Nonlinear Looper-tension Control for Hot Strip Finishing Mill Using Feedback Linearization
نویسندگان
چکیده
Abstract: This paper studies on the design of a nonlinear controller for the looper-tension system in hot strip finishing mills using a static state feedback linearization and an ILQ(Inverse Linear Quadratic) Optimal Control. Nonlinear dynamic equations of the looper-tension system are analytically linearized by a static feedback linearization algorithm with a compensator. A nonlinear controller is designed from the feedback linear model, which is composed of an ILQ controller and an input transformer. It is shown from a computer simulation that the nonlinear controller has good performances throughout the full strip part including top, middle and end parts of the strip.
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