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Controller Structure and Performance According to Linearization Methods in the Looper ILQ Control for Hot Strip Finishing Mills
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 Title & Authors
Controller Structure and Performance According to Linearization Methods in the Looper ILQ Control for Hot Strip Finishing Mills
Park, Cheol-Jae; Hwang, I-Cheol;
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This paper studies on the relation between linearization methods and controller gains in the looper ILQ(lnverse Linear Quadratic optimal control) system for hot strip finishing mills. Firstly, two linear models arc respectively derived by a linearization method using Taylor's series expansion and a static state feedback linearization method, respectively, and the linear models are compared with the nonlinear model. Secondly, the looper servo controllers are respectively designed on the basis of two linearization models. Finally, the relation between the performances of two ILQ servo controllers and the linearization methods, and the structures and control gains of two controllers are evaluated by a computer simulation.
inverse linear quadratic optimal control;hot strip finishing mill;looper system;strip tension;looper angle;feedback linearization;Taylor's linearization;
 Cited by
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