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開放式茄子采摘機(jī)器人設(shè)計(jì)與試驗(yàn)
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    摘要:

    根據(jù)茄子生長(zhǎng)的空間分布,利用優(yōu)化設(shè)計(jì)方法進(jìn)行了機(jī)器人本體結(jié)構(gòu)參數(shù)設(shè)計(jì),開發(fā)了4自由度關(guān)節(jié)式采摘機(jī)器人機(jī)械本體。采用基于直方圖的固定雙閾值法對(duì)G—B灰度圖像進(jìn)行分割。根據(jù)果蔬采摘機(jī)器人對(duì)視覺系統(tǒng)的要求,提取了果實(shí)目標(biāo)的輪廓、面積、質(zhì)心、外接矩形以及切斷點(diǎn)等特征。整機(jī)性能測(cè)試結(jié)果表明:以單攝像頭兩步法測(cè)距,當(dāng)測(cè)量距離在275~575mm范圍內(nèi),測(cè)量誤差基本都在±18mm之內(nèi);整機(jī)試驗(yàn)系統(tǒng)運(yùn)行穩(wěn)定可靠,抓取成功率為89%,平均耗時(shí)

    Abstract:

    37.4s。The optimal design was made on the parameters of the robot framework and structure according to the growth distribution space of eggplant. A joint type robot with 4-degree freedom for fruit and vegetable picking was developed. The fixed bilateral threshold based histogram was adopted to split the G—B gray images.To meet the vision requirement of the fruit and vegetable picking robot, the object’s characters, such as outline, area, center of gravity, enclosing rectangle and the point of cutting off, were picked up. The performance test on the whole machine was done on the robot system with the method of single camera and two-step measuring distance, which shows that the measure error is within ±18mm when the measure distance ranges from 275mm to 575mm. The system runs smoothly and reliably. The success ratio of picking is 89% and the average time consumed is 37.4s.

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宋健,孫學(xué)巖,張鐵中,張賓,徐麗明.開放式茄子采摘機(jī)器人設(shè)計(jì)與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(1):143-147.[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(1):143-147.

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