Fabrication of a magnetic drive unit for that moves in the same direction of the exciting magnetic field

This paper presents two kinds of drive units in which the axes of rotation are parallel to the exciting outer magnetic field. The first kind is a magnetic-pole type using a silicon steel sheet to provide radial components of field strength. The second kind is a paddle type using the vibration of an amorphous ribbon to induce rotational forces. The drive units were developed to improve the freedom of movement of sensing devices. By combining the developed units with the conventional ones, it will be possible to control the movement of devices freely by manipulating the external magnetic field. In this paper, the basic characteristics of the drive units and their applicability are discussed.