A Tutorial for Model-based Prognostics Algorithms based on Matlab Code

Dawn An, Joo-Ho Choi, and Nam Ho Kim
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Full Paper
phmc_12_122.pdf624.2 KBSeptember 18, 2012 - 8:18pm

This paper presents a Matlab-based tutorial for model-based prognostics, which combines a physical model with observed data to identify model parameters, from which the remaining useful life (RUL) can be predicted. Among many model-based prognostics algorithms, the particle filter is used in this tutorial for parameter estimation of damage or a degradation model in model-based prognostics. The tutorial is presented using a Matlab script with 62 lines, including detailed explanations. As examples, a battery degradation model and a crack growth model are used to explain the updating process of model parameters, damage progression, and RUL prediction. In order to illustrate the results, the RUL at an arbitrary cycle are predicted in the form of distribution along with the median and 90% prediction interval.

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Submission Keywords: 
battery degradation; crack growth; Matlab code; model-based prognostics; particle filter; remaining useful life.
Submission Topic Areas: 
Model-based methods for fault detection, diagnostics, and prognosis
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