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Determination of Vibration Picking Parameters of Camellia oleifera Fruit Based on Acceleration and Strain Response of Branches

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Listed:
  • Delin Wu

    (School of Engineering, Anhui Agricultural University, Hefei 230036, China)

  • Enlong Zhao

    (School of Engineering, Anhui Agricultural University, Hefei 230036, China)

  • Dong Fang

    (School of Engineering, Anhui Agricultural University, Hefei 230036, China)

  • Shan Jiang

    (School of Engineering, Anhui Agricultural University, Hefei 230036, China)

  • Cheng Wu

    (School of Engineering, Anhui Agricultural University, Hefei 230036, China)

  • Weiwei Wang

    (School of Engineering, Anhui Agricultural University, Hefei 230036, China)

  • Rongyan Wang

    (School of Engineering, Anhui Agricultural University, Hefei 230036, China)

Abstract

This study examines the means of reducing the damage to the branches of Camellia oleifera in the process of vibration picking and solving the problems of low equipment-development efficiency and slow product renewal caused by using traditional test methods to determine vibration picking parameters. In this study, the optimal vibration parameters were determined by using the self-response (branch acceleration and strain) law of the Camellia oleifera tree, and finite element analysis and experiments are used to solve this problem. The 3D model of Camellia oleifera was built by Solidworks. The natural frequencies of Camellia oleifera were analyzed by modal analysis, the vibration frequency and amplitude were determined by harmonic response analysis, and transient analysis was used to compare with the test results. The results show that the optimal vibration frequency range of Camellia oleifera is 4~10 Hz, and the average correlation coefficient between the maximum synthetic acceleration and the simulated value is 0.85, which shows that the model can reliably predict the vibration response. At the same time, the best vibration parameters were determined to be 9 Hz, 60 mm and 10 s. Under these parameters, the abscission rate of the Camellia oleifera fruit was 90%, and the damage rate of the flower bud was 13%. The mechanized picking effect of Camellia oleifera fruit was good. This study can quickly determine the vibration picking parameters of Camellia oleifera fruit and effectively improve the development speed of vibration picking of Camellia oleifera fruit.

Suggested Citation

  • Delin Wu & Enlong Zhao & Dong Fang & Shan Jiang & Cheng Wu & Weiwei Wang & Rongyan Wang, 2022. "Determination of Vibration Picking Parameters of Camellia oleifera Fruit Based on Acceleration and Strain Response of Branches," Agriculture, MDPI, vol. 12(8), pages 1-18, August.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:8:p:1222-:d:887921
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    References listed on IDEAS

    as
    1. Jian Zhao & Satoru Tsuchikawa & Te Ma & Guangrui Hu & Yun Chen & Zhiwei Wang & Qingyu Chen & Zening Gao & Jun Chen, 2021. "Modal Analysis and Experiment of a Lycium barbarum L. Shrub for Efficient Vibration Harvesting of Fruit," Agriculture, MDPI, vol. 11(6), pages 1-14, June.
    2. Coral Ortiz & Antonio Torregrosa & Sergio Castro-García, 2021. "Comparison of a Lightweight Experimental Shaker and an Orchard Tractor Mounted Trunk Shaker for Fresh Market Citrus Harvesting," Agriculture, MDPI, vol. 11(11), pages 1-10, November.
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    Cited by:

    1. Yanchun Yao & Xiaoke Li & Zihan Yang & Liang Li & Duanyang Geng & Peng Huang & Yongsheng Li & Zhenghe Song, 2022. "Vibration Characteristics of Corn Combine Harvester with the Time-Varying Mass System under Non-Stationary Random Vibration," Agriculture, MDPI, vol. 12(11), pages 1-16, November.

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