CN102592052B - 一种航空驱动电路模块贮存动态可靠度计算方法 - Google Patents
一种航空驱动电路模块贮存动态可靠度计算方法 Download PDFInfo
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型号规格 | 工艺 | 封装形式 | 封装材料 | 管脚数 |
54LS259 | 双极型 | 双列直插 | 陶瓷 | 16 |
形状参数 | 金 | 铝 | 金铝合金 |
β | 4 | 3 | 2.2 |
χ2 | 根据失效数与置信区间计算出来的卡方分布 |
n | 加速试验样本量 |
ta | 加速试验截止时间 |
Af | 由测试到使用条件的加速因子 |
λ | 指数分布特征参数,失效率 |
β | 形状参数 |
η | 尺度参数 |
T | 温度 |
C,K,B | 常数 |
t | 时间 |
γ | 单侧置信度 |
Ea | 激活能 |
fρ(t) | 某一时间段失效概率密度 |
f(t) | 整个寿命期失效概率密度 |
ΔT | 温差 |
F(t) | 失效概率 |
ai | 每个分布的频数比 |
RL(t) | 单侧置信度为γ下的可靠度 |
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