Fault-tolerant control of discrete event systems
Kontaktperson: Melanie Schuh
Zeitraum: seit 01.10.2011
Beschreibung: In fault-tolerant control, an occurring fault has first to be detected and then to be identified, before further actions can be undertaken. During the identification process, the nature and effects of the fault are determined. Active fault diagnosis means that as long as no fault occurs, the controller produces input sequences for the plant. If a fault is detected by the diagnosing unit, the controller is cut off and henceforth the diagnosing unit generates the input sequences for the plant. From the output of the plant, knowledge about the occurred fault is deduced. As soon as the fault is identified, notice about it is sent to the reconfiguration unit which uses this information to modify the controller. By this, it is intended to maintain the functionality of the closed loop, even though the plant is faulty.