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冷凍干燥物料水分在線測量系統(tǒng)設(shè)計(jì)與試驗(yàn)
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    摘要:

    根據(jù)JDG-0.2型真空凍干試驗(yàn)機(jī)的工況特點(diǎn),設(shè)計(jì)了基于可重組虛擬儀器的凍干物料含水率在線測量系統(tǒng),,可實(shí)時采集,、分析計(jì)算,、存儲和顯示物料的質(zhì)量,、含水率和失水率等相關(guān)參數(shù),,并繪制含水率和失水率的變化曲線,,為凍干工藝過程的判別與調(diào)控提供了準(zhǔn)確的數(shù)據(jù),。系統(tǒng)運(yùn)行結(jié)果表明,物料質(zhì)量的相對測量誤差小于0.5%,,含水率的絕對測量誤差小于0.5%,,滿足冷凍干燥生產(chǎn)工藝過程監(jiān)控的要求。

    Abstract:

    Based on virtual instrument, the on-line moisture content measurement system was designed, and the measurement condition of the JDG-0.2 vacuum freeze-drying machine was considered during the system development. The system can realize real-time data acquisition, calculation and storage. It can also display the weight, moisture content and the rate of the moved water in the samples. Moreover, the change curve of the moisture content and the rate of the moved water can be shown in this system. The result showed that the relative error to the weight of the samples is less than 0.5%, and the absolutely error to the moisture content is less than 0.5%, which achieved the requirement of the on-line monitoring.

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崔清亮,郭玉明,鄭德聰.冷凍干燥物料水分在線測量系統(tǒng)設(shè)計(jì)與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2008,39(4):91-96.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(4):91-96.

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