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| 題 名 | 通風空間中氣體濃度動態不確定性之模糊法描述 |
|---|---|
| 作 者 | 鄭偉聰; 廖中明; | 書刊名 | 農業工程學報 |
| 卷 期 | 41:1 1995.03[民84.03] |
| 頁 次 | 頁46-60 |
| 分類號 | 434.25 |
| 關鍵詞 | 氣體濃度動態; 模糊理論; 不確定性; 渾沌; Gas concentration dynamics; Fuzzy theory; Uncertainty; Chaos; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 實際通風空間中,氣體濃度動態受許多外界因素干擾,而干擾因素之內延(質)及外延(量)性質,並無法確切反映出。因此,僅在現有物理概念下運用。本文利用模糊理論可表達不明確度及主客觀現象間過渡性質的特點。將影響通風空間之可能因素視為模糊影響集輸入,並進行量化釙模擬濃度動態不確定性,借以預估濃度動態受干擾之各種行為,如氣體混合比及氣體濃度動態變化等。模式以一通風空間中二氧化碳氣體動態行為做參考比較,考慮之模糊歸屬度合成為溫差、濕差、及空氣交換率三者。模式模擬結果能展現真實二氧化碳濃度不確定行為。結果並顯現模糊動態訊息中具有的渾沌現象。 |
| 英文摘要 | The dynamic behavior of gas concentrations in a ventilated airspace is usually interfered with other factors such as air exchange rate and moisture/temperature differences between internal and external. The above noted mechanisms exist the ambiguity in general physical concepts and lack crispness between intensive (i.e., quality) and extensive (i.e., quantity) properties. A fuzzy set theory therefore is used adequately to describe the uncertainties of gas concentration dynamics in a ventilated airspace. The fuzzy theory has the characteristics in describing the transition between objective and subjective. The input disturbed factors can be seen as fuzzy influenced events to quantify and simulate the uncertainties of gas concentration dynamics. As a result, the disturbed behavior can be predicted. Thus, a fuzzy model considered temperature/moisture differences and air exchange rate as a fuzzy membership composition is applied to simulate the dynamics of carbon dioxide concentration in a ventilated airspace. Results obtained from this study are found compare favorably with that from the uncertainties of actual gas dynamics behavior. The chaotic phenomena in fuzzy dynamics are also shown. |
本系統中英文摘要資訊取自各篇刊載內容。