Adaptive control for the head-end strip gauge using recursive least squares at hot strip mill

Ohta, Toshio; Washikita, Yoshiro

doi:10.1109/cacsd-cca-isic.2006.4776919

Cited by 2 publications

(1 citation statement)

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“…It was experienced that, looper and tension control is the key to the strip dimensional quality and successful mill operation. For the last three decades, many control schemes have been proposed in the gauge-looper system: conventional PID (Proportional Integral Derivative), H∞, decoupling, ILQ (Inverse Linear Quadratic) for looper and tension control [3,4] and conventional PI (Proportional Integral), adaptive, H∞, robust multivariable for AGC [5,6]. Conventionally, loopertension system and AGC system are controlled independently which ignores the mutual interactions among them.…”

Section: Introductionmentioning

confidence: 99%

Discrete-time Explicit Model Predictive Control for Gauge-Looper Integrated System in Hot Strip Finishing Mill

Zhong¹,

Zheng²,

Qi³

2014

TOAUTOCJ

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The development of an innovative discrete-time EMPC (Explicit Model Predictive Control) strategy based on multi-parametric quadratic program is traced for the gauge-looper integrated control in HSFM (Hot Strip Finishing Mill). Controller design is based on the linearized model of the integration of downstream AGC (Automatic Gauge Control) system and upstream looper-tension system. The proposed EMPC strategy gives an explicit piecewise affine control law which greatly reduces the on-line computational burden. Discrete-time EMPC achieves better performance by coordination control and is more suitable for implementation on PLC (Programmable Logic Controller) compared with conventional controllers. Experiment results verify the effectiveness of the proposed strategy.

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