卫星健康管理故障诊断算法的设计及其实现

Design and Implementation of Fault Diagnosis Algorithm for Satellite Health Management

自主健康管理系统对实现卫星安全性、可靠性和经济适用性具有重要意义,故障诊断算法是自主健康管理的核心技术之一。文章介绍了基于信号处理的故障诊断算法、基于解析模型的故障诊断算法和基于定性模型的故障诊断算法的国内外研究现状;提出了每种诊断算法的设计思想和实现途径;根据上述途径并结合卫星控制分系统的特点,得出了基于Unscented变换的故障诊断仿真结果;还给出了故障诊断算法的验证方案。这些算法能够满足星上故障诊断和处理的需求,对自主健康管理系统的实现具有参考意义。

Health management and automation system is significant for satellite to achieve the requirements of safety,reliability and economics.Fault diagnosis algorithm is one of the core technologies for automatous health management.The paper introduces the research status of three fault diagnosis algorithms,including fault diagnosis algorithm based on signal processing,fault diagnosis algorithm based on analytical model and fault diagnosis algorithm based on qualitative model.Based on the investigation above,the design idea and implementation approach of the three algorithms are proposed.In addition,the simulation results of fault diagnosis algorithm with unscented transform are given according to the implementation approach above.Moreover,the scheme for verification of diagnosis algorithm is given with the characteristics of the satellite control subsystem.These fault diagnosis algorithms can meet the requirement for fault diagnosis and fault treatment in satellite,which is of significance for health management and automation.