| 油菜钵苗移栽机双五杆栽植机构多目标优化设计 |
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| 引用本文： | 廖庆喜,刘明峰,张 照,胡先朋.油菜钵苗移栽机双五杆栽植机构多目标优化设计[J].农业机械学报,2015,46(11):49-56. |
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| 作者姓名： | 廖庆喜 刘明峰 张 照 胡先朋 |
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| 作者单位： | 华中农业大学,华中农业大学,华中农业大学,华中农业大学 |
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| 基金项目： | 国家油菜产业技术体系专项资助项目（CARS-13）、中央高校基本科研业务费专项资金资助项目（2014PY033）和武汉市高新技术产业科技创新团队培养计划资助项目（2014070504020240） |
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| 摘 要： | 针对双五杆栽植机构结构复杂、参数多,用传统的解析法设计较为困难的实际问题,分析了油菜钵苗移栽机双五杆栽植机构的工作原理和运动特性,构建了该机构多目标优化设计模型,借助Matlab软件开展了多目标优化设计模型的求解和参数分析,并结合高速摄像技术开展了该机构多目标优化设计模型与实际轨迹一致性的验证。结果表明:机组前进速度为0.3 m/s、栽植频率为60株/min时,栽植株距和轨迹高度均为300 mm,入土轨迹与出土轨迹具有较高垂直度和重合度,栽植轨迹最低点鸭嘴器水平方向速度为0.04 m/s,接近零速栽植,满足油菜移栽要求。
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| 关 键 词： | 油菜 移栽机 双五杆栽植机构 多目标优化 高速摄像试验 |
| 收稿时间： | 2015/4/17 0:00:00 |
Multi-objective Optimization Design of Double Five-bar Transplanting Mechanism for Rape Pot Seedling |
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| Liao Qingxi,Liu Mingfeng,Zhang Zhao and Hu Xianpeng.Multi-objective Optimization Design of Double Five-bar Transplanting Mechanism for Rape Pot Seedling[J].Transactions of the Chinese Society of Agricultural Machinery,2015,46(11):49-56. |
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| Authors: | Liao Qingxi Liu Mingfeng Zhang Zhao and Hu Xianpeng |
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| Institution: | Huazhong Agricultural University,Huazhong Agricultural University,Huazhong Agricultural University and Huazhong Agricultural University |
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| Abstract: | In order to overcome the shortages of complex structure and too much parameters of double five-bar transplanting which are difficult to be solved by traditional analytical method, the working principle and kinematics model of rape pot seedling were analyzed. Also a multi-objective optimization design model was established. The calculation and parameter analysis were carried out with Matlab software. And the kinematics characteristics of double five-bar transplanting mechanism were analyzed, which matched with the solving results of the multi-objective optimization design model. The consistency verification experiment was carried out by high speed photography system. The result showed that both of transplanting spacing and locus height of the rape pot seedling transplanter were 300mm, with the forward speed of 0.3m/s and transplanting frequency of 60 seedlings per minute. The displacement between buried locus and unearthed locus was less than 0.91mm with the transplanting depth within the range of 60~100mm, which revealed the good verticality and coincidence between them. The horizontal velocity of duckbill-type planting unit was 0.04m/s at the lowest point of the transplanting locus, and the swinging angle was in the range of -2.3°~ 2.3° at planting stage, which were benefit for planting. In falling stage, the swinging angle of duckbill-type planting unit was in the range of -2.4°~2.2° and the vertical velocity was less than 0.7m/s, so that the vertical displacement was too small to catch the seedling for duckbill-type planting unit. The demands of rapeseed mechanized transplanting could be met with proposed method. |
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| Keywords: | Rape Transplanter Double five-bar transplanting mechanism Multi-objective optimization High speed photography experiment |
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