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溫室設(shè)施環(huán)境中聲頻自適應(yīng)校準(zhǔn)研究
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國(guó)家科技重大專項(xiàng)資助項(xiàng)目（2008ZX07101—006）;國(guó)家留學(xué)基金資助項(xiàng)目（201206320038）


Self-adaptive Calibration of Acoustic Waves in Controlled Greenhouse
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    摘要:

    針對(duì)溫室設(shè)施環(huán)境中采用聲波促長(zhǎng)技術(shù)時(shí)，由于環(huán)境設(shè)施對(duì)聲音的來(lái)回反射、設(shè)施材料對(duì)不同聲頻的吸收作用等影響,，使得實(shí)際聲波信息失真,，造成加載的聲波與期望的聲波相差較大，提出一種解決方案,。通過(guò)及時(shí)修正聲頻發(fā)生系統(tǒng)傳遞函數(shù)特性參數(shù),，采用一種基于前饋補(bǔ)償?shù)拈]環(huán)控制方法實(shí)現(xiàn)對(duì)設(shè)施環(huán)境中所加載聲頻的自適應(yīng)校準(zhǔn),。在一個(gè)內(nèi)部長(zhǎng),、寬,、高分別為1.2m、0.53m,、0.9m的人工氣候箱內(nèi)進(jìn)行聲波加載試驗(yàn),，結(jié)果表明，該方法提高了聲波在設(shè)施環(huán)境中的加載精度,，對(duì)純音,、組合聲頻、音樂(lè)聲頻等類型的聲波均達(dá)到了良好的校準(zhǔn)作用,，輸出精度都在98%以上,。

    Abstract:

    Some kind of audible sound can help plants or animals to grow healthily and faster. However, the acoustic waves was hard to be produced accurately as they would be absorbed or reflected back and forth in controlled environments such as greenhouse, plant factory, or aquaculture factory. A solution for improving audible sound output based on a closed-loop feed-forward control method was proposed. The output sound can be corrected by updating the transfer function of sound generation system. Proof tests were conducted in an artificial climate cabinet with 1.2m×0.53m×0.9m. The results showed that pure tones, combination sound of pure tones, and normal music can be produced with over 98% output accuracy.

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朱松明,蔡衛(wèi)明,汪寧,賀惠農(nóng).溫室設(shè)施環(huán)境中聲頻自適應(yīng)校準(zhǔn)研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(3):180-185. Zhu Songming, Cai Weiming, Wang Ning, He Huinong. Self-adaptive Calibration of Acoustic Waves in Controlled Greenhouse[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(3):180-185.

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  • 在線發(fā)布日期: 2013-02-25
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