Community Research and Development Information Service - CORDIS


The aim of this project was to design, construct, implement and test a flatness gauge at the exit of the Diligen hot-palte mill.

After a survey of the available technologies and to take into account the end-users specification, we decided to develop a specific gauge based on the local curvature measurement of different fibres of the plate.

A compact triple laser telemeter has been developed and five modules installed in a cabin with all the protection needed to withstand the severe environment.

Trials performed on a series of production plates and on an original test plate with machined grooves simulating shape defects demonstrate that the basic design of the gauge was good, but data-processing algorithms should be improved to reject the measurement errors due to the vibration pattern of the plate.

A new approach to improve the data processing was introduced. Advanced simulation software has been developed. It enables the testing of different sensor configurations and of different algorithms for shape reconstruction and fibre elongation. The key point is the disturbance factor simulation which is incorporated into the simulator toolbox.

This simulation package enabled us to define and optimize new algorithms which were downloaded onto the gauge and tested.

The gauge is close to specifications. But more work needs to be done to reconstruct shape, especially near the plate head and tail. d and tail.

Additional information

Authors: HARALAMB G, Dilinger Aktiengesellschaft der Dilinger Hutten werke, Dillingen (DE);TOURSCHER G, IRSID (FR)
Bibliographic Reference: EUR 19350 EN (2000), 51pp.
Availability: Available from EUR-OP Sales agents
ISBN: ISBN 92-828-9157-7
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