Abstract
Systems experiencing high-rate dynamic events, termed high-rate systems, typically undergo accelerations of amplitudes higher than 100 g in less than 10 ms. Examples include adaptive airbag deployment systems, hypersonic vehicles, and active blast mitigation systems. Given the critical functions of such systems, accurate and fast modeling tools are necessary for ensuring the target performance. However, the unique characteristics of these systems, which consist of (1) large uncertainties in the external loads, (2) high levels of nonstationarities and heavy disturbances, and (3) unmodeled dynamics generated from changes in system configurations, in combination with the fast-changing environment, limit the applicability of physical modeling tools. In this chapter, a neural network-based approach is proposed to model and predict high-rate systems. It consists of an ensemble of recurrent neural networks (RNNs) with short-sequence long short-term memory (LSTM) cells which are concurrently trained. To empower multi-step-ahead predictions, the input space for each RNN is selected individually using principal component analysis that extracts different resolutions on the dynamics. The proposed algorithm is validated on experimental data obtained from a high-rate system. Results showed that this algorithm significantly improves the quality of step-ahead predictions over a heuristic approach in constructing the input spaces.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Hong, J., Laflamme, S., Dodson, J., Joyce, B.: Introduction to state estimation of high-rate system dynamics. Sensors 18(2), 217 (2018)
Joyce, B., Dodson, J., Hong, J., Laflamme, S.: Practical considerations for sliding mode observers for high-rate structural health monitoring. In: ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, New York (2018)
Downey, A., Hong, J., Dodson, J., Carroll, M., Scheppegrell, J.: Millisecond model updating for structures experiencing unmodeled high-rate dynamic events. Mech. Syst. Signal Process. 138, 106551 (2020)
Hong, J., Laflamme, S., Cao, L., Dodson, J., Joyce, B.: Variable input observer for nonstationary high-rate dynamic systems. Neural Comput. Appl. 32(9), 5015–5026 (2018)
Barzegar, V., Laflamme, S., Hu, C., Dodson, J.: Multi-time resolution ensemble lstms for enhanced feature extraction in high-rate time series. Sensors. 21(6), 1954 (2021)
Kim, K., Kim, J., Rinaldo, A.: Time series featurization via topological data analysis (2018). Preprint, arXiv:1812.02987
Belghazi, M.I., Baratin, A., Rajeshwar, S., Ozair, S., Bengio, Y., Courville, A., Hjelm, D.: Mutual information neural estimation. In: International Conference on Machine Learning, pp. 531–540 (2018)
Laflamme, S., Slotine, J.J.E., Connor, J.J.: Self-organizing input space for control of structures. Smart Mater. Struct. 21(11), 115015 (2012)
Acknowledgements
The work presented in this chapter is funded by the National Science Foundation under award number CISE-1937460. Their support is gratefully acknowledged. Any opinions, findings, and conclusions or recommendations expressed in this work are those of the authors and do not necessarily reflect the views of the sponsor. The authors also acknowledge Dr. Janet Wolfson and Dr. Jonathan Hong for providing the experimental data.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2022 The Society for Experimental Mechanics, Inc
About this paper
Cite this paper
Barzegar, V., Laflamme, S., Hu, C., Dodson, J. (2022). Ensemble of Multi-time Resolution Recurrent Neural Networks for Enhanced Feature Extraction in High-Rate Time Series. In: Kerschen, G., Brake, M.R., Renson, L. (eds) Nonlinear Structures & Systems, Volume 1. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-030-77135-5_24
Download citation
DOI: https://doi.org/10.1007/978-3-030-77135-5_24
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-77134-8
Online ISBN: 978-3-030-77135-5
eBook Packages: EngineeringEngineering (R0)