Experimental Implementation and Evaluation of the RMI Failure Detection Algorithm

This paper describes laboratory experiments with the Reachable Measurement Intervals (RMI) failure detection algorithm for systems with imperfect models. It was implemented on a multiprocessor computer system and used to detect and Isolate failures in an aircraft simulator in the presence of modeling errors. The failure detection computer and the monitored system resembled a commercial system and provided a good vehicle for assessing the suitability of RMI for industrial applications. The algorithm performed very well with real hardware, matching its performance in simulations. It did so because it has been designed specifically to handle imperfect dynamic models. The algorithm is fast enough to monitor large industrial systems when implemented on a single-board computer. Its structure is suitable for parallel processing implementation which makes it fast enough for even very large systems.