We take the adjustablevalve as control objects and research the methods of the realizing of the hardware, software and algorithm of the system.
以电动调节阀为控制对象，探讨了整个控制系统的软、硬件实现和算法实现。
2
Its character is that through the adjustablevalve controlled by inspiration and expiration, it offers and halts oxygen supply. The utilization rate of oxygen is over 98%.
其主要特点是通过调控装置可使吸气时供氧，呼气时暂停供氧，故使氧的利用率高达98%以上。
3
It features adjustable floating needle valves and stainless steel air valve cartridges.