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永磁體磁吸式排種器充種性能仿真與實(shí)驗(yàn)
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Simulation on Magnetic Precision Seed-metering Device
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    摘要:

    以圓柱形永磁體為磁力排種元件設(shè)計(jì)了永磁體磁吸式精密排種器。對其充種過程進(jìn)行分析，建立了充種動力學(xué)模型，并通過Matlab編程仿真分析了排種輪轉(zhuǎn)速,、充種角以及種子相對排種輪的摩擦因數(shù)對排種器充種率的影響，并確定了各參數(shù)的優(yōu)化組合。仿真表明,，充種率與排種輪轉(zhuǎn)速、充種角以及種子相對排種輪的摩擦因數(shù)呈S型,、指數(shù)型,、對數(shù)型關(guān)系,。在優(yōu)化的參數(shù)組合下進(jìn)行實(shí)驗(yàn)，其充種率可達(dá)97%,。

    Abstract:

    A kind of permanent magnetic precision seedmetering device was designed. The seeding component was a cylindrical permanent magnet. According to the working principles of the permanent magnetic precision seedmetering,，the model of seeds pickup process was established．A Matlab program based on this model was made. The influences of angular velocity, pickup angle, and relative coefficient of friction on pickup ratio were simulated and analyzed. Combination of optimal parameters was found. The relationship between pickup ratio and angular velocity, pickup angle, relative coefficient of friction were S type, exponential type and loglinear type. With the combination of optimal parameters, the pass percentage of seeding could reach to 97%.

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胡建平,王奇瑞,邵秀平.永磁體磁吸式排種器充種性能仿真與實(shí)驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(12):35-. Hu Jianping, Wang Qirui, Shao Xiuping. Simulation on Magnetic Precision Seed-metering Device[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(12):35-.

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