电子元件与材料
電子元件與材料
전자원건여재료
ELECTRONIC COMPONENTS & MATERIALS
2015年
3期
77-80
,共4页
功率器件%正态分布统计%功率循环试验%Coffin-Manson模型%寿命模型%预测
功率器件%正態分佈統計%功率循環試驗%Coffin-Manson模型%壽命模型%預測
공솔기건%정태분포통계%공솔순배시험%Coffin-Manson모형%수명모형%예측
power device%normal distribution statistics%power cycling test%Coffin-Manson model%lifetime model%predicting
分析了功率器件寿命预测研究现状，并通过恒定应力加速寿命试验来提取器件失效参数，利用正态分布统计方法提取Coffin-Manson寿命预测模型参数建立功率器件寿命预测模型并进行分析。结果表明，模型参数拟合值和实测值的相关系数均在96.8%以上，试验结果满足正态分布统计，说明得到的模型参数是有效的。模型在ΔTj为70.5℃下仿真值与试验值的相对误差为2.768%，证明了该模型的可行性和准确性。
分析瞭功率器件壽命預測研究現狀，併通過恆定應力加速壽命試驗來提取器件失效參數，利用正態分佈統計方法提取Coffin-Manson壽命預測模型參數建立功率器件壽命預測模型併進行分析。結果錶明，模型參數擬閤值和實測值的相關繫數均在96.8%以上，試驗結果滿足正態分佈統計，說明得到的模型參數是有效的。模型在ΔTj為70.5℃下倣真值與試驗值的相對誤差為2.768%，證明瞭該模型的可行性和準確性。
분석료공솔기건수명예측연구현상，병통과항정응력가속수명시험래제취기건실효삼수，이용정태분포통계방법제취Coffin-Manson수명예측모형삼수건립공솔기건수명예측모형병진행분석。결과표명，모형삼수의합치화실측치적상관계수균재96.8%이상，시험결과만족정태분포통계，설명득도적모형삼수시유효적。모형재ΔTj위70.5℃하방진치여시험치적상대오차위2.768%，증명료해모형적가행성화준학성。
The current study situation of power device’s lifetime predicting was analyzed, and power device’s lost efficacy parameters were obtained by constant-stress accelerated life test. Coffin-Manson lifetime predicting model parameters were obtained by using statistic method of normal distribution, which were used to establish power device’s lifetime predicting model. The parameters were analyzed. Results show that the correlating coefficient of model parameter fitting values and test values is up to 96.8%, experimental results obey normal distribution statistics, which shows the model parameters are efficient. Relative error of experimental values (ΔTj=70.5 ℃) and simulating values is 2.768%. It is proved that the lifetime predicting model is feasible and accurate.
