在具有随机移走的逐步增加Ⅱ型截尾试验模型下,利用极大似然和Bayes方法分别给出了某航天器电源系统部件的参数和可靠性估计,并利用Tierney and Kadane近似和Gibbs抽样算法解决了Bayes估计中高维积分的计算问题。最后通过仿真实例对某航天器电源系统进行可靠性评估,并将各估计结果进行比较,验证了本文估计方法的可行性和有效性。 Under the step-by-step Type II censoring model with random removal, the parameters and reliability estimation of the components of a spacecraft power system are given by using maximum likelihood and Bayes methods. The Tierney and Kadane approximation and Gibbs sampling The algorithm solves the problem of calculating high-dimensional integrals in Bayesian estimation. Finally, a simulation example is used to evaluate the reliability of a spacecraft power system. The results of each estimation are compared to verify the feasibility and effectiveness of the proposed method.