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机械工程学报

机械工程学报 ›› 2017, Vol. 53 ›› Issue (11): 20-28.doi: 10.3901/JME.2017.11.020

• 航天工程中机构可靠性及其动力学和系统控制基础研究 • 上一篇    下一篇

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基于性能退化和通用发生函数的在轨空间机构系统多状态可靠性分析

阚琳洁1,2, 张建国1,2, 王丕东1,2, 王茜1,2   

  1. 1. 北京航空航天大学可靠性与环境工程技术重点实验室 北京 100191；
    2. 北京航空航天大学可靠性与系统工程学院 北京 100191
  • 出版日期:2017-06-05 发布日期:2017-06-05
  • 作者简介:

    阚琳洁，女，1985年出生，博士研究生。主要研究方向为复杂机械/机电系统可靠性设计分析。

    E-mail：kanlinjie1985@126.com

    张建国(通信作者)，男，1966年出生，博士，教授，博士研究生导师。主要研究方向为机械及机构可靠性、系统可靠性。

    E-mail：zjg@buaa.edu.cn

  • 基金资助:
    * 国家重点基础研究发展计划资助项目(973计划，2013CB733000); 20160628收到初稿，20170324收到修改稿;

Multi-state System Reliability Analysis of Space Mechanism in Orbit Based on Performance Degradation and Universal Generating Function

KAN Linjie1,2, ZHANG Jianguo1,2, WANG Pidong1,2, WANG Qian1,2   

  1. 1. Science and Technology on Reliability and Environmental Engineering Laboratory， Beihang University， Beijing 100191;
    2. School of Reliability and Systems Engineering， Beihang University， Beijing 100191
  • Online:2017-06-05 Published:2017-06-05

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摘要：

在轨空间机构在服役期间，其性能参数往往会因为耗损性机理(如磨损)发生退化，是具有多性能参数输出的多状态系统。因此，基于“两态性”假设的传统可靠性分析方法并不能准确的分析在轨空间机构的多状态可靠性。针对此问题，提出了性能退化和通用生成函数(Universal generating function， UGF)相结合的系统多状态可靠性分析方法。建立了性能参数分布矢量模型，在此基础上利用UGF建立了多性能参数退化下的在轨空间机构系统多状态可靠性模型。分别给出了已知退化机理模型和未知退化机理模型两种情况下的状态概率计算方法，并提出了多性能参数退化下的系统可靠度分析方法。结合双轴驱动机构系统的实例分析，验证了所提方法的有效性，具有工程应用的指导意义。

关键词: 多状态系统, 可靠性分析, 随机过程, 通用生成函数, 性能退化, 在轨空间机构

Abstract:

Space mechanism in orbit is a system with the output of multiple performance parameters which tend to degrade because of degradation mechanism. So space mechanism in orbit is a multi-state system with multiple rates of performance. Traditional reliability analysis methods based on the binary state assumption cannot accurately analyse the reliability of space mechanism in orbit. For the purpose of accurate analysis of system reliability, a multi-state reliability analysis method based on the performance degradation and universal generating function (UGF) is proposed. The performance distribution model was built and the arithmetic model is embedded into the structure/property function and performance rates combination model by UGF. On this basis, a multi-state reliability model of the system is established. The state probability analysis method of the known degradation mechanism model and the unknown degradation mechanism model is given respectively, and the multi-state system reliability analysis method under multi-performance parameter degradation is proposed. This method is effective and feasible validated by conducting an example on a two-axes-position mechanism of a satellite antenna.

Key words: multi-state system, performance degradation, reliability analysis, stochastic process, universal generating function, space mechanism in orbit

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