Design and Experimental Optimization of Hand-held Manipulator for Picking Famous Tea Shoot
Abstract
In response to the difficulty of mechanical picking of famous tea, a hand-held famous tea shoot picking manipulator was designed based on the analysis of the agronomic requirements of tea picking and manual picking movements. The kinematic model of the picking manipulator was used to obtain the parameter range of magnet distance, active finger angular velocity and active finger turning angle, which were factors affecting the picking efficiency. The Box-Behnken response surface analysis method was used to investigate the interactive effect of the influencing factors on the picking success rate. A quadratic regression model was established with the picking success rate as the response value. The significance ranking of the influencing factors on the picking success rate was active finger angular velocity, magnet distance and active finger angle.The optimization module of Design-Expert 11.0 software was used to optimize the factors with the maximum picking success rate as the optimization objective, and the optimization results were obtained as follows: magnet distance was 40.04mm, active finger rotation angle was 153.0° and active finger angular velocity was 3.38rad/s. The picking experiment of famous tea was carried out with the optimized parameters, and the results showed that the picking success rate was 74.3%, the average speed of three picking was 25.2 pieces/min, the relative error between the test value and the predicted value was less than 5%, and the optimized model results were reliable.
Keywords: famous tea, picking manipulator, response surface, picking success rate.
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FU Wei. Agricultural industrialization rooted in the rural community—asociological study of characteristic agriculture in the context of poverty alleviation [ J ]. Journal of Beijing University of Technology ( Social Sciences Edition) , 2019, 19(5) ; 16 - 24. (in Chinese)
LUO Zeyong, CHEN Jian, FANG Jingjing, et al. Current situation and development suggestions of tea garden planting mechanization in hilly and mountainous areas[J]. Journal of Agricultural Mechanization Research, 2020, 42(2): 1 -7. (in Chinese)
LIU Jizhan. Research progress analysis of robotic harvesting technologies in greenhouse[J]. Transactions of the Chinese Society for Agricultural Machinery, 2017,48( 12) ;1 - 18. (in Chinese)
DU Jianhin, CHEN Fuqiao, JIANG Renhua, et al. Development of Sri Lanka tea industry and enlightenment to China [ J ] . World Agriculture, 2017(4) ; 164 - 170,227. (in Chinese)
TANG Yiping, HAN Wangming, HU Anguo, et al. Design and experiment of intelligentized tea-plucking machine for human riding based on machine vision [J]. Transactions of the Chinese Society for Agricultural Machinery, 2016,47(7): 15 -20. (in Chinese)
YI Wenyu, CHENG Fangping, QIU Yunqiao, et al. Research status and development trend of single tea-picking machine[J]. Journal of Chinese Agricultural Mechanization, 2020, 41(11) : 33 -38. (in Chinese)
YUAN Haiho, HUA Jinjie, DENG Yuliang, et al. Optimization of grading and classification technology for machine-picking leaves based on YJY-2 type classifier [ J ]. Transactions of the CSAE, 2016,32(6) ;276 -282. (in Chinese)
SHI Jianjun, HUANG Biao, CHEN Weiheng, et al. Some developments in the research of tea picking technology [ J ]. Hans Journal of Agricultural Sciences, 2021 , 11(2); 150 - 155. ( in Chinese)
ZHU Y, WU C, TONG J, et al. Deviation tolerance performance evaluation and experiment of picking end effector for famous tea [ J ]. Agriculture, 2021, 11 (2): 128.
ZHANG L, ZOU L, WU C, el al. Method of famous tea sprout identification and segmentation based on improved watershed algorithm[ J]. Computers and Electronics in Agriculture, 2021 , 184( 1 ) : 106108.
YUAN Yanfang. Research on the picking manipulator of famous tea and picking strategy [ D]. Wuhan; Iluazhong Agricultural University, 2017. (in Chinese)
FAN Y uanrui. Design and research of automatic tea picking machine based on parallel robot D . Qingdao; Qingdao University of Science and Technology ,2019. (in Chinese)
QIN Guangming, ZHAO Ying, XIAO Hongru, et al. 4CZ — 12 intelligent tea harvest robot design and field experiment [ J ]. Journal of Chinese Agricultural Mechanization, 2014, 35 ( 1 ) : 152 - 156,169. (in Chinese)
MOTOKURA K, TAKAHASHI M, EWERTON M, et al. Plucking motions for tea harvesting robots using probabilistic movement primitives[ J ]. IEEE Robotics and Automation Letters, 2020, 5:3275 -3282.
DU Zhe, HU Yongguang, WANG Sheng. Simulation and experiment of reciprocating cutter kinematic of portable tea picking machine[J]. Transactions of the Chinese Society for Agricultural Machinery, 2018, 49( 1 ) : 221 -226. (in Chinese)
WU Xiankun, LI Bing, WANG Xiaovong, et al. Design and analysis of single knapsack tea plucking machine [j]. Journal of Agricultural Mechanization Research, 2017, 39(8); 92 -96,101. (in Chinese)
LIU Biao, XIAO Hongru. Design of main mechanism of a single electric tea-picking machine [J ]. Jiangsu Agricultural Sciences, 2018, 46(5) : 180 - 182. (in Chinese)
W ANG Sheng. Research design and experimental study on portable eletric tea plucking machine [ D ] . Zhenjiang: Jiangsu University,2018. (in Chinese)
SHANG Kaige. Mechanical structure design and control system research of tea-picking robot [ D]. Changchun; Changchun University of Science and Technology ,2019. (in Chinese)
ZHANG Kaixing, W ANG Wenzhong, ZHAO Xiuvan, et al. Design and experiment of drum-type hot air re-dryer for tea J]. Transactions of the Chinese Society for Agricultural Machinery, 2020,51(5) :377 -386. (in Chinese)
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