Beaman J J, Wang S Y, Masada G Y
University of Texas, Austin 78712.
Aviat Space Environ Med. 1987 Dec;58(12):1225-9.
The outlet oxygen concentration of an onboard oxygen generation system (OBOGS) is controlled in this study by varying the cycle time of a pressure swing adsorption process. The control of the oxygen concentration is highly desirable since both high and low concentrations of oxygen can cause physiological problems. This cycle time control method can be easily implemented using a DC motor and a simple electronic controller. The physiological requirements recommended for high-performance tactical aircraft can be met by this method with either an open-loop or closed-loop configuration. The open-loop configuration requires the measurement of crew breathing flowrate and cabin pressure. The closed-loop configuration requires an additional measurement of oxygen concentration, but it has the advantage of being more adaptive to system variability during setup and operation. The method in either configuration requires very little adjustment and setup time in order to meet the specifications.
在本研究中，通过改变变压吸附过程的循环时间来控制机载制氧系统（OBOGS）的出口氧气浓度。对氧气浓度进行控制是非常必要的，因为过高或过低的氧气浓度都会引发生理问题。使用直流电机和简单的电子控制器就可以轻松实现这种循环时间控制方法。无论是开环配置还是闭环配置，这种方法都能够满足高性能战术飞机推荐的生理需求。开环配置需要测量机组人员的呼吸流量和机舱压力。闭环配置需要额外测量氧气浓度，但它的优点是在设置和运行过程中对系统变化的适应性更强。两种配置下的方法为了满足规格要求都只需要很少的调整和设置时间。
