Identification of countercurrent rare earth extraction process based on local linear weighted state-space models

  • Authors:

  • Lusheng Zhong;Hui Yang;Rongxiu Lu;Baohua Sun;Shasha Meng

  • Affiliations:

  • College of Electrical and Electronic Engineering, East China Jiaotong University, Nanchang, Jiangxi;College of Electrical and Electronic Engineering, East China Jiaotong University, Nanchang, Jiangxi;College of Electrical and Electronic Engineering, East China Jiaotong University, Nanchang, Jiangxi;College of Electrical and Electronic Engineering, East China Jiaotong University, Nanchang, Jiangxi;College of Electrical and Electronic Engineering, East China Jiaotong University, Nanchang, Jiangxi

  • Venue:
  • CCDC'09 Proceedings of the 21st annual international conference on Chinese control and decision conference
  • Year:
  • 2009

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Abstract

The identification problem of rare earth extraction process, which is based on local linear weighted state-space models, is considered in this paper. The parameter is determined by the optimization of output error cost function. In addition, the nonuniqueness of the fully parameterized state-space is considered and the parameter update is restricted to the direction that change the input-output behavior of the system by orthogonal gradient search. Finally, real industrial experiment of rare earth extraction is implemented and the results show the efficiency of the proposed method.