Fault detection isolation and recovery design for an experimental hot rolling mill

The main contribution of the paper concerns the design of a fault detection isolation and recovery system, also called an Active Fault Tolerant Control System, which maintains performance close to the desired one in the presence of component and/or instrument faults. In this work, an Active Fault Tolerant Control System, dedicated to the speed control of a hot roughing rolling mill which might be affected by instrument faults, is developed in order to preserve both the quality of the product and the stability of the closed loop. The effectiveness and performance of the method are illustrated over a practical experiment using the Sheffield Hille-mill as well as via a wide range of simulations.