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Fabrication of a Breathing Assist Device for Saxophone Players with Breathing Problems
Tomonori Kato,Tadataka Ashikari,Chikara Matoba,Asashi Mawatari,Pitak Thumwarin 유공압건설기계학회 2021 드라이브·컨트롤 Vol.18 No.4
The aim of this study was to establish a breathing assist system for saxophone players with breathing problems. Although the saxophone is a popular wind instrument with a reed in its mouthpiece, it can be difficult for people with breathing problems to play this instrument, as it requires adequate breath support for deep and even long breaths. To solve this problem, the authors propose a breathing assist device, which functions like a pneumatic master–slave amplifier, for saxophone players with breathing problems. First, the proposed device is fabricated. Second, the effectiveness of the breathing assist device as a master–slave amplifier is confirmed through experiments. Third, the dynamic characteristics of the device are tested up to 10 Hz, and they demonstrate that the device responds well for up to approximately 5 Hz.
Characteristic measurements of a low energy atmospheric pressure plasma for blood coagulation
Hiromasa YAMADA,Tomonori HOTTA,Hajime SAKAKITA,Yutaka FUJIWARA,Jaeho KIM,Hirotomo ITAGAKI,Masanori FUJIWARA,Susumu KATO,Satoru KIYAMA,Nobuyuki SHIMIZU,Hayao NAKANISHI,Yuzuru IKEHARA 한국진공학회 2016 한국진공학회 학술발표회초록집 Vol.2016 No.8
Tatsuya Funaki,Tomonori Kato,Kenji Kawashima,Toshiharu Kagawa 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In industry, an unsteady flow rate measurement of gases is becoming important increasingly. Our group has been developed an unsteady flow generator with an isothermal chamber for gases and showed that the calibration of the dynamic characteritics for the tested flow meter was effective. However, not only the measurement of the instantaneous flow rate value but also the evaluation of the time mean value in the unsteady flow becomes important in inustry. And it was difficult to control precisely the time mean value of the generated flow rate using the former unsteady flow generator which we developed. To solve this problem,our group developed an oscillatory gas flow generator with highly preciseinlet flow control system in 2008. In this research, to improve and clarify the precision of the generated flow rate with the oscillatory gas flow generator, we conduct to evaluate the performance of the in let flow rate control system with the sonic nozzle and the high precise pressure regulator. As a result, the highre producible results and stability were shown. Moreover, we perform the experiments and uncertainty analysis and confirm the effective of the suggested method.