Novel dynamic evidential Petri net for system reliability analysis

Peng, Wensheng; Zhang, Jianguo; Zhang, Jinyang

doi:10.21629/jsee.2017.05.20

Cited by 2 publications

(1 citation statement)

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“…Wang et al [23] proposed a tunnel reliability analysis method combining adaptive radial basis function element modeling technology with first-order reliability method, which improves the accuracy of the model and provides an efficient reliability analysis method for tunnel engineering problems. Peng et al [24] proposed a new dynamic Petri net model based on Dempster-Shafer evidence theory. By improving the artificial bee colony algorithm and Dempster-Shafer evidence theory, the accuracy of the evidence Petri net model in knowledge reasoning and reliability analysis of complex mechanical systems was improved.…”

Section: Introductionmentioning

confidence: 99%

Reliability evaluation of electromechanical braking system of mine hoist based on fault tree analysis and Bayesian network

Jin

Wang

et al. 2023

Mechanics & Industry

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Electromechanical braking system is the key way to improve the braking response ability of mine hoist. At present, the reliability research of electromechanical braking system is less. In order to further analyze and improve the reliability of electro-mechanical braking system, this paper adopts the reliability analysis method of electro-mechanical braking system based on fault tree and Bayesian network. Firstly, the fault tree of the electro-mechanical braking system is established, and then the fault tree is transformed into a Bayesian network, and the posterior probability, probability importance and key importance of each root node are inversely deduced. The diagnosis results show that the ball screw is the weakest link of the electro-mechanical braking system. Then the static simulation and fatigue life simulation of the ball screw are carried out for optimization, and the optimal model of the ball screw is determined. Finally, the electro-mechanical brake installed with the optimized ball screw is tested and analyzed. After the reliable performance test of the electro-mechanical brake, it is finally determined that the braking effect of the optimized electro-mechanical brake is stable.

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Section: Introductionmentioning

confidence: 99%