Community Research and Development Information Service - CORDIS


Final report on Contract No 7210-PR/032, 01/07/1997 to 31/12/2000

The standard of hot strip coiling quality is still a problem within strip production. A major factor is that conventional coiler control pays only limited respect to the disturbing influences and to the multivariable nature of the coiling process. Therefore the project has been focused on:
- The provision of more accurate data on the speed and location of the strip approaching the coiler.
- The improvement of conventional controlling strategies using improved models of the coiling process.
- The development of advanced controlling strategies using controllers based on dynamic multivariable models.
- The feedback of the achieved coil profile data.

An expert system has been developed to link the coiling defects to their causes in order to optimise the coiler performance. Based on comprehensive models of the coiling process and its influences on the coiling quality, conventional coiler controllers have been upgraded and a multivariable coiler controller has been developed. The improvements of conventional coiler controller's cover:
- The tension control by control of the run-out-table rolls.
- The tuning of coiler operation control sequences.

The core elements of the developed multivariable coiler controller are:
- The strip by the tilting of the pinch roll with respect to it.
- The actual strip tension.

For diagnosis of coiling defects an expert system has been inserted into the hot strip mill process control system architecture and integrated with the current diagnostic systems dedicated to rolling process and electromechanical/hydraulic components.

Additional information

Authors: MÜLLER U, BFI, Düsseldorf (DE);WOLFF A, BFI, Düsseldorf (DE);PARKER D J, Corus, Port Talbot (GB);SANFILIPPO F, CSM, Rome (IT);MORETTO C, IRSID, Maizières-lès-Metz (FR);MULLER U, BFI, Dusseldorf (DE)
Bibliographic Reference: EUR 20212 EN (2002), pp.170. Euro: 25.00
Availability: EUR-OP reference: KI-NA-20212-EN-S Available from EUR-OP sales agents. URL:
ISBN: ISBN: 92-894-3248-9
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