Reliability Estimation of Retraction Mechanism Kinematic Accuracy under Small Sample

• Autorzy: Yan Yumeng , Zhou Jiyuan , Yin Yin , Nie Hong , Wei Xiaohui , Liang Taotao

Identyfikatory

DOI

10.17531/ein/174777

• Języki publikacji: EN

Abstrakty

EN

Due to intricate operating conditions, including structural clearances and assembly deviations, the acquisition of test data for the landing gear retraction mechanism is limited, posing challenges for reliability analysis. To solve the problem, a Bayesian-based reliability analysis methodfusing prior and test data is proposed, focusing on the mechanism kinematic accuracy under small-sample conditions. Firstly, a dynamic simulation model is established to collect prior data, and retraction tests are conducted to obtain test data. Then, based on Bayesian theory, the motion accuracy parameter estimation model integrating prior and test samples is established. To obtain accurate hyper parameters, the prior samples are expanded using the neural network. Finally, taking the retraction mechanism as the research object, the kinematic accuracy reliability is quantified, and the impact of uncertainty factors is analysed in depth. The results show that the proposed method is superior to the classical interval estimation method in stability and effectively mitigates the impact of uncertainty factors.

Słowa kluczowe

EN

Bayesian; small sample; retraction mechanism; kinematic reliability; hyper parameter estimation

• Wydawca: Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne
• Czasopismo: Eksploatacja i Niezawodność
• Rocznik: 2024
• Tom: Vol. 26, no. 1
• Strony: art. no. 174777
• Opis fizyczny: Bibliogr. 30 poz., rys., tab., wykr.

Twórcy

autor

Yan Yumeng

• State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, China

• https://orcid.org/0009-0004-0341-3158

autor

Zhou Jiyuan

• State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, China

• https://orcid.org/0009-0009-0144-6219

autor

Yin Yin

• State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, China

• https://orcid.org/0009-0004-0752-3039

autor

Nie Hong

• State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, China

autor

Wei Xiaohui

• State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, China

autor

Liang Taotao

• Nanjing University of Aeronautics and Astronautics, College of General Aviation and Flight, China

• https://orcid.org/0000-0001-5355-0856

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