journal of Applied Sciences

基　　金：航空科学基金资助项目 ( 98C5 2 0 2 5 ) ;江苏省自然科学研究项目

摘　　要：在建立径向四自由度磁轴承系统状态方程基础上 ,介绍了用最优控制理论中线性二次型方法设计磁轴承集中和分布参数控制器步骤 ,并用 MATL AB语言进行了仿真比较 ,得出磁轴承在性能方面的退化是微乎其微的 .文中简述了基于数字信号处理器 (DSP)的数字控制器硬件和软件结构、参数调试方法和实验结果 .实验表明 :用线性二次型方法设计的分散控制器 ,磁轴承转子运行在 0～ 6 0 0 0 0 r/ min范围 ,转子振动峰峰值在 2 0 μm左右 ,满足主动磁轴承性能的要求 .This paper, basing on the state equation of a radial four degree freedom magnetic bearing, presents the steps in using the linear quadratic method of the optimal control theory to design a centralized and decentralized parameters control system. Matlab language is also used to carry out simulation comparison, which proves that the difference is small. In this paper, the structure of hardware and software based on the digital signal processor, the method of debugging and the experimentation result are presented in brief. The vibration amplitude of rotor is about 20μm when the speed of rotor runs between 0 to 60 000r/min. The experiment shows that the decentralized controller based on the linear quadratic method meets the demands of active magnetic bearing system. This method may be used for reference in the study and designing of controllers for active magnetic bearing.

关 键 词：径向四自由度 磁悬浮轴承 控制器 状态方程 最优控制理论 

分 类 号：TH133.3[机械工程—机械制造及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]