公开(公告)号：US08035933B2

公开(公告)日：2011-10-11

申请号：US12444176

申请日：2007-10-10

申请人： Hee-Gyoun Lee ,  Gye-Won Hong ,  Kyeong Dal Choi ,  Seung Wook Lee

发明人： Hee-Gyoun Lee ,  Gye-Won Hong ,  Kyeong Dal Choi ,  Seung Wook Lee

IPC分类号： H01L39/24

CPC分类号： H01L39/20

摘要： Disclosed is the structure of a persistent current switch and a control method for the same. In the switch structure, a portion of a superconducting wire to be used as a switch is formed with slits such that the flow of current is controlled by the switch, to facilitate a transition between the superconducting state and the normal state of the superconducting wire. The structure of the persistent current switch includes a first slit longitudinally extending from a first point on one end of a superconducting wire to a second point and from a third point to a fourth point, the second, third, and fourth points being arranged sequentially in a longitudinal line, and second and third slits provided at opposite sides of a region between the second point and the third point where no first slit exists.

摘要翻译： 公开了持续电流开关的结构及其控制方法。 在开关结构中，用作开关的超导线的一部分由狭缝形成，使得电流的流动由开关控制，以促进超导状态和超导线的正常状态之间的转变。 持续电流开关的结构包括从超导线的一端的第一点向第二点纵向延伸的第一狭缝，从第三点到第四点，第二，第三和第四点依次布置在 纵向线，以及第二和第三狭缝，设置在第二点和第三点之间的不存在第一狭缝的区域的相对侧。

公开(公告)号：US20090105973A1

公开(公告)日：2009-04-23

申请号：US12043802

申请日：2008-03-06

申请人： Kyeong Dal CHOI ,  Ji Kwang Lee ,  Seung Wook Lee ,  Chan Park ,  Woo Seok Kim

发明人： Kyeong Dal CHOI ,  Ji Kwang Lee ,  Seung Wook Lee ,  Chan Park ,  Woo Seok Kim

IPC分类号： G01R19/00

CPC分类号： G01R15/202 ,  G01R19/0092

摘要： A noncontact method for measuring currents flowing through superconductive wires connected in parallel is provided. The method includes arranging hall sensors for measuring voltage levels based on magnetic fields generated around the superconductive wires, setting a matrix relation between the measured voltage values, values of currents flowing through the superconductive wires, and a variable matrix having variables defining relations between the voltage values and the current values, applying predetermined current levels to the superconductive wires a number of times and measuring voltage values through the hall sensors, substituting the predetermined current values and the measured voltage values into the matrix relation to calculate the variables of the variable matrix, and substituting the calculated variable matrix and unknown voltage values, measured by the hall sensors when unknown currents flow through the superconductive wires, into the matrix relation to calculate values of the unknown currents flowing through the superconductive wires.

摘要翻译： 提供了用于测量流过并联连接的超导线的电流的非接触方法。 该方法包括：布置霍尔传感器，用于基于在超导线周围产生的磁场测量电压电平，设定测得的电压值之间的矩阵关系，流过超导导线的电流值，以及具有变量的可变矩阵，该变量定义了电压 值和电流值，将预定电流电平施加到超导线数次，并通过霍尔传感器测量电压值，将预定电流值和测量电压值代入矩阵关系中，以计算可变矩阵的变量， 并且将未知电流通过超导线流过霍尔传感器测量的计算的可变矩阵和未知电压值代入矩阵关系，以计算流过超导线的未知电流的值。

公开(公告)号：US06983034B2

公开(公告)日：2006-01-03

申请号：US10780916

申请日：2004-02-17

申请人： Ge Wang ,  Seung Wook Lee

发明人： Ge Wang ,  Seung Wook Lee

IPC分类号： A61B6/00

CPC分类号： G06T11/006 ,  A61B6/027 ,  A61B6/583 ,  G01N23/046 ,  G01N2223/419 ,  G06T2211/436 ,  Y10S378/901

摘要： An image of an object is reconstructed in a three-dimensional coordinate system in an x-ray computed tomography system. A partial scan of the object is performed by rotating an x-ray beam having a cone beam geometry around a portion of the object or rotating the object in the cone-beam. The x-ray beam forms on a scanning trajectory through a plurality of projection lines from a plurality of successive focal point locations. The scanning trajectory may be substantially circular, helical, spiral, or spiral-like. The x-ray beam, attenuated by the object during the spiral scan, is detected to produce detector values. The detector values are integrated along straight lines on the detector plane to obtain intermediate data. Three-dimensional Radon values representing approximate plane integrals of the object are calculated from the intermediate data using a Grangeat relationship or a modified or extended version or the Grangeat relationship. The calculated and estimated Radon values are then reconstructed into an image volume according to the Radon inversion formula.

摘要翻译： 在X射线计算机断层摄影系统中的三维坐标系中重建对象的图像。 通过旋转具有围绕物体的一部分的锥形光束几何形状的X射线束或者在锥形束中旋转物体来执行物体的部分扫描。 X射线束通过来自多个连续焦点位置的多条投影线在扫描轨迹上形成。 扫描轨迹可以是大致圆形，螺旋状，螺旋状或螺旋状。 在螺旋扫描期间由物体衰减的X射线束被检测以产生检测器值。 检测器值沿检测器平面上的直线积分，以获得中间数据。 使用Grangeat关系或修改或扩展版本或Grangeat关系从中间数据计算表示对象的近似平面积分的三维Radon值。 然后根据Radon倒置公式将计算和估计的Radon值重建为图像体积。