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Characterizing and Computing HBG-PCs for Hybrid Systems Fault Diagnosis

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Advances in Artificial Intelligence (CAEPIA 2015)

Part of the book series: Lecture Notes in Computer Science ((LNAI,volume 9422))

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Abstract

Possible Conflicts (PCs) are those minimally redundant subsystems, computed offline, that can be used for consistency-based diagnosis of physical systems. In this work we characterize Possible Conflicts for hybrid systems diagnosis in the Hybrid Bond Graph modelling framework, introducing the notion of HBG-PCs. We provide a method to compute the complete set of HBG-PCs before causality is assigned in the model, removing a previous assumption that the system model should have a valid causal assignment when every switching junction was set to on. We call this new concept Structural HBG-PC. We illustrate these issues with an prototypical example and discuss our contributions against other proposals in the literature.

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Notes

  1. 1.

    The Artificial Intelligence approach to model-based diagnosis it is usually knwon as DX, while the Control Theory approach to the same problem is usually known as FDI.

  2. 2.

    Exceptionally some degenerated subsystems can appear, but they had no interest for diagnosis purposes.

  3. 3.

    Otherwise there would be parts of the system that will be never used, or there is no need for such sw in the model.

  4. 4.

    It is straightforward propagating from sensor/sources an traversing non-parametric junctions.

  5. 5.

    http://www.infor.uva.es/~belar/HBGPCS_results/results.pdf has a complete description of the systems and the results.

References

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Acknowledgments

This work has been supported by Spanish MINECO under DPI2013-45414-R grant.

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Correspondence to Belarmino Pulido .

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Pulido, B., Alonso-González, C., Bregon, A., Hernández, A. (2015). Characterizing and Computing HBG-PCs for Hybrid Systems Fault Diagnosis. In: Puerta, J., et al. Advances in Artificial Intelligence. CAEPIA 2015. Lecture Notes in Computer Science(), vol 9422. Springer, Cham. https://doi.org/10.1007/978-3-319-24598-0_11

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  • DOI: https://doi.org/10.1007/978-3-319-24598-0_11

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