Hybrid condition monitoring of nonlinear mechatronic system using biogeography-based optimization particle filter and optimized extreme learning machine

This paper proposes a hybrid condition monitoring approach, which integrates bond graph model based diagnostic technique and data-driven remaining useful life (RUL) prediction, for a nonlinear mechatronic system. In this approach, various degrading faults can be considered and the physical degradation model is not required for RUL prediction. Firstly, an integrated fault signature matrix is proposed by the causal path of bicausal-bond graph model to improve fault isolation performance. After that, a biogeography-based optimization (BBO)-particle filter is developed for fault identification. For prognosis, an optimized extreme learning machine (OELM) is proposed where the hidden layer biases and input weights are optimized by BBO. The fault identification results provide data set to train the OELM for prognosis. Finally, the effectiveness of the approach is verified by simulation and experiment results. (c) 2021 ISA. Published by Elsevier Ltd. All rights reserved.

Automated summary

This paper proposes a hybrid condition monitoring approach that integrates bond graph model based diagnostic technique and data-driven remaining useful life (RUL) prediction for a nonlinear mechatronic system. The approach improves fault isolation performance through an integrated fault signature matrix and utilizes optimized algorithms for fault identification and prognosis. The effectiveness of the approach is verified through simulation and experiment results.