引气系统建模及传感器集优化分析

MADe(维修感知设计环境)是基于功能流模型、系统失效知识和测试信息的系统测试性与健康感知综合仿真分析工具。给出了功能流模型定义及其建模流程,详细分析了飞机引气系统的工作模式、层次结构、功能流及典型部件的物理失效过程,并实现了引气系统典型工况的建模。基于引气系统功能流模型和功能流传播表对传感器集进行了优化,包括传感器集的选择和诊断规则分析。仿真结果表明,该方法能有效地实现引气系统的建模,实现引气系统故障诊断与健康监控方案的优化。

Optimizing Analysis of Bleed Air System Modeling and Sensor Set

Maintenance Aware Design Environment (MADe) is an integrated simulation tool used for system testability and health monitoring analysis based on function flow model, system failure knowledge and test information.The definition of function flow model and modeling process are presented. The aircraft bleed air system is analyzed including working modes, hierarchy, function flows and physical failure process for typical component. The model of bleed air system is achieved under typical work condition. Based on the system model and the propagation feature of function, the sensor sets are simulated and analyzed, including the selection of sensor set and diagnostic rules analysis. The simulation results show that the simulation method can be used for bleed air system modeling effectively, and it contributes to the optimization of health monitoring and fault diagnosis for aircraft bleed air system.