A Method of Evaluation Product Reliability in Consideration of Abnormal Data Removal
WEI Gaole
CHEN Zhijun
Abstract：A method of evaluation product reliability in consideration of abnormal data removal is proposed in accordance with the abnormal data rej ection criteria that the abnormal data caused by the test error and the sample dispersion can be removed.Firstly,the paper obtains a product life data based on extrapolating product pseudo life data by accelerating degradation test data,and the optimal distribution of the life time is determined by the distribution goodness of fit test of the lifetime data.And then,the paper estimates the parameters of the model by utilizing the least square estimation method combined with the normally used acceleration model,converts the pseudo life under the high force into a life value under normal stress level, and removes the unsocial life data according to the abnormal data elimination criteria.At last,the life dis-tribution of the product is obtained by distribution fitting of the life data,and the reliability and the relia-ble life of the product is evaluated.The applicability and the effectiveness of the proposed method are veri-fied by using a certain type of accelerometer as an example.
Keywords：abnormal datatest errordispersionleast square estimationreliabilityreliable life
Publication Date：2016-08-31
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 31-36 )