A STUDY ON A SOUND OPERATED VALVE FOR A WEARABLE PNEUMATIC SYSTEM
A STUDY ON A SOUND OPERATED VALVE FOR A WEARABLE PNEUMATIC SYSTEM
复制标题
可穿戴气动系统声控阀的研究
DOI：
10.5739/isfp.2008.433
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
H. Tsukagoshi
中科院分区：
文献类型：
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作者：
A. Kitagawa;Shuyi Jing;Canghai Liu;H. Tsukagoshi
提出了一种声控方向控制阀(SODC-Valve)，它响应供气管道内传播的特定频率的声音而开启和关闭，因此不需要电线来传递控制信号。通过使用多频声音，可以同时控制多个阀门，从而可以紧凑地构建气动多度穿戴系统。首先，提出并改进了声-气压力转换器，以抑制自激振动。其次，对声气压力转换器的基本特性进行了研究，结果表明，是否加入特定频率的声音，其背压是不同的。此外，还研制了一种先导阀。针对研制的先导阀先导压力变化量仅为20kPa的特点，提出并研制了主阀。最后，利用干冰动力电池作为便携式气源，研制了可穿戴执行器，研制了两个声控方向控制阀，构建了气动多自由度可穿戴式助力系统。实验结果表明，声控换向阀在气动多自由度穿戴系统中是可行和实用的。
A sound operated directional control valve (SODC-Valve) is proposed which opens and closes in response to the sound of a specific frequency propagated inside the gas supply tube and therefore needs no electric wiring to convey the control signals. By using multi-frequency sound, several valves can be controlled simultaneously and resultantly the pneumatic multi-degree wearable system can be constructed compactly. Firstly, the sound-gas pressure converter is proposed and improved so that self-excited vibration can be suppressed. Secondly, the basic characteristic of the sound-gas pressure converter is investigated to show that the back pressure is different depending on whether the sound of specific frequency is added or not. Furthermore, a pilot valve is developed. Because the pilot pressure change of the pilot valve developed is only 20kPa, a main valve is proposed and developed. Finally, a pneumatic multi-degree-of-freedom wearable power-assist system is constructed by using a Dry Ice Power Cell as the portable gas supply, wearable actuators developed in the previous study, and two sound operated directional control valves developed. Experimental results show that the sound operated directional control valve is feasible and practical in the pneumatic multi-degree-of-freedom wearable system.