中文
Share
Share
中文
ISSN 2096-7217 CN 32-1887/S2
Quick Search
Citation Search
Site Search
Adv Search
Toggle navigation
JIAM
Organizer
Home
About
Journal Introduction
Editorial Board
Open Access Statement
Ethic Statement
Academic Misconduct
Browse
Just Accepted
Current Issue
Archive
Hot Papers
Special Issues
Most Cited
Most Viewed
Most Downloaded
Author Center
Online Submission
Guides for Authors
Review Process
Peer Review
Copyright Transfer Agreement
Charge and Remuneration
Download
Manuscript Review
Expert Review
Edit office
Editor in chief
Included
CNKI
WANFANG DATA
VIP
SUPERSTAR
Subscribe
RSS
Email Alert
Subscription
Contact Us
Contact Us
Advertisement
Article Result
Journals
Publication Years
Keywords
Search within results
((( Hua Li [Author]) AND 1[Journal]) AND year[Order])
AND
OR
NOT
Title
Author
Institution
Keyword
Abstract
PACS
DOI
Please wait a minute...
Choose
Download reference
EndNote
Reference Manager
ProCite
BibTeX
RefWorks
Show/Hide thumbnails
Select
Simulation and parameter optimization of seed metering device based on CFDDEMSimulation and parameter optimization of seed #br# metering device based on CFDDE#br#
Bohong Li, , , Hua Li, Xindan Qi, Xi Chen, , Yunlong Ma, Yongjian Wang
Journal of Intelligent Agricultural Mechanization (in Chinese and English) 2021, 2 (2): 26-41. DOI:
10.12398/j.issn.2096-7217.2021.02.004
Abstract
(
203
)
PDF
(3328KB)(
57
)
Knowledge map
Improving the precision of mechanized seeding is the key breakthrough in vegetable planting, which can save cost and increase the efficiency of seeding. In order to improve the seeding performance of seed metering device, the computational fluid dynamics and discrete element method (CFDDEM) coupling simulation technology was adopted to simulate the single factor performance of the seed metering device. Also, the movement characteristics of seeds under different suction nozzle structure and operation parameters were analyzed. In order to explore the best combination of parameters, the central composite design (CCD) was carried out by factoring the cone angle of suction nozzle, the angular velocity of seed plate, and the negative pressure and considering their effect on the two responses of the qualified index and the miss index. The variance analysis of the experimental results showed that the negative pressure had the most impact on the qualified index and the miss index, followed by cone angle of suction nozzle, and angular velocity of the seed plate. A parameterized mathematical model was then established to determine the parameter optimization region. Parameter optimization indicated that the qualified index of seeding was greater than 95% and the miss index was less than 2.5% at a cone angle of 50°, negative pressure in the range of 4.87-5.64 kPa, and an angular velocity in the range of 1.67-1.95 rad/s. The bench verification experiment further verified the accuracy of the parameter optimization results. The results of simulation and parameter optimization in this paper can provide reference for the development of seed metering device in the future.
Reference
|
Related Articles
|
Metrics
Select
Design and research of fuzzy expert system for water and fertilizer irrigation based on LabVIEW
*
Wenxin Jin, Feng Jin, Yonghua Liu, Dan Wu, Zhaohui Zhang
Journal of Intelligent Agricultural Mechanization (in Chinese and English) 2020, 1 (2): 65-69. DOI:
10.12398/j.issn.2096-7217.2020.02.009
Abstract
(
177
)
PDF
(2987KB)(
37
)
Knowledge map
The application of water fertilizer integrated nutrient liquid irrigation technology in agricultural production has freed traditional agriculture from the model of artificial experience water fertilizer irrigation. In order to achieve the efficient utilization of water fertilizer and other operating resources and improve the modern and unmanned level of facilities, this study is divided into parameters such as nutrient concentration, ambient temperature and ambient humidity for different growth cycles of crops. Use LabVIEW software fuzzy control toolbox to build fuzzy expert control system, and create a system control interface in this virtual platform, to achieve efficient, convenient, accurate, water-saving, fertilizer-saving modern and accurate irrigation effect.
Reference
|
Related Articles
|
Metrics
Select
Design and research of wind-solar complementary intelligent tea garden anti-frost system
*
Dan Wu, Yonghua Liu, Bin Luo, Wenxin Jin, Xiuzhen Chen, Zhijie Zhang
Journal of Intelligent Agricultural Mechanization (in Chinese and English) 2020, 1 (2): 61-64. DOI:
10.12398/j.issn.2096-7217.2020.02.008
Abstract
(
151
)
PDF
(2770KB)(
33
)
Knowledge map
The tea garden anti-frost machine is a kind of machinery that can effectively deal with the frost damage of the young tea leaves caused by the cold in the early spring of the tea garden. The traditional tea garden anti-frost machine uses diesel generators as power, and the daily shelving time is long. Today, when fossil fuels are increasingly scarce, continue The use of fossil fuels not only increases the investment of tea farmers, but also destroys the atmospheric environment and reduces the quality of tea. To address this issue, this paper uses wind-solar hybrid technology to replace fancy fuels to provide power for anti-frost fans. While solving the energy problem, an automatic start-stop device for the anti-frost machine under certain conditions was designed using PLC and touch screen. After field tests, it was found that the use of the wind-solar complementary intelligent tea garden anti-frost system can significantly improve the tea garden environment and the quality of tea leaves, saving tea farmers and creating economic benefits.
Reference
|
Related Articles
|
Metrics
Select
Seed movement characteristics and filling performance of seed metering device for baby bok choybased on CFD-DEM approach Seed movement characteristics and filling performance of seed metering device for baby bok choy based on CFD-DEM approach
*
Tong Hu, Xindan Qi, Hua Li , Song Yang, Yongjian Wang, Suyang Xu, Mingchao Bai
Journal of Intelligent Agricultural Mechanization (in Chinese and English) 2020, 1 (1): 32-43. DOI:
10.12398/j.issn.2096-7217.2020.01.005
Abstract
(
213
)
PDF
(1272KB)(
31
)
Knowledge map
To investigate the movement characteristics and filling performance of seeds in the working process of seed metering device, the movement characteristics of seed A which successfully completed the seeding process and seed B that dropped in advance during the working process were studied based on computational fluid dynamics and discrete element method (CFD-DEM) coupling approach. The analysis of seed velocity, compressive force and position were found that the movement characteristics of the two types of seeds in the process of moving to the leftmost side of the seed plate were basically the same. During the movement from the leftmost side of the seed plate to the positive pressure zone, the velocity and compressive force of the seed change greatly. The process was relatively unstable, and seeds were prone to fall early. The effects of seed agitator's rotational speed and seed layer thickness on seed filling performance were studied by single factor simulation test. The results showed that the seed filling performance was better when the seed agitator's rotational speed and seed layer thickness were 3 rad/s and between 35 and 40 mm respectively. The research results provided a reference for improving the structure and seed filling performance of seed metering device.
Reference
|
Related Articles
|
Metrics