平台式惯性导航系统在线可靠性评估技术
收稿日期: 2017-03-20
修回日期: 2017-05-22
网络出版日期: 2017-06-02
基金资助
国防预研基金资助项目（41404060101）
On-line reliability assessment of platform inertial navigation system
Received date: 2017-03-20
Revised date: 2017-05-22
Online published: 2017-06-02
Supported by
National Defence Pre-research Foundation (41404060101)
平台式惯性导航系统是现代导航的重要设备，由于其所处环境和制造工艺各不相同，导致各个体之间的可靠性有着明显的差异。如果对收集到的性能误差数据进行统一处理，无法准确地反映个体之间的差异性，不利于掌握平台式惯性导航系统个体的可靠性规律。针对该问题，对平台式惯性导航系统的在线可靠性评估方法进行了重点研究。结合平台式惯性导航系统使用过程中的性能变化特点和失效机理，利用复合Poisson过程建立了其性能退化模型，并给出了性能参数评估方法。通过算例分析，说明建立的性能退化模型能够较好地描述平台式惯性导航系统的性能退化规律，有助于掌握平台式惯性导航系统的可靠性水平。
关键词： 在线可靠性; 性能退化; 复合Poisson过程; 可靠性评估; 平台式惯性导航系统
钱超 , 张子剑 , 李大伟 . 平台式惯性导航系统在线可靠性评估技术[J]. 航空学报, 2017 , 38(9) : 321259 -321259 . DOI: 10.7527/S1000-6893.2017.321159
Platform inertial navigation system is important equipment of modern navigation. Because of variable environments and different manufacture levels, there is a distinct discrepancy between individual platform inertial navigation. Analysis of the collected performance deterioration data as a whole cannot reflect the individual discrepancy. To address this problem, on-line reliability assessment of platform inertial navigation system is investigated. Using composite Poisson process, a deterioration model is established based on the deterioration characteristics and failure mechanism of the platform inertial navigation system. The method for parameter estimation is given. Computation analysis of samples shows that the model can describe the performance deterioration law of the platform inertial navigation system, and is thus helpful for knowing the reliability level of the platform inertial navigation system.
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