Ha Yong H, Choi Kyung M, Han Byung H, Cho Min H, Lee Soo Y
Department of Biomedical Engineering, Kyung Hee University, Yongin, Kyungki, 446-701, Korea.
Annu Int Conf IEEE Eng Med Biol Soc. 2009;2009:6068-71. doi: 10.1109/IEMBS.2009.5334179.
We introduce a magnetic navigation of a small magnet using four stationary coils. We used a Maxwell gradient coil to get magnetic propulsion force and three Helmholtz coils to control the moving direction of the magnet in the magnetic navigation. Using a three-channel coil driver with output capacity of 320A, we performed magnetic navigation of a small NdFeB magnet with the size of 10 mm x 10 mm x 12 mm on a horizontal plane. When navigated with a slow speed of about 1 mm/s, the magnet kept track of any arbitrary navigational path. We expect the proposed magnetic navigation method can be easily incorporated into the system for human applications since it does not use any moving coils.
我们介绍了一种使用四个固定线圈对小磁体进行磁导航的方法。我们使用一个麦克斯韦梯度线圈来获得磁推进力，并使用三个亥姆霍兹线圈来控制磁体在磁导航中的移动方向。使用一个输出容量为320A的三通道线圈驱动器，我们在水平面上对尺寸为10mm×10mm×12mm的小型钕铁硼磁体进行了磁导航。当以约1mm/s的低速进行导航时，磁体能够跟踪任何任意的导航路径。我们期望所提出的磁导航方法能够很容易地集成到人类应用系统中，因为它不使用任何移动线圈。
