Fraunhofer Institute for High Frequency Physics and Radar Techniques FHRSteel production imposes high demands on the precision, efficiency, and robustness of the measurement technology employed. In particular, extreme environmental conditions in hot rolling mills significantly limit the applicability of conventional measurement methods such as optical or radiometric systems.
Within the ASRA project, a novel radar-based system is being developed for high-precision contour measurement of rolled material edges in hot rolling processes. The objective is to enable stable and accurate width measurement over the entire length of the strip—even in the presence of varying edge geometries or so-called ski formation, where the leading edge of the material curls upward.
By combining contour measurement, velocity estimation, and detection of the strip head and tail, an adaptive real-time control of the rolling stands in the roughing mill is to be realized. This approach allows the width control system to be dynamically adjusted to current material parameters. As a result, the proportion of material falling below the target width and requiring removal is reduced, leading to energy and cost savings as well as a significant decrease in scrap.
The project involves the development of a high-resolution, modular, and fully integrated multi-channel radar system. In addition, specialized radar signal processing techniques are employed, implemented in real time on high-performance hardware. The system solution is designed for use under industrial conditions and ensures robust and reliable measurements within the rolling process.
ASRA brings together expertise in radar development, signal processing, antenna design, rolling process modeling, and industrial integration. Through the involvement of industrial partners, the developed technology can be tested in realistic environments from an early stage and prepared for industrial deployment.
Project Partners and Funding
