本文選題：機(jī)器人 + 模型　； 參考：《農(nóng)業(yè)工程學(xué)報(bào)》2017年15期

【摘要】：為提高除草劑的有效利用率、降低環(huán)境污染,該文研制了一種靶向滅草機(jī)器人,建立機(jī)器人的藥液噴灑動力學(xué)模型是提高對靶施藥精度的關(guān)鍵。在綜合考慮多種影響因素前提下,采用空氣動力學(xué)原理建立了液滴在噴灑過程中的動力學(xué)模型,并推導(dǎo)出液滴的落地點(diǎn)公式;在此基礎(chǔ)上通過計(jì)算機(jī)數(shù)值模擬得出了液滴群的落地覆蓋區(qū)域,同時分析了液滴阻力特性及各工作參數(shù)對運(yùn)動過程的影響;在室內(nèi)無風(fēng)條件下,應(yīng)用高速攝像技術(shù)進(jìn)行了噴灑試驗(yàn),將液滴群的實(shí)際落地覆蓋區(qū)域與理論覆蓋區(qū)域比對,相對誤差為8%~13%,同時采用吸水紙稱質(zhì)量法分析了藥液有效覆蓋區(qū)域的沉積量分布特性。研究結(jié)果表明:借由藥液噴灑動力學(xué)模型得出的理論藥液覆蓋區(qū)域與試驗(yàn)結(jié)果具有一定的吻合性,驗(yàn)證了模型的適用性。該研究可為搭建相關(guān)靶向噴灑系統(tǒng)提供參考。
[Abstract]:In order to improve the effective utilization of herbicides and reduce environmental pollution, a targeted herbicide robot was developed in this paper. Based on the aerodynamics principle, the dynamic model of droplet in spraying process was established, and the drop location formula was deduced. On this basis, the drop coverage area of droplet group is obtained by computer numerical simulation, and the influence of droplet resistance characteristics and working parameters on the motion process is analyzed. The spray test was carried out by using high speed camera technology. The relative error of the actual drop coverage area was compared with that of the theoretical coverage area, and the relative error was 8%. At the same time, the distribution characteristics of the deposition amount in the effective coverage area of the liquid was analyzed by using the water-absorbing paper weighing method. The results show that the theoretical coverage area obtained from the spray kinetic model is consistent with the experimental results, and the applicability of the model is verified. This study can be used as a reference for setting up a related target spraying system.
【作者單位】： 東北農(nóng)業(yè)大學(xué)工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51405078) 黑龍江省博士后基金(LBH-Z13022) 黑龍江省普通高等學(xué)校青年創(chuàng)新人才培養(yǎng)計(jì)劃(LR-356214) 東北農(nóng)業(yè)大學(xué)“青年才俊”項(xiàng)目(518020)
【分類號】：S224.1;TP242
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本文編號：2054842