Development of an automatic control device for tea makers
碩士 === 國立臺灣大學 === 生物產業機電工程學研究所 === 96 === Based on the tea making culture in Taiwan and the components of coffee machines, it is tried to develop an automatic device suitable for characteristic tea. This study used some simple components to design the tea maker controllers and focused on the develop...
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ndltd-TW-096NTU054150242015-11-25T04:04:35Z http://ndltd.ncl.edu.tw/handle/83845128669901622085 Development of an automatic control device for tea makers 泡茶機自動控制裝置之研發 Yueh-Ting Tu 杜岳庭 碩士 國立臺灣大學 生物產業機電工程學研究所 96 Based on the tea making culture in Taiwan and the components of coffee machines, it is tried to develop an automatic device suitable for characteristic tea. This study used some simple components to design the tea maker controllers and focused on the development and testing of controllers. A single chip microprocessor has been applied to the key part of control system along with a voltage type temperature sensor measuring temperature. Then, the Celsius degree data are obtained from output voltage by analog to digital converter of microprocessor. Three important parameters were derived: Kp, Ki, and Kd in PID control by using Ziegler-Nichols rule which are substitution for error mathematical function. 6 heating modes were designed to fit 6 characteristic teas(Green tea, Long Jing Tea, Wun Shan Paochong tea, Tieh Kuan Yin tea, White-tip Oolong tea, Black tea)in main control program. This system shows the immediate temperature by seven-segment display. Liquid Crystal Display and buttons are provided for heating modes. It has been proven that the circuit of this system is precise and control process is stable. Experimental results have shown that the precision of constant temperature is within ±2℃ no matter heating or cooling. Sen-Fuh Chang 張森富 2008 學位論文 ; thesis 76 zh-TW |
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碩士 === 國立臺灣大學 === 生物產業機電工程學研究所 === 96 === Based on the tea making culture in Taiwan and the components of coffee machines, it is tried to develop an automatic device suitable for characteristic tea. This study used some simple components to design the tea maker controllers and focused on the development and testing of controllers. A single chip microprocessor has been applied to the key part of control system along with a voltage type temperature sensor measuring temperature. Then, the Celsius degree data are obtained from output voltage by analog to digital converter of microprocessor. Three important parameters were derived: Kp, Ki, and Kd in PID control by using Ziegler-Nichols rule which are substitution for error mathematical function. 6 heating modes were designed to fit 6 characteristic teas(Green tea, Long Jing Tea, Wun Shan Paochong tea, Tieh Kuan Yin tea, White-tip Oolong tea, Black tea)in main control program. This system shows the immediate temperature by seven-segment display. Liquid Crystal Display and buttons are provided for heating modes. It has been proven that the circuit of this system is precise and control process is stable. Experimental results have shown that the precision of constant temperature is within ±2℃ no matter heating or cooling.
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author2 |
Sen-Fuh Chang |
author_facet |
Sen-Fuh Chang Yueh-Ting Tu 杜岳庭 |
author |
Yueh-Ting Tu 杜岳庭 |
spellingShingle |
Yueh-Ting Tu 杜岳庭 Development of an automatic control device for tea makers |
author_sort |
Yueh-Ting Tu |
title |
Development of an automatic control device for tea makers |
title_short |
Development of an automatic control device for tea makers |
title_full |
Development of an automatic control device for tea makers |
title_fullStr |
Development of an automatic control device for tea makers |
title_full_unstemmed |
Development of an automatic control device for tea makers |
title_sort |
development of an automatic control device for tea makers |
publishDate |
2008 |
url |
http://ndltd.ncl.edu.tw/handle/83845128669901622085 |
work_keys_str_mv |
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