2013 Fiscal Year Final Research Report
Active control system for standing wave attenuation in looped-tube-type thermoacoustic refrigerator
| Project/Area Number |
23560523
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Control engineering
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| Research Institution | Nagaoka University of Technology |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
YAMADA Noboru 長岡技術科学大学, 工学部, 准教授 (90321976)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 熱音響自励発振現象 / ループ管熱音響冷凍機 / フィードバック制御 / 指向性音源・センサ / 能動騒音制御 / 定在波抑制制御 / ロバスト制御 |
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| Research Abstract |
In this study, an active noise control system which attenuates a single traveling wave in duct is proposed. It is shown based on Nyquist stability criterion that a looped-tube-type thermoacoustic system becomes easier to make spontaneous oscillation by combining the proposed system.
It is also shown that the pressure amplitude in tube can be stabilized against temperature gradient and/or thermal source fluctuation by feedback control of pressure in a standing-wave-type thermoacoustic engine.
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