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    • 16. 发明授权
    • Method for processing three-dimensional shape data
    • 三维形状数据处理方法
    • US5668894A
    • 1997-09-16
    • US277308
    • 1994-07-22
    • Seiji HamanoTakashi IchiyanagiTsuyoshi NomuraKouhei Hamamura
    • Seiji HamanoTakashi IchiyanagiTsuyoshi NomuraKouhei Hamamura
    • G01B11/24G01C3/06G06T5/30
    • G06T5/30G06T2200/04
    • A method for processing three-dimensional shape data includes steps of obtaining a plurality of point data along a surface of an object having a three-dimensional shape; taking out a point data from the obtained point data to be processed, approximating each specified number of point data in the to-be-processed point data adjacent the taken-out point data by a polynomial and then finding two unit vectors at the taken-out point data; finding an opening angle defined between the two found unit vectors; comparing the found opening angle with a predetermined threshold value of the opening angle, determining whether or not the found opening angle is not larger than the threshold value, and thinning the taken-out point data when the found opening angle is larger than the threshold value and not storing the taken-out point data in a storage unit, and leaving the taken-out point data without the thinning when the found opening angle is not larger than the threshold value and storing the taken-out point data in the storage unit.
    • 一种处理三维形状数据的方法包括沿着具有三维形状的物体的表面获得多个点数据的步骤; 从所获得的待处理点数据中取出点数据,通过多项式近似在取出点数据附近的待处理点数据中的每个指定数量的点数据,然后在采集点处找到两个单位向量, 出点数据; 找到在两个找到的单位向量之间定义的打开角度; 将所述发现的开度角与所述开启角度的预定阈值进行比较,确定所述求出的开度角是否不大于所述阈值,以及当所述求出的开度角大于所述阈值时,使所述取出点数据变薄 并且不将所取出的点数据存储在存储单元中,并且当所述发现的开启角度不大于所述阈值并且将所述取出点数据存储在所述存储单元中时,保留所述取出点数据而不变稀。
    • 17. 发明授权
    • Magnetic fluid cooling devices and power electronics assemblies
    • 磁流体冷却装置和电力电子组件
    • US08730674B2
    • 2014-05-20
    • US13316954
    • 2011-12-12
    • Ercan Mehmet DedeJaewook LeeTsuyoshi Nomura
    • Ercan Mehmet DedeJaewook LeeTsuyoshi Nomura
    • H05K7/20
    • F25B21/00F25B2321/0021H05K7/20927Y02B30/66
    • Magnetic fluid cooling devices and power electronic devices are disclosed. In one embodiment, a magnetic fluid cooling device includes a magnetic field generating device, a magnetic fluid chamber assembly, and a heat sink device. The magnetic field generating device includes a plurality of magnetic regions having alternating magnetic directions such that magnetic flux generated by the magnetic field generating device is enhanced on a first side of the magnetic field generating device and inhibited on a second side of the magnetic field generating device. The magnetic fluid chamber assembly defines a magnetic fluid chamber configured to receive magnetic fluid. The heat sink device includes a plurality of extending fins, and is thermally coupled to the magnetic fluid chamber assembly. Power electronic devices are also disclosed, wherein the magnetic fluid chamber may be configured as opened or closed.
    • 公开了磁流体冷却装置和功率电子装置。 在一个实施例中,磁流体冷却装置包括磁场产生装置,磁性流体室组件和散热装置。 磁场产生装置包括具有交变磁方向的多个磁性区域,使得由磁场产生装置产生的磁通在磁场产生装置的第一侧被增强,并且在磁场产生装置的第二侧被禁止 。 磁性流体室组件限定了构造成接收磁性流体的磁性流体室。 散热装置包括多个延伸翅片,并且热耦合到磁性流体室组件。 还公开了电力电子设备,其中磁性流体室可以被配置为打开或关闭。