Bayesian Framework Approach for Prognostic Studies in Electrolytic Capacitor under Thermal Overstress Conditions

Description

Electrolytic capacitors are used in several applications rang- ing from power supplies for safety critical avionics equipment to power drivers for electro-mechanical actuators. Past expe- riences show that capacitors tend to degrade and fail faster when subjected to high electrical or thermal stress condi- tions during operations. This makes them good candidates for prognostics and health management. Model-based prognos- tics captures system knowledge in the form of physics-based models of components in order to obtain accurate predictions of end of life based on their current state of health and their anticipated future use and operational conditions. The focus of this paper is on deriving first principles degradation mod- els for thermal stress conditions and implementing Bayesian framework for making remaining useful life predictions. Data collected from simultaneous experiments are used to validate the models. Our overall goal is to derive accurate models of capacitor degradation, and use them to remaining useful life in DC-DC converters.

Resources

Name Format Description Link
33 2012_PHM_Capacitor.pdf https://c3.nasa.gov/dashlink/static/media/publication/2012_PHM_Capacitor.pdf
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FGPMGV%2FGCPEX%2FGAUGES%2FDATA101
21 Files may be downloaded directly to your workstation from this link https://search.earthdata.nasa.gov/search?q=gpmprecipmgcpex
21 GCPEx Field Campaign Collection DOI http://dx.doi.org/10.5067/GPMGV/GCPEX/DATA101
21 The guide document contains detailed information about the dataset http://ghrc.nsstc.nasa.gov/uso/ds_docs/gpmgv/gcpex/gpmprecipmgcpex/gpmprecipmgcpex_dataset.html
21 The home page for the project or program which sponsored the dataset https://ghrc.nsstc.nasa.gov/home/field-campaigns/GCPEx
21 Lake Effect Snow Micro Article https://ghrc.nsstc.nasa.gov/home/micro-articles/lake-effect-snow
21 Instructions for citing GHRC data https://ghrc.nsstc.nasa.gov/home/about-ghrc/citing-ghrc-daac-data
33 2012_PHM_Capacitor.pdf https://c3.nasa.gov/dashlink/static/media/publication/2012_PHM_Capacitor.pdf

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  • dashlink
  • nasa
  • ames

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