摘要
为解决主动磁悬浮轴承在模型摄动或外界干扰时转子位置出现静态误差大、鲁棒性差等问题,采用多输入多输出积分滑模变结构控制。针对四自由度磁悬浮轴承系统,利用积分滑模变结构控制算法建立仿真模型并进行仿真研究。仿真结果表明,在积分滑模变结构控制下,系统的鲁棒性、静态误差都优于自由递阶滑模变结构控制,而且几乎没有"抖振"发生,表现出了良好的动态特性。
In order to solve the problems of big static error and poor robustness caused by model perturbation or disturbances, a novel control strategy of multiple-input multiple-output （MIMO） integral sliding mode variable structure control （ISMVSC） is introduced and used for active magnetic bearings （AMB）. For four-degree-of-freedom （4-DOF） AMB, the ISMVSC simulation model is established and simulation is implemented. The results of the simulations show that the ISMVSC control system demonstrates excellent robustness and low static error compared to free hierarchical sliding mode variable structure control. The ISMVSC control system has good dynamic performance and almost no chattering phenomena as well.
出处
《电工技术学报》
EI
CSCD
北大核心
2008年第8期36-40,共5页
Transactions of China Electrotechnical Society
基金
航空科学基金资助项目(2007ZC53036)
关键词
主动磁悬浮轴承
积分滑模变结构控制
静态误差
鲁棒性
Active magnetic bearings, integral sliding mode variable structure control, static error,robustness
