Data-Driven Robot Fault Detection and Diagnosis Using Generative Models: A Modified SFDD Algorithm
| Autor: | Mitrevski, Alex, Plöger, Paul G. |
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| Rok vydání: | 2023 |
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| Druh dokumentu: | Working Paper |
| Popis: | This paper presents a modification of the data-driven sensor-based fault detection and diagnosis (SFDD) algorithm for online robot monitoring. Our version of the algorithm uses a collection of generative models, in particular restricted Boltzmann machines, each of which represents the distribution of sliding window correlations between a pair of correlated measurements. We use such models in a residual generation scheme, where high residuals generate conflict sets that are then used in a subsequent diagnosis step. As a proof of concept, the framework is evaluated on a mobile logistics robot for the problem of recognising disconnected wheels, such that the evaluation demonstrates the feasibility of the framework (on the faulty data set, the models obtained 88.6% precision and 75.6% recall rates), but also shows that the monitoring results are influenced by the choice of distribution model and the model parameters as a whole. Comment: Presented at the 30th International Workshop on Principles of Diagnosis (DX), 2019 |
| Databáze: | arXiv |
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