基于变幅防堵筛分DEM模拟的BP神经网络物料分布预测模型

IF 2.2 2区 农林科学 Q2 AGRICULTURAL ENGINEERING International Journal of Agricultural and Biological Engineering Pub Date : 2023-01-01 DOI:10.25165/j.ijabe.20231604.7178
Zheng Ma, Yongle Zhu, Zhiping Wu, Souleymane Nfamoussa Traore, Du Chen, Licheng Xing
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引用次数: 0

摘要

联合收割机的进料变化容易造成振动筛的堆积和堵塞,严重影响收获作业。为了减轻振动筛表面的堆积和堵塞,选择改进的变幅筛分机构的导槽旋转角度作为目标变量,利用EDEM-RecurDyn模拟物料(米粒和秸秆混合物)在不同进料量(异常0.5 kg/s,正常0.2 kg/s)下变幅筛的防堵塞过程。设计了误差反向传播算法(BP)神经网络,建立了异常进料时不同溜槽角度下变筛面物料分布的预测模型。结果表明,随着导溜槽角度的增大,筛面前端物料堵塞的质量和时间不断降低。在导槽角度为20°-45°,调整时间为3-6 s时,将前端筛面堵塞堆积的物料移回栅格6进行筛分。但随着时间的推移,在40°-45°溜槽角度下,筛面物料不断回移,对筛分性能影响较大。在导槽角度为30°-35°,调整时间为4 s时,筛面物料均匀分布在1-6格中。这样可以减轻筛网表面材料的堆积和堵塞。确定筛面物料分布预测模型(BP神经网络)的R值为0.97,表明基于BP神经网络的筛面物料分布模型具有较高的可靠性和准确性。该工作为变幅智能控制筛面材料防堵提供了重要参考。关键词:变幅,物料分布,EDEM-RecurDyn, BP神经网络[DOI: 10.25165/ j.j ijabe.20231604.7178]引用本文:马忠,朱玉林,吴志鹏,Traore S N,陈东,邢立昌。基于变幅抗阻塞筛分DEM模拟的物料分布预测BP神经网络模型。农业与生物工程学报,2023;16(4): 191-200
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BP neural network model for material distribution prediction based on variable amplitude anti-blocking screening DEM simulations
The material feeding changing of combine harvester is easy to cause accumulation and blockage of the vibrating screen, which seriously affects the harvest operation. In order to alleviate such accumulation and blockages on the vibrating screen surface, the guide chute rotation angle of the improved variable amplitude screening mechanism was selected as the target variable, and EDEM-RecurDyn was employed to simulate the anti-blocking process of the variable amplitude under a changing feeding quantity (0.5 kg/s abnormal, 0.2 kg/s normal) of materials (rice grain and stem mixture). A BP (an error back propagation algorithm) neural network was designed and the prediction model of the material distribution was subsequently constructed on the variable screening surface under different chute angles during abnormal feeding. The results revealed a continuous decrease in the quality and time of the material blockage at the front end of the screen surface with the increasing guide chute angle. At the guide chute angle of 20°-45° and adjustment time of 3-6 s, the blocked and accumulated materials at the front-end screen surface was be moved back to Grid 6 for screening. However, overtime, the screen surface materials continued to move back under the chute angle of 40°-45°, which had a great impact on the screening performance. At the guide chute angle of 30°-35° and adjustment time of 4 s, the materials on the screen surface were evenly distributed in Grid 1-6. This was able to alleviate the accumulation and blockage of the screen surface materials. The R of the material distribution prediction model (BP neural network) on the screen surface was determined as 0.97, indicating the high reliability and accuracy of the material distribution model on the screen surface based on the BP neural network. This work provides an important reference for the variable amplitude intelligent control of screen surface material anti-blocking. Keywords: variable amplitude, material distribution, EDEM-RecurDyn, BP neural network DOI: 10.25165/j.ijabe.20231604.7178 Citation: Ma Z, Zhu Y L, Wu Z P, Traore S N, Chen D, Xing L C. BP neural network model for material distribution prediction based on variable amplitude anti-blocking screening DEM simulations. Int J Agric & Biol Eng, 2023; 16(4): 191-200
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来源期刊
CiteScore
4.30
自引率
12.50%
发文量
88
审稿时长
24 weeks
期刊介绍: International Journal of Agricultural and Biological Engineering (IJABE, https://www.ijabe.org) is a peer reviewed open access international journal. IJABE, started in 2008, is a joint publication co-sponsored by US-based Association of Agricultural, Biological and Food Engineers (AOCABFE) and China-based Chinese Society of Agricultural Engineering (CSAE). The ISSN 1934-6344 and eISSN 1934-6352 numbers for both print and online IJABE have been registered in US. Now, Int. J. Agric. & Biol. Eng (IJABE) is published in both online and print version by Chinese Academy of Agricultural Engineering.
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