Reliability analysis of braking system of hoister considering relevance

Reliability function model of braking system of hoister was analyzed taking braking force failure as specific study object. Fault chain of the braking force failure was obtained by correlation analysis, and total failure rate considering relevance was calculated combined with independent failure rate and correlation coefficient. Time interval distributions of braking force failure in two cases of considering relevance and not considering relevance were analyzed, and linear fitting results show that the time interval distribution of braking force failure considering relevance is more consistent with Weibull distribution model. The experimental results show that the error range of theoretical and practical values of failure rate is 1.33%~3.25%, which verifies correctness of the reliability function model.