Micro-environment Control by Using Fuzzy Theory
| Autor: | Ting-Yi Chiu, 邱庭毅 |
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| Rok vydání: | 2015 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 103 In recent years, the global climate change and extreme weather result in the abnormal global climate. All kinds of natural disasters occurred occasionally and globally. Food issue becomes a crisis in many areas. Many solutions were also tried simultaneously. The Plant Factory is one of the solutions tried. The Plant Factory is a new concept and technology made in recent years. A confined building, with artificial light, controlled temperature, humidity and carbon dioxide needed for crop growth, dominated by environmental control systems is the production model of the plant factory. However, the high set up and operating cost and the less profits of production made the commercialization of the plant factory progress slowly. Therefore, this thesis employs the LabVIEW programing, a low-cost Arduino micro-controller and the fuzzy theory algorithm to create an micro-environment control scheme on temperature and humidity, the two most important parameters, and looks forward to achieve the cost-down purpose on the micro-environment temperature and humidity control for the plant factory. In this study, ON-OFF Control with Hysteresis Dead Zone and Fuzzy Control two control methods, were implemented and compared by 5 required scenarios of temperature and humidity output responses. The results show that the coefficients of variation (C.V.) were less than 5% when Fuzzy control method was employed. It also means that this simple and low-cost fuzzy control scheme proposed with 3 membership functions and 81 control rules, is always capable of satisfying the micro-environment requirements. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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