Creating models that are usable for fault diagnosis is hard. This is especially true for cyber-physical systems that are subject to architectural changes and may need to be adapted to different product variants intermittently. We therefore can no longer rely on expert-defined and static models for many systems. Instead, models need to be created more cheaply and need to adapt to different circumstances. In this article we present a novel approach to create physical models for process industry systems using multi-modal large language models (i.e ChatGPT). We present a five-step prompting approach that uses a piping and instrumentation diagram (P&ID) and natural language prompts as its input. We show that we are able to generate physical models of three systems of a well-known benchmark. We further show that we are able to diagnose faults for all of these systems by using the Fault Diagnosis Toolbox. We found that while multi-modal large language models (MLLMs) are a promising method for automated model creation, they have significant drawbacks.
@InProceedings{merkelbach_et_al:OASIcs.DX.2024.31, author = {Merkelbach, Silke and Diedrich, Alexander and Sztyber-Betley, Anna and Trav\'{e}-Massuy\`{e}s, Louise and Chanthery, Elodie and Niggemann, Oliver and Dumitrescu, Roman}, title = {{Using Multi-Modal LLMs to Create Models for Fault Diagnosis}}, booktitle = {35th International Conference on Principles of Diagnosis and Resilient Systems (DX 2024)}, pages = {31:1--31:15}, series = {Open Access Series in Informatics (OASIcs)}, ISBN = {978-3-95977-356-0}, ISSN = {2190-6807}, year = {2024}, volume = {125}, editor = {Pill, Ingo and Natan, Avraham and Wotawa, Franz}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.DX.2024.31}, URN = {urn:nbn:de:0030-drops-221236}, doi = {10.4230/OASIcs.DX.2024.31}, annote = {Keywords: Fault Diagnosis, Large Language Models, LLMs, Physical Modelling, Process Industry, P\&IDs} }
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