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Magnetic field characteristics analysis and performance test of seeding element with non-axisymmetric magnetic

机译:非轴对称磁晶种的磁场特性分析和性能测试

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Traditional magnetic precision seeding element is a single cylindrical magnet,and it generates axisymmetric magnetic field,therefore the magnetic force that the magnetic powder coated seeds suffered in the symmetrical position is equal,and it's magnetic force deviation is zero.Studies showed that this kind of seeding elements easily adsorbed multiple seed in the symmetrical position,resulting multiple index increased.In order to increase the magnetic force deviation between seeds and reduce the multiple indexes,this paper put forward a new magnetic seeding element which was added a bias magnet in the main magnets,producing non-axisymmetrie magnetic field.The magnetie field characteristics of the two kinds of seeding dement were analyzed in the seed-metering space by using the method of the magnetic field finite element.The analysis showed that the non-axisymmetric magnetie seeding element can increased the magnetic force deviation in the symmetrical position.The comparison tests of seed-metering performance also showed that the non-axisymmetrie magnetic seeding element can significantly reduced the multiple index and reduced 4%compared with the axisymmetric magnetic seeding element.%传统磁吸式精密播种机所采用的排种元件是单个的圆柱形磁体,产生的磁场是轴对称的,因此处于对称位置的磁粉包衣种子所受磁吸力相等,磁力差为零.研究发现这类排种元件容易吸附到处于对称位置的多粒种子,导致重播率增加.为提高磁粉包衣种子间的磁力差、降低重播率,该文提出一种能够在排种空间中产生非轴对称磁场的磁力排种元件,所设计的排种元件采用添加磁场偏置永磁体的方法来使磁场成为非轴对称的.通过磁场有限元分析的方法对两类排种元件在排种空间里的磁场特性进行分析.分析表明,该非轴对称磁场的磁场能够增加磁场中对称位置的磁场力差.排种性能对比试验也表明非轴对称磁场排种元件相对于轴对称磁场排种元件能够降低4%的重播率.
机译:传统的磁性精密播种元件是单个圆柱磁体,并产生轴对称磁场,因此在对称位置上涂有磁粉的种子所受的磁力是相等的,并且磁力偏差为零。种子元素在对称位置容易吸附多个种子,导致多个指标增加。为了增加种子之间的磁力偏差并降低多个指标,本文提出了一种新型的磁性种子​​元素,该元素在主磁场中增加了偏置磁铁。利用磁场有限元的方法对两种播种在播种计量空间中的磁场特性进行了分析。分析表明,非轴对称磁性播种元素可以增加对称位置的磁力偏差。 d计量性能还显示,与轴对称磁播种元素相比,非轴对称磁播种元素可以显着降低多重指数并减少4%。形变量,产生的磁场是轴对称的,因此对称位置的磁粉包衣种子所受的磁吸力力,磁力差为零。重播率增加。为提高磁粉包衣种子间的磁力差,降低重播率,该文提出一种能够在排种空间中产生非轴对称磁场的磁力排种元件,所设计的排种元件采用添加的磁场通过磁场有限元分析的方法对两类排种元件在排种空间里的磁场特性进行分析。分析表明,该非轴对称磁场的磁场能够增加磁场中对称位置的磁场力差。排种性能对比试验也表明非轴对称磁场排种元件相对于轴对称磁场排种元件能够降低4%的重播率。

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