为保证COTS(Commercial off-the-shelf)器件成功应用于我国高可靠的航天产品中,本文总结分析了国内外空间应用COTS器件的发展情况,提出了空间应用CGIS器件的可靠性保证总体思路.该思路特点是首先进行与任务剖面相结合的可靠性评估试验,再对COTS器件进行可靠性筛选.对于热环境的可靠性保证,通过研究NASA的筛选规定,提出了不同任务要求下的老练温度.老练时间的对应关系式;实例表明温度可靠性评估试验方法能够指导工程.对于电离总剂量的可靠性保证,提出了不同任务条件下的回归筛选模型,并进行了验证,相对误差为1%.结果表明本文能够系统性地指导空间工程应用COTS器件.%For successful application of COTS (Commercial off-the-shelf) components in high reliable space systems, the history of COTS used in space systems was inducted and the general route was investigated. Traits of the route were COTS'reliability screening and COTS' reliability evaluation test ahead of the screening, and the relationship between reliability technologies and mission profile. A formulate of burn-in temperature and time adapted to different reliability requirements was researched according to NASA's rules. Regression models adapted to different missions were investigated and verified. Cases indicated that the method of thermal reliability evaluation test is useful in engineering and the total-ionizing-dose reliability screening model's relative error is 1% .The systemic method of COTS applied in space items is significant and certificated by engineering practices.
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