Rolling bearing friction torque sequence features and their status

Rolling bearing friction torque temporal characteristics: according to the type ( 5 - 10) And type ( 5 - 11) Z, statistics: 2048 Z = Z; = 1014 I = 1, the sample size is larger, can assume rolling bearing friction torque approximately obey the normal distribution, so that C is c_N_ Jacqueline Nottingham type, N = 2048, a = 0. 01. The calculation results for C = - 949. 3206. In figure 5 - Overall comparative data for N = 1, 2048, under the condition of the confidence level of 99%, 1, 2 set of bearing friction torque has a significant difference between values for C = 949. Z = 1014, 3206, the calculation results, the Z = 1014 & gt; C - 949. 3206. This shows that under the condition of the confidence level of 99%, 1 set of bearing temporal characteristics of slightly in the second set of bearing temporal characteristics, but there was no significant difference. Can know from rolling bearing time series analysis method, this method weakens the effect of numerical remote, but ignores the data arrangement affect the results. For rolling bearing demanding, need an analysis of the state of rolling bearing friction torque. State of rolling bearing friction torque characteristics: according to the type ( 5 - 14) , type ( 5 - 15) And type ( 5 - 16) 2048 r (, X) = 2 R( x( n) ) = 4179099=2048R( X,) = SR( x2( n) ) = 4211557 n = lR = 0。 429 in order to more clearly the analysis of the status of 1, 2 sets of bearings, will rank and results in figure 5 - 2. By the normal distribution and the sample size of 2048. The significance level a = 0. 01, the critical value of R is 330. This is R value is less than the critical value: according to rank and determination methods, shows that under the condition of the confidence level of 9%, 1 set of bearing friction torque state characteristic and the second set of bearing friction torque characteristics there was no statistically significant difference in the comprehensive sequencing; According to the figure 5 - at the same time 2 in 1 set of bearing and 2 sets of bearing friction torque rank and contrast, it can be seen that 2 sets of bearing friction torque data permutation order lag behind the order of 1 set of bearing, but not significantly; State that 1 set of bearing friction torque characteristics were slightly better than the second set of state of friction torque characteristics of bearings.