Design and test of a contact mechanics model for papaya picking

XIA Hongmei; XIA Juan; ZHEN Wenbin; ZHANG Bingchao

doi:10.7671/j.issn.1001-411X.2017.03.016

Journal of South China Agricultural University > 2017 > 38(3): 99-105. > DOI: 10.7671/j.issn.1001-411X.2017.03.016

XIA Hongmei, XIA Juan, ZHEN Wenbin, ZHANG Bingchao. Design and test of a contact mechanics model for papaya picking[J]. Journal of South China Agricultural University, 2017, 38(3): 99-105. DOI: 10.7671/j.issn.1001-411X.2017.03.016

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Design and test of a contact mechanics model for papaya picking

Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education/College of Engineering, South China Agricultural University, Guangzhou 510642, China

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Received Date: September 02, 2016
Available Online: May 17, 2023

Graphical Abstract

Abstract

Abstract

Objective
For stably picking papaya without damage.
Method
A clamping plan of papaya was designed by means of three-finger clamping symmetrically and wringing, and the equilibrium equation of contact force was constructed. On the basis of force screw theory, the clamping stability was analyzed. The picking contact mechanics model was formulated, and a picking test for papaya was conducted.
Result
There were no obvious deformation, crack or indentation on the surfaces of papaya samples. The pulp at the clamping position had no obvious color change or bruise after leaving for 24 hours at room temperature. The maximum clamping force was far less than the pressure limit on the transverse diameter of ripe papaya at the elastic deformation stage. Papaya mass and torque moment were correlated closely with transverse diameter, vertical diameter, stalk length and diameter of the twisted stalk. Mass multiple linear regression analysis achieved extremely significant level, and twist torque linear regression analysis reached significant level. There were good trend consistency between theoretical clamping forces and the measured clamping forces. The measured clamping forces were higher than theoretical values, but the maximum deviation was less than 20%.
Conclusion
The picking scheme can stably clamp papaya without mechanical damage. The papaya picking contact mechanics model is correct and practical. The research can provide a basis for designing papaya picking end-effector and controlling clamping force.
- papaya,
- picking test,
- end-effector,
- contact mechanics model

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References

[1]	郭文场, 丁向清, 周淑荣, 等.番木瓜的种植和开发利用[J].特种经济动植物, 2012(9):43-46. http://www.cnki.com.cn/Article/CJFDTOTAL-TZJD201209027.htm
[2]	刘思, 沈文涛, 黎小瑛, 等.番木瓜的营养保健价值与产品开发[J].广东农业科学, 2007(2):68-70. http://www.cnki.com.cn/Article/CJFDTOTAL-GDNY200702026.htm
[3]	苏伟强, 刘业强, 陆玉英, 等.番木瓜采后商品化处理技术[J].中国南方果树, 2006, 35(1):41-43. http://www.cnki.com.cn/Article/CJFDTOTAL-FRUI200601021.htm
[4]	蓝峰, 苏子昊, 黎子明, 等.果园采摘机械的现状及发展趋势[J].农机化研究, 2010, 32(11):249-252. doi: 10.3969/j.issn.1003-188X.2010.11.061
[5]	MYERS A L, KIRSCHBAUM W T, GILLESPIE B A, et al.Development and evaluation of a papaya harvesting aid[J].T ASAE(USA), 1977, 20(2):259-261.
[6]	廖建良.广东番木瓜产业发展的对策与建议[J].吉林农业科学, 2011(3):53-57. http://www.cnki.com.cn/Article/CJFDTOTAL-JLNK201103016.htm
[7]	杨培生, 钟思现, 杜中军, 等.我国番木瓜产业发展现状和主要问题[J].中国热带农业, 2007(4):8-9. http://www.cnki.com.cn/Article/CJFDTOTAL-ZGRD200704003.htm
[8]	LI P, LEE S, HSU H Y.Review on fruit harvesting method for potential use of automatic fruit harvesting systems[J].Procedia Engineering, 2011, 23:351-366. doi: 10.1016/j.proeng.2011.11.2514
[9]	YAGHOUBI S, AKBARZADEH N A, BAZARGANI S S, et al.Autonomous robots for agricultural tasks and farm assignment and future trends in agro robots[J].IJMME, 2013, 13(3):1-6.
[10]	PETERSON D L.Harvest mechanization progress and prospects for fresh market quality deciduous tree fruits[J].HortTechnology, 2005, 15(1):72-75.
[11]	SANDERS K F.Orange harvesting systems review[J].Biosyst Eng, 2005, 90(2):115-125. doi: 10.1016/j.biosystemseng.2004.10.006
[12]	李秦川, 胡挺, 武传宇, 等.果蔬釆摘机器人末端执行器研究综述[J].农业机械学报, 2008, 39(3): 175-179. http://www.cnki.com.cn/Article/CJFDTOTAL-NYJX200803045.htm
[13]	KONDO N, YATA K, IIDA M, et al.Development of an end-effector for a tomato cluster harvesting robot [J].Eng Agric Environ Food, 2010, 3(1):20-24. doi: 10.1016/S1881-8366(10)80007-2
[14]	钱少明, 杨庆华, 王志恒, 等.黄瓜抓持特性与末端采摘执行器研究[J].农业工程学报, 2010, 26(7): 107-112. http://www.cnki.com.cn/Article/CJFDTOTAL-NYGU201007021.htm
[15]	BLANES C, MELLADO M, ORTIZ C, et al.Review:Technologies for robot grippers in pick and place operations for fresh fruits and vegetables [J].Span J Agric Res, 2011, 9(4):1130-1141. doi: 10.5424/sjar/20110904-501-10
[16]	王涛, 艾星, 张喜瑞, 等.木瓜挤压破损力学特性研究[J].中国农机化学报, 2013, 34(5): 89-92. http://www.cnki.com.cn/Article/CJFDTOTAL-GLJH201305021.htm
[17]	BURKNER P F, KINCH D M.Force-deformation ratio as an index of papaya maturation [J].T ASAE, 1968, 11(3):437-440. doi: 10.13031/2013.39432
[18]	WANG J K, CHANG H.Mechanical properties of papaya and their dependence on maturity [J].T ASAE, 1970, 13(3):369-372. doi: 10.13031/2013.38611
[19]	翁树章, 张曙光, 罗启浩, 等.番木瓜[M].北京:中国农业出版社, 2002: 187-188.
[20]	陈健.番木瓜品种与栽培彩色图说[M].北京:中国农业出版社, 2002:1-6.
[21]	钱瑞明, 郑文纬.三指机器人手对物体的抓取[J].东南大学学报, 1992, 22(1): 16-22. http://www.cnki.com.cn/Article/CJFDTOTAL-DNDX199201002.htm
[22]	刘庆运.三灵巧手内力汇交多边形存在性判别算法[J].机械工程学报, 2009, 45(3): 119-123. http://www.cnki.com.cn/Article/CJFDTOTAL-JXXB200903019.htm
[23]	刘庆运, 岑豫皖, 谢能刚, 等.基于抓取稳定性的手指接触力规划算法[J].机械工程学报, 2010, 46(7):57-62. http://www.cjmenet.com.cn/Jwk_jxgcxb/CN/abstract/abstract125.shtml
[24]	莫海军, 黄平.基于最大力螺旋多指手抓取规划[J].机械工程学报, 2009, 45(3):258-262. http://www.cnki.com.cn/Article/CJFDTOTAL-JXXB200903043.htm

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