针对空间有效载荷系统高复杂性和高可靠性需求的特性,设计了一种基于SysML(System Modeling Language)的故障诊断方法.该方法融入MBSE(Model Based System Engineering)思想,提出了基于SysML的空间有效载荷系统故障分析流程.基于SysML对空间有效载荷系统建立了故障分析相关的模型,其中,为满足故障分析建模的需求,对SysML元模型进行扩展定义,从而实现对组件间关系和故障表征与直接关联组件间关系的描述;基于所建模型构建故障诊断的整体框架,并提供从SysML数字模型到FTA(Fault Tree Analysis)的转换逻辑,从而实现对所有故障可能性的获取.通过案例分析,对提出方法在实际应用中的具体流程进行分析,并验证了该方法的有效性和实用性.
SysML-based Fault Diagnosis Method for Space Payload Systems
Aiming at the characteristics of high complexity and high reliability requirements of space payload systems,a fault diagnosis method based on SysML(System Modeling Language)is designed.The method incorporates the idea of MBSE(Model Based System Engineering),and proposes a failure analysis process of space payload system based on SysML.First,a failure analysis related model is estab-lished for the space payload system based on SysML,in which the SysML meta-model is extended and defined to meet the needs of failure analysis modeling,thus realizing the description of inter-component relationships and the relationship between the fault characterization and the directly related components.Then,an overall framework for fault diagnosis is constructed based on the constructed model,and the conversion logic from the SysML models to FTA(Fault Tree Analysis)is provided,thus finally obtain-ing all fault possibilities.Finally,this paper demonstrates the specific process of the method in practical application through case studies and verifies the effectiveness and practicality of the method.
System modeling languageSpace pay loadFault diagnosisFault tree analysis
万方数据
维普
