3110 フェードイン特性をもつ空気圧用消音器に関する研究(S45-2 フルードパワー機器 II,S45 フルードパワー機器)

概要

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A new consideration about the noise reduction is necessary when the pneumatic system is applied to medical and welfare apparatus in a room. A high performance pneumatic silencer having effect of fade-in has been developed in previous papers. The fade-in is an acoustic characteristic that the A-weighted sound pressure level gradually increases. The pneumatic silencer consists of silencers, a fade-in device and a speed controller. It has been shown that the sound power level is very low compared with that of a normal silencer and the effect of fade-in reduces unpleasantness of noise. In this study, pressure, volume flow rate in the pneumatic silencer and displacement of a spool in the fade-in device are measured and noise reduction is examined from pressure fluctuations.
社団法人日本機械学会の論文
2006-09-15