Modelling for Control of a Steckel Hot Rolling Mill

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著者

    • SCHOLTZ E.
    • Department of Electrical and Electronic Engineering, University of Pretoria
    • CRAIG I..K.
    • Department of Electrical and Electronic Engineering, University if Pretoria Department of Electrical and Electronic Engineering, University of Pretoria
    • PISTORIUS P.C.
    • Department of Materials Science and Metallurgical Engineering, University of Pretoria

抄録

In this work the derivation of a nonlinear plant simulator of a Steckel Hot Rolling Mill process is shown. The simulator reflects the thickness crown and tension behaviour of the strip, while the temperature, shape and flatness behaviour of the strip fall outside the scope of this work. Roll gap, stand, tension and hydraulic actuator models are incorporated in order to yield the simulator. The nonlinear simulator is used to identify a linear model for control system design. The linear model was identified at a certain operating point associated with a particular pass of a multiple pass rolling schedule. Step tests were applied to the manipulated variables of the simulator, and using system identification (SID) techniques a linear time invariant (LTI) multivariable input output (MIMO) transfer function model was identified. Lastly an initial control problem is formulated.

収録刊行物

  • ISIJ international  

    ISIJ international 40(10), 1003-1012, 2000-10-15 

    The Iron and Steel Institute of Japan

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