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Safety Assessment of Liquid Launch Vehicle Structures Based on Interpretable Belief Rule Base

Gang Xiang1,2, Xiaoyu Cheng3, Wei He3,4,*, Peng Han3

1 Beihang University School of Automation Science and Electrical Engineering, Beijing, 100083, China
2 Beijing Aerospace Automatic Control Institute, Beijing, 100070, China
3 School of Computer Science and Information Engineering, Harbin Normal University, Harbin, 150025, China
4 Rocket Force University of Engineering, Xi’an, 710025, China

* Corresponding Author: Wei He. Email: email

Computer Systems Science and Engineering 2023, 47(1), 273-298.


A liquid launch vehicle is an important carrier in aviation, and its regular operation is essential to maintain space security. In the safety assessment of fluid launch vehicle body structure, it is necessary to ensure that the assessment model can learn self-response rules from various uncertain data and not differently to provide a traceable and interpretable assessment process. Therefore, a belief rule base with interpretability (BRB-i) assessment method of liquid launch vehicle structure safety status combines data and knowledge. Moreover, an innovative whale optimization algorithm with interpretable constraints is proposed. The experiments are carried out based on the liquid launch vehicle safety experiment platform, and the information on the safety status of the liquid launch vehicle is obtained by monitoring the detection indicators under the simulation platform. The MSEs of the proposed model are 3.8000e-03, 1.3000e-03, 2.1000e-03, and 1.8936e-04 for 25%, 45%, 65%, and 84% of the training samples, respectively. It can be seen that the proposed model also shows a better ability to handle small sample data. Meanwhile, the belief distribution of the BRB-i model output has a high fitting trend with the belief distribution of the expert knowledge settings, which indicates the interpretability of the BRB-i model. Experimental results show that, compared with other methods, the BRB-i model guarantees the model’s interpretability and the high precision of experimental results.


Cite This Article

G. Xiang, X. Cheng, W. He and P. Han, "Safety assessment of liquid launch vehicle structures based on interpretable belief rule base," Computer Systems Science and Engineering, vol. 47, no.1, pp. 273–298, 2023.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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