Towards the fault-tolerant advanced control of a cement plant

Presents the hierarchical structure of an integrated control and management system for industrial applications. Its main levels are: distributed process control, process operations support and plant management. This structure has been specialized in the case of a cement plant. The architecture of a gracefully degrading advanced control station is given which supports the process operations in the case of medium size applications, such as cement factories. Result of the global and local repair actions, effect of the spare processing elements and influence of different types of faults have been emphasized. The main advantages of the presented advanced control station are that only the redundancy manager and the application software have been especially designed. This has led to a low cost implementation of the station. A high performability is reached over a large time-performance domain. It can be further increased by means of repair actions and spare processing elements