基于液体火箭发动机的寿命服从威布尔分布的条件,假定天地试验环境下威布尔分布的形状参数不变,运用Bayes方法对weibull分布天地实验条件下的环境因子进行分析,给出了环境因子在平方损失下的Bayes估计,并与极大似然估计法进行比较,通过仿真实例验证了该方法的有效性。
Based on the condition that the liquid rocket is distributed as weibull distribution, assuming the shape parameter of weibull distribution is invariant in ground and flight test environment, use the Bayesian method to study the environmental factor under the weibull distribution and obtain the Bayesian estimation of the environmental factor in the square loss function. Finally, an illustrative example is compared with the maximum likelihood estimation. Simulation proves the validity of this method.