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基于單軸對稱特性的稻種定向排序仿真與試驗
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國家自然科學(xué)基金資助項目（50805134）、浙江省自然科學(xué)基金資助項目（LY12E05028）和浙江理工大學(xué)521人才培養(yǎng)計劃資助項目


Simulation and Test on Rice Seed Orientation Based on Single Axisymmetric Properties
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    摘要:

    根據(jù)稻種慣性特性及表面特性建立了歐拉動力學(xué)方程組，并利用Matlab對方程組進行數(shù)值仿真。結(jié)果表明，稻種繞x、y軸的轉(zhuǎn)動是無條件穩(wěn)定的，繞z軸的轉(zhuǎn)動是有條件穩(wěn)定的。分析了曲柄長度、曲柄角速度、導(dǎo)向板與稻種間摩擦因數(shù)、導(dǎo)向板傾角和振動板傾角等參數(shù)對稻種繞z軸轉(zhuǎn)動的影響。根據(jù)仿真分析結(jié)果研制了振動式排種器，通過正交試驗獲得了一組滿足z軸轉(zhuǎn)動穩(wěn)定性條件的較優(yōu)參數(shù)。試驗結(jié)果表明，在該參數(shù)下稻種定向率達89%，能滿足超級稻的播種要求。

    Abstract:

    According to inertial properties and surface characteristic of rice seed, Euler dynamical model was built. Matlab software was used to simulate the movement stability of the seeds. The numerical simulation results proved that rotation about x-axis and y-axis was unconditional stability, while rotation about z-axis was stable with some conditions. The effect of parameters on movement stability of rotation about z-axis, such as crank length, angular velocity, the friction coefficient between the rice seed and the guide plate, angle of vibrating board, and angle of guide plate, were analyzed. According to the results of simulation, through orthogonal experiment on fabricated device, a set of optimized parameters were obtained. Through experiments, above 89% embryo of rice seed were ordered.

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俞亞新,林佳輝,趙勻,鄭斌.基于單軸對稱特性的稻種定向排序仿真與試驗[J].農(nóng)業(yè)機械學(xué)報,2013,44(10):62-67,74. Yu Yaxin, Lin Jiahui, Zhao Yun, Zheng Bin. Simulation and Test on Rice Seed Orientation Based on Single Axisymmetric Properties[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(10):62-67,74.

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  • 在線發(fā)布日期: 2013-10-14
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