| 喷播机喷筒摆动频率的优化及试验 |
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| 引用本文： | 张 云,范春茂,陈 智,王健威.喷播机喷筒摆动频率的优化及试验[J].农业工程学报,2013,29(7):24-29. |
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| 作者姓名： | 张 云 范春茂 陈 智 王健威 |
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| 作者单位： | 内蒙古农业大学机电工程学院,呼和浩特 010018;内蒙古农业大学机电工程学院,呼和浩特 010018;内蒙古农业大学机电工程学院,呼和浩特 010018;内蒙古农业大学机电工程学院,呼和浩特 010018 |
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| 基金项目： | 国家自然科学基金项目"灌草带状配置修复退化草地工程尺度及其抗风蚀机理研究"（41161045）; 内蒙古自治区应用技术研究与开发资金计划项目"基于灌草带状配置的退化草地工程修复技术研究与示范"（20110518） |
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| 摘 要： | 喷播机的落种范围存在重播区和漏播区,严重影响喷播均匀性。喷播均匀性受落种带宽、喷播机作业速度、喷筒摆动频率的影响,喷筒摆动频率是主要影响因素。为了提高喷播均匀性,该文利用Matlab软件以重漏播总面积最小为目标,对喷筒摆动频率进行了优化,得出在喷播包衣冰草种,单向喷幅外径20 m,单向喷幅内径9 m,前进速度为3 m/s时,喷筒最优摆动频率为9.5 min-1。通过喷播试验验证了优化程序的可靠性,由程序计算出不同作业速度下对应的最优摆动频率。该研究可为喷播机的设计提供参考。
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| 关 键 词： | 优化 试验 种子 喷播机 摆动频率 Matlab |
| 收稿时间： | 2012/10/23 0:00:00 |
| 修稿时间： | 2013/2/21 0:00:00 |
Optimization and experiment of spray cylinder swing frequency for spray seeding machine |
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| Zhang Yun,Fan Chunmao,Chen Zhi and Wang Jianwei.Optimization and experiment of spray cylinder swing frequency for spray seeding machine[J].Transactions of the Chinese Society of Agricultural Engineering,2013,29(7):24-29. |
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| Authors: | Zhang Yun Fan Chunmao Chen Zhi and Wang Jianwei |
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| Abstract: | Abstract: The spray seeding machine use the principle of pneumatic conveying to make the seeds spray through the spray cylinder. The spray cylinder is doing a 0°-180° circumference swing in a uniform linear motion complying with the machine. So, the trajectory of the seed falling on the ground is trochoid. In this way of seed spraying, some areas are sprayed with seeds repeatedly while other areas are missed completely. This seriously affects the uniformity of the seeding. The area which is seeded repeatedly and that which is missed are affected by the sprayer's seeding width, the moving speed of the spray seeding machine, and the swing frequency of the spray cylinder. The swing frequency of the spray cylinder is the main factor, while the other two factors are restricted. So we take the smallest total area of repeated seeding and missed seeding as the objective function to optimize the spray cylinder swing frequency by Matlab GUI. Thus, the program reads the parameters from the text box and calculates the repeated and missed areas and the total area using the numerical integration method and saves them in a matrix, each corresponding to the different swing frequencies. Then the minimum total area and the corresponding swing frequency is found from the matrix. The result is that the optimal swing frequency is 9.5 min-1 when the moving speed is 3 m/s, the spray's outside radius is 20 m and the inside radius is 9 m. The program is correct and workable after the experimental verification. So we calculated the optimal swing frequencies corresponding to different moving speeds. This study provides a theoretical basis for spray seeding machine designing. |
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| Keywords: | optimization experiments seed spray seeding machine swing frequency MATLAB |
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