摘要
在座舱高度超过12km后供氧系统需要对飞行员进行应急加压供氧,通过在Matlab/simulink软件上建立仿真模型对加压供氧性能进行数值仿真,分析了面罩余压、拉力管压力及压力比随高度变化的特性,以及结构参数对面罩余压、拉力管压力及压力比的影响。通过仿真结果与试验结果的对比分析,表明所建立的仿真模型是准确的,采用的仿真计算方法符合计算精度要求,为供氧系统的仿真研究提供了一定的参考作用。
Oxygen Supply System （OSS） would give the protection and supply emergency oxygen to pilots at high altitude. The math- ematic models for the characteristics of pressure oxygen supply were built, and by the numerical simulation with MATLAB/SIUMLINK, the characteristics of pressure oxygen supply were achieved. A detailed analysis was conducted for the characteristics of the press in ox- ygen mask, the press in pressure suit and ratio of pressure, and then the major parameters were found. The results are in good agree- ment with those measured in the experiments, which shows that the analytical model is correct and the simulation method is in accord- ance with the precision requirements. The study and its conclusions are useful for the design to the characteristics of OSS at high altitude.
出处
《微计算机应用》
2010年第2期1-6,共6页
Microcomputer Applications
