When sowing summer corn without tillage,it is necessary to ensure that the furrow opener is free from straw congestion and that the spacing of the sowing can be adjusted according to the breeds of corn and the preset ...When sowing summer corn without tillage,it is necessary to ensure that the furrow opener is free from straw congestion and that the spacing of the sowing can be adjusted according to the breeds of corn and the preset seeding rate per acre.On the basis of the structural features of newly developed no-tillage corn fertilizers,an intelligent fuzzy monitoring system for corn planters was developed in this study.The system facilitates automatic control of the spacing adjustment and the status monitor for the fertilizer tank,seed tank,and seeding orifice.According to the preset number of rows,line spacing,number of plants per acre,and seed germination rate,the control rate can be calculated through designing in surveillance software.The control rate is output to the fuzzy controller through the digital output module of the CAN bus.Fuzzy control is applied to the DC motor for stepless adjustment of the spacing.A system for video surveillance of the working status of a planter is developed for displaying a real-time video image of the planter operation and achieving an anti-congestion status monitoring of a no-tillage planting operation in a dusty environment.Through field trials,the detection accuracy was 91.4%.The seed-clogging fault-alarm accuracy was 96.0%.The entire system remained stable and reliable.展开更多
The application of plastic mulch in the arid regions of northwest China has demonstrated significant advantages,making roller-type hole sowing on mulch a key agricultural trend.In order to enhance the performance of a...The application of plastic mulch in the arid regions of northwest China has demonstrated significant advantages,making roller-type hole sowing on mulch a key agricultural trend.In order to enhance the performance of a roller-type corn finger planter equipped with finger pickups.This study analyzed the motion patterns of corn seeds within the device and investigated the effects of control cam parameters,including pickup section,vibration section,pickup stroke angle,and torsion spring force,on seed-metering performance.Using DEM-MBD coupling technology,single-factor experiments and secondorder orthogonal rotational combination simulation experiments were conducted.The optimal parameter is that pickup section stroke angle is 78.98°,vibration section stroke angle is 20.07°,and a normal force is 2.99 N,which was validated through bench tests,achieving a seed-metering qualification rate of 93.86%,a missed seeding rate of 3.19%,and a reseeding rate of 2.95%.These results met the standards and agronomic requirements,demonstrating the effectiveness of the proposed optimization method.It provides a foundation for improving the precision and reliability of roller-type corn seed-metering devices.展开更多
为解决北方寒区玉米机收秸秆粉碎覆盖大垄原茬地免耕播种时易发生堵塞及地温回升较慢的问题,设计了一种大垄玉米原茬地免耕播种机的防堵装置。通过理论分析,设计了防堵装置关键部件,初步得到了该装置的结构和作业参数。应用三因素三水...为解决北方寒区玉米机收秸秆粉碎覆盖大垄原茬地免耕播种时易发生堵塞及地温回升较慢的问题,设计了一种大垄玉米原茬地免耕播种机的防堵装置。通过理论分析,设计了防堵装置关键部件,初步得到了该装置的结构和作业参数。应用三因素三水平正交试验方法和模糊综合评价分析法,以机组作业速度、清秸刀齿总成转速、清秸刀齿总成回转轴垂直面与机具前进方向的夹角为试验因素,以根茬清除率、秸秆清除率、防堵装置当量功耗为评价指标,对影响防堵装置性能的结构与作业参数进行了试验与优化研究。结果表明:在试验条件和试验因素水平范围内,影响多目标函数的参数优化组合为机组作业速度5.4 km/h、清秸刀齿总成转速440 r/min、清秸刀齿总成回转轴垂直面与机具前进方向的夹角20°,此时,根茬清除率为93.94%,秸秆清除率为95.39%,防堵装置当量功耗为4.36 k W,土壤扰动量为31.9%。展开更多
基金This research was funded by Program Sub-topic of the National 12th Five-Year Plan Science and Technology Supporting Project(No.2011BAD20B09-02)Shandong Province Excellent Youth Scientists Research Reward Funding(No.BS2010NY014).
文摘When sowing summer corn without tillage,it is necessary to ensure that the furrow opener is free from straw congestion and that the spacing of the sowing can be adjusted according to the breeds of corn and the preset seeding rate per acre.On the basis of the structural features of newly developed no-tillage corn fertilizers,an intelligent fuzzy monitoring system for corn planters was developed in this study.The system facilitates automatic control of the spacing adjustment and the status monitor for the fertilizer tank,seed tank,and seeding orifice.According to the preset number of rows,line spacing,number of plants per acre,and seed germination rate,the control rate can be calculated through designing in surveillance software.The control rate is output to the fuzzy controller through the digital output module of the CAN bus.Fuzzy control is applied to the DC motor for stepless adjustment of the spacing.A system for video surveillance of the working status of a planter is developed for displaying a real-time video image of the planter operation and achieving an anti-congestion status monitoring of a no-tillage planting operation in a dusty environment.Through field trials,the detection accuracy was 91.4%.The seed-clogging fault-alarm accuracy was 96.0%.The entire system remained stable and reliable.
基金financially supported by the Fuxi Young Talent Cultivation Project of Gansu Agricultural University(Grant No.gaufx-05y02)National Natural Science Foundation of China(Grant No.52365030)The Science and Technology Innovation Fund of Gansu Agricultural University-Young Mentor Support Fund Project(Grant No.GAUQDFC-2024-06)。
文摘The application of plastic mulch in the arid regions of northwest China has demonstrated significant advantages,making roller-type hole sowing on mulch a key agricultural trend.In order to enhance the performance of a roller-type corn finger planter equipped with finger pickups.This study analyzed the motion patterns of corn seeds within the device and investigated the effects of control cam parameters,including pickup section,vibration section,pickup stroke angle,and torsion spring force,on seed-metering performance.Using DEM-MBD coupling technology,single-factor experiments and secondorder orthogonal rotational combination simulation experiments were conducted.The optimal parameter is that pickup section stroke angle is 78.98°,vibration section stroke angle is 20.07°,and a normal force is 2.99 N,which was validated through bench tests,achieving a seed-metering qualification rate of 93.86%,a missed seeding rate of 3.19%,and a reseeding rate of 2.95%.These results met the standards and agronomic requirements,demonstrating the effectiveness of the proposed optimization method.It provides a foundation for improving the precision and reliability of roller-type corn seed-metering devices.
文摘为解决北方寒区玉米机收秸秆粉碎覆盖大垄原茬地免耕播种时易发生堵塞及地温回升较慢的问题,设计了一种大垄玉米原茬地免耕播种机的防堵装置。通过理论分析,设计了防堵装置关键部件,初步得到了该装置的结构和作业参数。应用三因素三水平正交试验方法和模糊综合评价分析法,以机组作业速度、清秸刀齿总成转速、清秸刀齿总成回转轴垂直面与机具前进方向的夹角为试验因素,以根茬清除率、秸秆清除率、防堵装置当量功耗为评价指标,对影响防堵装置性能的结构与作业参数进行了试验与优化研究。结果表明:在试验条件和试验因素水平范围内,影响多目标函数的参数优化组合为机组作业速度5.4 km/h、清秸刀齿总成转速440 r/min、清秸刀齿总成回转轴垂直面与机具前进方向的夹角20°,此时,根茬清除率为93.94%,秸秆清除率为95.39%,防堵装置当量功耗为4.36 k W,土壤扰动量为31.9%。
基金the National Science & Technology Support Program inthe 12th Five-Year Plan of China (No.2011BAD20B09-10)The Fundamental Research Funds for the Central Universities (No.2012QJ118)
