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氣電混合驅(qū)動(dòng)全天候蘋果收獲機(jī)器人設(shè)計(jì)與試驗(yàn)
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國(guó)家自然科學(xué)基金項(xiàng)目(31571571、61973141)和江蘇省優(yōu)勢(shì)學(xué)科建設(shè)工程項(xiàng)目(PAPD)


Design and Experiment of Apple Harvesting Robot Based on Gas-electric Hybrid Drive
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    摘要:

    提出了一種基于氣電混合驅(qū)動(dòng)且能夠全天候工作的高效率蘋果收獲機(jī)器人。該機(jī)器人機(jī)械臂包含5個(gè)自由度,混合使用電動(dòng)和氣動(dòng)兩種驅(qū)動(dòng)方式,同時(shí)保證機(jī)械臂的準(zhǔn)確定位和末端執(zhí)行器對(duì)果實(shí)的快速柔性抓取。機(jī)器人視覺識(shí)別系統(tǒng)結(jié)合了機(jī)器視覺和深度神經(jīng)網(wǎng)絡(luò)方法,在提高系統(tǒng)魯棒性的同時(shí)優(yōu)化了系統(tǒng)的整體檢測(cè)速度。此外,機(jī)器人配備的夜間照明系統(tǒng)使其能夠?qū)崿F(xiàn)全天候工作。在實(shí)驗(yàn)室環(huán)境下進(jìn)行了機(jī)器人視覺檢測(cè)試驗(yàn)和蘋果采摘試驗(yàn),結(jié)果表明,視覺系統(tǒng)定位蘋果的平均時(shí)間為44ms,機(jī)器人的采摘率為81.25%,平均每個(gè)蘋果的采摘時(shí)間為7.81s。

    Abstract:

    In order to design a highly efficient apple harvesting robot, an apple harvesting robot was proposed based on gaselectric hybrid that can work around the clock. The design and evaluation of an apple harvesting robot in the laboratory was introduced. The freedom manipulator with five degrees adopted both electric and pneumatic hybrid power as the power source. The electric motor ensured that the arm can accurately position the apple, and the pneumatic motor ensured the endeffector can quickly and flexibly grasp the apple. The apple recognition algorithm combined traditional machine learning methods with the recent popular deep neural network methods to optimize the detection speed while improving the robustness, and used the builtin lighting system to achieve longterm work. The control system included an industrial computer, an AC servo drive, and a pneumatic actuator that controlled the robot arm and the end effector to access and pick the apple. The system carried out visual and picking experiments in a laboratory environment. The average time for visual positioning of apples was 44ms per image. The harvesting system reached an accuracy of 81.25% with average picking time of 7.81s per fruit.

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趙德安,吳任迪,劉曉洋,張小超,姬偉.氣電混合驅(qū)動(dòng)全天候蘋果收獲機(jī)器人設(shè)計(jì)與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2020,51(2):21-28,36. ZHAO Dean, WU Rendi, LIU Xiaoyang, ZHANG Xiaochao, JI Wei. Design and Experiment of Apple Harvesting Robot Based on Gas-electric Hybrid Drive[J]. Transactions of the Chinese Society for Agricultural Machinery,2020,51(2):21-28,36.

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  • 收稿日期:2019-09-12
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  • 在線發(fā)布日期: 2020-02-10
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