Dynamic reliability evaluation method for coupling errors in a central trough of a scraper conveyor

摘要

The present invention discloses a dynamic reliability evaluation method for coupling failures of a center trough of a scraper conveyor. Approximation accuracy of a moment-based saddle point approximation method and a functional attribute of dynamic t-copula are fully utilized, and the dynamic reliability evaluation method for the coupling failure of the middle trough of the scraper conveyor is provided such that dynamic correlation between failure modes of the middle trough of the scraper conveyor under a small sample condition is described in more detail and an accuracy of the dynamic reliability evaluation of the coupling errors of the middle trough of the scraper conveyor is improved.