Statistical Analysis Of Space-flight Electrical Connector For Vibration Reliability

In this dissertation, the model Yl IX ?221 electrical connector as the object, reliability test method and test data statistical analysis method of electrical has been deeply researched.First, briefly stated the reliability research developing history and current situation at home and abroad, the reliability test method and developing trends, then statistical analysis method and existing problems, and electrical connector reliability research's current situation and existing problems, iSecond, through analyzing the failure mechanism of electrical connector, and combining with the theory of probability and statistics, set up a reliability statistical model of electrical connector affected upon vibration stress, which is the Anti -power Law-Weibull Model, laid a foundation for working out electrical connector reliability test plans and treating electrical connector test data.Third, the accuracy of parameter estimate methods for the 2-parameters Weibull distribution and four different estimate methods for failure time based on the life of fixed time measurement are discussed. In the sense of mean squares, maximum likelihood estimator, best linear unbiased estimator, taest linear invariant estimator, and good linear estimator are contracted.Fourth, proposed and researched the reliability analysis method under the zero- failure data and DOOF data. Based on the part Beta distribution as the prior distribution of failure probability p, = P(T