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茶葉殺青機雙模糊控制系統(tǒng)設計與試驗
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科技部科技型中小企業(yè)技術(shù)創(chuàng)新基金項目(14C26213401694)


Design and Experiment of Double Fuzzy Control System for Tea Cylinder Water-removing Machine
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    摘要:

    為實現(xiàn)茶葉加工機械智能化控制,,在分析茶葉加工工藝的基礎上,,提出基于模糊控制的茶葉殺青機控制方案。通過檢測殺青滾筒內(nèi)的鮮葉投葉量和鮮葉等級,,應用模糊控制規(guī)則決策,,實時調(diào)整殺青時間和殺青溫度的設定值,并在殺青溫度中嵌入模糊PID控制,,實現(xiàn)殺青溫度的精確控制,。利用NI USB-6215數(shù)據(jù)采集卡、西門子PLC等構(gòu)建數(shù)據(jù)采集與控制硬件系統(tǒng),,并用LabVIEW虛擬儀器測試雙模糊控制系統(tǒng)的輸出效果,。試驗分析了該控制系統(tǒng)輸出量對茶葉殺青效果的影響,試驗結(jié)果表明:該控制系統(tǒng)輸出的茶葉加工工藝參數(shù)殺青效果理想,,殺青溫度偏差低于1℃,,殺青時間偏差小于5s。該控制策略減少了制茶過程中人為因素的干擾,,提高了茶葉加工機械的智能化水平,。

    Abstract:

    On the basis of analysis on processing technology of tea, the fuzzy algorithm was applied to realize the intelligent control of traditional tea cylinder waterremoving machine. By detecting the weight and grade of fresh tea leaves in the tea cylinder waterremoving machine, the fuzzy control rule of decisionmaking was used to adjust time and temperature of tea waterremoving realtimely; at the same time, fuzzy proportionintegrationdifferentiation (PID) controller was used to adjust temperature of tea waterremoving to realize the accurate control. Data acquisition and double fuzzy control system hardware were made up with NI USB-6215 data acquisition card and Siemens programmable logic controller (PLC), etc. In addition, output effect of double fuzzy control system model was tested by laboratory virtual instrument engineering workbench (LabVIEW). Finally, the possibility of the double fuzzy control system was proved by the substantial evidence and the result of tea waterremoving was tested. Experiment result show that this control system output parameters are ideal for the waterremoving of tea, the temperature departure of waterremoving is less than 1℃ and the time deviation of waterremoving of tea is less than 5s. This control system can reduce the human factors in the process of teamaking. Whats more, it will improve the intelligent level of the machine for teamaking.

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曹成茂,吳正敏,梁閃閃,葛良志.茶葉殺青機雙模糊控制系統(tǒng)設計與試驗[J].農(nóng)業(yè)機械學報,2016,47(7):259-265. Cao Chengmao, Wu Zhengmin, Liang Shanshan, Ge Liangzhi. Design and Experiment of Double Fuzzy Control System for Tea Cylinder Water-removing Machine[J]. Transactions of the Chinese Society for Agricultural Machinery,2016,47(7):259-265.

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  • 收稿日期:2016-04-06
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  • 在線發(fā)布日期: 2016-07-10
  • 出版日期: 2016-07-10
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