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雙孢蘑菇遠(yuǎn)紅外干燥神經(jīng)網(wǎng)絡(luò)預(yù)測(cè)模型建立
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Experiment on Neural Network Prediction Modeling of Far Infrared Radiation Drying for Agaricus bisporus
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    摘要:

    分析了雙孢蘑菇在遠(yuǎn)紅外干燥過程中,輻射強(qiáng)度、輻射距離、物料溫度、物料厚度、干燥時(shí)間等因素對(duì)干燥速率的影響?;贐P神經(jīng)網(wǎng)絡(luò)建立了含水率與各因素之間的網(wǎng)絡(luò)模型結(jié)構(gòu),輸入層、隱含層和輸出層的神經(jīng)元數(shù)分別為5、11、1。以干燥試驗(yàn)數(shù)據(jù)作為訓(xùn)練和測(cè)試的樣本值,利用Matlab中的神經(jīng)網(wǎng)絡(luò)工具箱,經(jīng)過有限次迭代計(jì)算獲得一個(gè)反映試驗(yàn)數(shù)據(jù)內(nèi)在聯(lián)系的數(shù)學(xué)模型,并實(shí)現(xiàn)對(duì)該模型的訓(xùn)練和系統(tǒng)的模擬。結(jié)果表明:在試驗(yàn)范圍內(nèi),BP神經(jīng)網(wǎng)絡(luò)可以高效、準(zhǔn)確、快速地建立模型,且模型的預(yù)測(cè)值與實(shí)測(cè)值擬合較好,能夠準(zhǔn)確而可靠地實(shí)現(xiàn)含水率在線預(yù)測(cè)。

    Abstract:

    The factors influenced infrared radiation drying rates for Agaricus bisporus, such as radiation intensity, radiation distance, material temperature, material thickness and drying time were analyzed. The network model structure between moisture content and all the controlling factors was built based on feed-forward neural network, the selected structure of the applied neural network, with its five inputs, single output and 11 hidden neurons were used. All data series obtained from different drying runs were used for training and test, mathematical model responding to inner relationship of the experimental data was obtained by finite iteration calculation, and it was trained and simulated systemically by using Matlab neuralnetwork toolbox. It was concluded that the model could be built by the BP neural network, cost-effectively, accurately and rapidly during far infrared drying of Agaricus bisporus within the trial stretch. It was found that the predictions of the artificial neural network model fit the experimental data preferably, and the applications of the artificial neural networks could be used for the online state estimation moisture content with more suitable and accuracy.

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林喜娜,王相友,丁瑩.雙孢蘑菇遠(yuǎn)紅外干燥神經(jīng)網(wǎng)絡(luò)預(yù)測(cè)模型建立[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(5):110-114.Experiment on Neural Network Prediction Modeling of Far Infrared Radiation Drying for Agaricus bisporus[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(5):110-114.

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