Model Based Reconfiguration to Controller Failures in Manufacturing Systems

Nowadays industrial processes demand more complex control systems that must exhibit flexibility and adaptability to changes in the environment. When the system is distributed and thus several controllers are connected by bus segments, it is not trivial to achieve dynamic reconfiguration. This paper addresses how to express controller failure tolerance by means of the design of a supervisor component that tracks continuously if the controllers are online and switch to a backup one a failure is detected. The design of the supervisor is achieved using a model based approach from which the supervisor code skeleton can be generated.