Reliability model based on fault energy dissipation for mechatronic system

Yajing Qiao, Shaoping Wang, Jian Shi, Di Liu and Mo Tao

Reliability Engineering and System Safety, 2024, vol. 250, issue C

Abstract: The failures of mechatronic systems, such as wear, fatigue, and aging, result in energy dissipation. This paper develops a reliability model from the perspective of fault energy dissipation for mechatronic systems. An energy port for the mechatronic component is presented, and the fault energy dissipation is calculated based on bond graph. A reliability model for mechatronic components is developed using fault dissipated energy as a pivotal parameter. By accounting for energy transfers among upstream and downstream components, a fault propagation model based on interaction equations between energy ports is studied, which allows to obtain the fault dissipated energy within the mechatronic system. Moreover, a generic method for calculating the reliability of mechatronic systems is proposed based on the total fault dissipated energy of the entire system. Considering the Electro-Hydrostatic actuator (EHA) as an example, the proposed method is compared with existing reliability models. The obtained results show that the proposed model outperforms the existing ones, and therefore it can be considered as a promising reliability evaluation method for mechatronic systems.

Keywords: Reliability model; Fault energy dissipation; Energy transfer; Fault propagation; Bond graph (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:250:y:2024:i:c:s0951832024003673

DOI: 10.1016/j.ress.2024.110295

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