Abstract
Since tension and looper control is the key to successful operations in the hot strip finishing mill, several advanced control scheme have been developed by applying model-based approaches. Accurate tension models are essential to design the controllers, but the models include unmeasurable parameters. This paper presents a novel estimation scheme for these parameters. The scheme, based on the recursive least-squares method, utilizes tension deviations caused by roll eccentricity for estimation and requires no other signals for excitation of the system, which makes it very practical. Simulation and experimental results are presented to demonstrate the performance of the scheme.
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