计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (29): 196-200.

• 工程与应用 • 上一篇    下一篇

一种新的ARX模型在磁悬浮系统建模中的应用

侯海良,彭 辉   

  1. 中南大学 信息科学与工程学院,长沙 410083
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-10-11 发布日期:2007-10-11
  • 通讯作者: 侯海良

Application of new ARX model to identification for magnetic levitation control system

HOU Hai-liang,PENG Hui   

  1. School of Information Science & Engineering,Central South University,Changsha 410083,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-10-11 Published:2007-10-11
  • Contact: HOU Hai-liang

摘要: 采用一种新的ARX模型(RBF-ARX模型)对磁悬浮系统进行离线建模,讨论了RBF-ARX模型的原理、结构的选取、模型参数辨识和RBF参数优化等问题。文章分别采用不同的序列作为状态变量,分别建立RBF-ARX模型,并分析了各模型的性能及可靠性。模型的预测输出和仿真结果,证实了RBF-ARX模型在非线性系统建模和辨识中的有效性。通过与ARX模型的比较,证明了RBF-ARX模型在非线性系统建模中效果更好。

关键词: 磁悬浮系统, 模型预测控制, RBF-ARX模型, 结构化非线性参数优化策略

Abstract: This paper focuses on the modeling of magnetic levitation control system using RBF-ARX model,also discuses the principium of RBF-ARX model,model structure design,model parameters identification,parameter optimization and so on.Finally,the authors have used different series as state variable,established the RBF-ARX model separately and analyzed the reliability and performance of the model respectively.The results of simulation studies finally show the effectiveness of RBF-ARX model for the modeling and identification of nonlinear systems.In contrast to ARX model,RBF-ARX model is good at modeling of nonlinear systems.

Key words: magnetic levitation systems, model-based predictive control, RBF-ARX model, Structured Nonlinear Parameter Optimization Method(SNPOM)