Unsupervised Fault Detection in a Controlled Conical Tank

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Published Nov 5, 2024
Joaquín Ortega Camilo Ramírez
Tomás Rojas
Ferhat Tamssaouet
Marcos Orchard
Jorge Silva

Abstract

Current trends in the Industrial Internet of Things (IIoT) have increased the sensorization of systems, thus increasing data availability to apply data-driven fault detection and diagnosis techniques to monitor these systems. In this work, we show the capabilities of an information-driven method for detecting and quantifying faults in a subsystem common among a broad range of industries: the conical tank. Our main experiment consists of using a simple black-box model (multi-layer perceptron -- MLP) to capture the dynamics of a PID-controlled conical tank built in Simulink and then induce pump failures of different severities; the derived data-driven indicators that we developed increase with the severity of the fault validating its usefulness in this controlled setting. A complementary experiment is carried out to enrich our analysis; this consists of simulating an open-loop discrete-time version of the conical tank to explore a range of fault severity and analyze the distribution of the indicators across this range. All our results show the applicability of the data-driven fault monitoring method in conical tanks subjected to either open- or closed-loop operation.

How to Cite

Ortega, J., Ramírez, C., Rojas, T., Tamssaouet, F., Orchard, M., & Silva, J. (2024). Unsupervised Fault Detection in a Controlled Conical Tank. Annual Conference of the PHM Society, 16(1). https://doi.org/10.36001/phmconf.2024.v16i1.4137
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