Dual Mode NMPC for Regulating the Concentration of Exothermic Reactor under Parametric Uncertainties

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This paper addresses the implementation of a dual mode nonlinear model predictive control strategy integrating a nonlinear model predictive control (NMPC) with a local linear control method to control the product concentration in a continuous stirred tank reactor (CSTR), where a single exothermic reaction is carried out. For safe reactor operation, a reactor temperature path constraint is also considered in the NMPC formulation. Two well-developed linear controllers: state feedback linearizing control (SFC) and proportional-integral-derivative control (PID) technique are studied within the dual mode control framework. An Extended Kalman Filter (EKF) is incorporated into the dual mode NMPC to on-line estimate the unmeasured concentration of substances in the CSTR as well as uncertain key model parameters using an available temperature measurement. It has been found via simulation studies that the proposed dual mode NMPC, using either SFC or PID controller, connected with the EKF provides satisfactory control performance for set point tracking problem. The robustness of the controller in the presence of parametric uncertainties is also enhanced by the inclusion of the EKF. Moreover, the on-line computational time required by the dual mode NMPC is substantially decreased compared to that of an original NMPC.

収録刊行物

  • Journal of chemical engineering of Japan

    Journal of chemical engineering of Japan 37(6), 698-710, 2004-06-01

    公益社団法人 化学工学会

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各種コード

  • NII論文ID(NAID)
    10013340642
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00219592
  • NDL 記事登録ID
    6981506
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z53-R395
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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