MULTIPLE FAULT DIAGNOSIS SYSTEM DESIGN USING RELIABILITY ANALYSIS: APPLICATION TO BARCELONA RAIN-GAUGE NETWORK

Abstract This paper discusses the problem of designing a fault diagnosis system to be able to deal with multiple sequential fault occurrence using reliability analysis techniques. In complex systems with thousands of components this type of fault is very common since the continuous operation of the systems/processes is required. Then, a fault diagnosis algorithm should cope with multiple sequential faults, but degradation in its fault isolation capabilities is introduced until the point that they should be stopped because of the loss of isolability. Finally, an example based on the rain-gauge sensor network of the Barcelona sewer system will be used to illustrate how a proposed fault diagnosis system design algorithm behaves under multiple sequential fault occurrences.