소음 저감 장치를 통한 공압 시스템 배기 소음 분석

다국어 초록 (Multilingual Abstract)

Pneumatic systems are devices that use compressed air to transmit and control power, which are used in pneumatic artificial muscles and cause loud noises. The exhaust noise characteristics of pneumatic systems with or without noise reduction devices were experimentally analyzed. The noise reduction device mimicked the shark gill structure, exhausting the compressor pressure from the initial 8 bar to the final 2 bar, and varying the measurement position according to the angle and distance for close noise analysis. When equipped with a noise reduction device for non-uniformly dense porous cells, the noise reduction effect was approximately 18 dB compared to when the device was not present. Noise reduction devices for homogeneous porous cells showed little reduction in exhaust rate compared to non-uniform porous cell devices, and noise was reduced by about 20 dB compared to those without devices.