Parameter-nonparametric fusion method was put forward to analyze the characteristic of space bearing friction moment

by using statistical method to judge the basic characteristic of space bearing friction moment; symbol judgment method was used to determine the time sequence characteristic of space bearing friction moment; while rank sum judgment method was used to determine the state characteristic of space bearing friction moment; these three methods were fused to analyze the overall characteristic of space bearing friction moment

in order to evaluate the friction characteristic of space bearing. The method can avoid the effect of the plus or minus and some mini-max values and time sequence on overall characteristic of space bearing. The basic characteristic

the time sequence characteristic and the state characteristic of space bearing were discovered to reflect the overall characteristic on space bearing; the results show that the better space bearing are determined according to working performance and stabilization of the space bearing

at the same time

on the basis of the time sequence and state characteristic of the space bearing

the optimal overall space bearing was chosen

with the credibility up to 99%

in line with the current selection of space bearings; there were more information of the space bearing with use of the fusion method

showing that the fusion method could choose the space bearing of the optimal overall characteristic from a handful of space bearings.