飞机空气循环机的建模与故障仿真  

Aircraft Air Cycle Machine Modeling and Fault Simulation

作　　者：何永勃[1] 杨燕辉[1] 王丽哲[1] 

机构地区：[1]中国民航大学航空自动化学院,天津300300

出　　处：《计算机仿真》2012年第8期72-75,404,共5页Computer Simulation

基　　金：中央高校基本科研业务基金(ZXH2011B002)

摘　　要：飞机空气循环系统故障识别优化问题,飞机循环制冷系统结构复杂,故障类型较多。为深入分析飞机制冷系统故障机理,提高故障源定位的准确性,根据能量守恒和动量方程等建立了热交换器、压气机、涡轮部件及空气循环机整体数学模型。采用simulink仿真,得到了流量控制活门、热交换器、冲压空气活门等部件发生故障时的故障征兆及空气循环机部件参数的动态变化曲线,并详细论述了曲线变化过程。仿真结果表明,故障与理论的结果一致,表明模型对制冷系统故障诊断有重要参考价值。The Air Cycle Machine （ACM） used in aircraft environmental control system is apt to many kinds of failures because of its complicated structure. The mathematical models of the heat exchanger, the compressor, the turban, as well as the whole ACM, were established based on the law of conservation of energy and momentum equa- tion, which can be used for deep analysis of the fault mechanism and thus improving the accuracy of the failure source location. Using SIMULINK, the failure symptoms and dynamic curves of the main parameters in the conditions of part failure, such as the Flow Control Valve（ FCV）, heat exchanger and ram air door, were given and discussed in detail. The agreement of the simulation result and the result in the airline fault collection manual indicates that the ACM model is a valuable reference to the technicians for diagnosis.

关 键 词：空气循环机 建模 故障仿真 

分 类 号：N945.12[自然科学总论—系统科学]