期刊文献+

模型结构分析方法在多变量预测控制中的应用

Model structure analysis in the application of multivariable predictive control
下载PDF
导出
摘要 为了解决因在模型辨识阶段产生辨识误差而可能引起的稳态增益模型出现线性相关度增高的问题,研究了模型结构临界不稳定现象与多变量预测控制系统性能间的关系.首先,利用奇异值分解(SVD)和相对增益矩阵(RGA)等工具分析了稳态模型的线性相关度,从而给出了模型结构临界不稳定的判定方法.其次,给出了由建模误差引起的模型结构临界不稳定问题或过程控制系统设计与装置存在的不匹配问题时的控制系统改进方法,并通过仿真对比验证了模型结构对控制性能的影响及改进方法的有效性. In order to solve the problem that identification error emerged in the model identification stage may cause the dependence of the steady state model higher, the relationship between the critical instability of the model structure and the performance of the multi-variable predictive control is investigated. First, the singular value decomposition (SVD) and the relative gain array (RGA) are used to analyze the linear dependence of the model structure and then the judgment method of critical instability of the model structure is given. Secondly, the improved method of the control system is given when there is critical instability of the model structure caused by identification error and mismatch between process control system design and equipment. Simulation results validate the influence of the model structure on the control performance and the effectiveness of the improved method.
出处 《东南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2011年第B09期43-48,共6页 Journal of Southeast University:Natural Science Edition
基金 国家自然科学基金资助项目(61074059) 国家高技术研究发展计划(863计划)资助项目(2009AA04Z138) 浙江大学工业技术国家重点实验室开放课题资助项目(ICT1116) 浙江省科技厅2011年公益项目资助项目
关键词 预测控制 模型结构 奇异值分解 条件数 相对增益矩阵 predictive control model structure singular value decomposition condition number relative gain array
  • 相关文献

参考文献11

  • 1C.Kwok,O.Etzioni,and D.S.Weld.Scaling Question Answering to the Web [A].In:Proceedings of the 10th World Wide Web Conference (WWW2001)[C],Hong Kong,2001,150-161.
  • 2Dell Zhang,Wee Sun Lee.A Web-based Question Answering System[A].In:Proceedings of the SMA Annual Symposium 2003 [C],NUS,Singapore,Jan 2003.
  • 3崔桓 蔡东风 苗雪雷.问答系统中疑问句理解的分析研究[A]..中国人工智能进展[C].北京邮电大学出版社,2003,11.1023-1027.
  • 4S.Dumais,M.Banko,E.Brill,J.Lin and A.Ng.Web Question Answering:Is More Always Better? [A].In:proceedings of SIGIR02 [C],Aug 2002,291-298.
  • 5Long Hao,Cai Dongfeng.A Word-maching-based Method of Computing the Degree of Similarity Between Sentences[A].Advance in Computation of Oriental Languages.20th International Conference on Computer Processing of Oriental Languages Shenyang [C],China,August
  • 6Steven J L. Linear algebra with applications [ M ]. 7th ed. London: Prentice Hall, 2005.
  • 7Fang Q. A note on the condition number of a matrix [ J]. Journal of Computational and Applied Mathematics, 2003, 157(1) : 231 -234.
  • 8Aguiar P M Q, Stosi'c M, Xavier J. On singular values of partially prescribed matrices [ J ]. Linear Algebra and its Applications, 2008, 429 ( 8/9 ) :2136 - 2145.
  • 9Li Z C, Chien C S, Huang H T. Effective condition number for finite difference method [ J ]. Journal of Computational and Applied Mathematics, 2007, 198 ( 1 ) : 208 - 235.
  • 10Loquasto F, Seborg D E. Model predictive controller monitoring based on pattern classification and PCA [C]//Proceedings of American Control Conference. Denver, CO, USA, 2003, 3 : 1968 - 1973.

共引文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部