Design and performance of a monitoring system for a hydraulic screw-down device

This article presents the design for a Fault Detection and Isolation system applied to the actuator consisting in a hydraulic screw-down device used for automated running of rolling mill stands in the iron and steelmaking industry. The actuator is first described and specifications for the monitoring are proposed. The principles of the design are developed giving the main parameters to adjust with the actual process. The compared performances, obtained by simulation, in a specific industrial environment are finally presented.