Modelling for Control of a Steckel Hot Rolling Mill.

DOI Web Site 被引用文献3件 参考文献23件
  • Scholtz E.
    Department of Electrical and Electronic Engineering, University of Pretoria
  • Craig I. K.
    Department of Electrical and Electronic Engineering, University of Pretoria
  • Pistorius P. C.
    Department of Materials Science and Metallurgical Engineering, University of Pretoria

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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.

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