抄録
We have proposed a new electromagnetic micro-motor, in which a vibration excited on a magnet is converted into a rotary movement through a frictional force. This paper describes its basic properties and a trial fabrication for improvement of the torque. First, we fabricated and tested a motor whose stator was an air coil. The revolution speed showed a strong dependence of the excitation frequency. The starting torque was as small as 1.3×10-5Nm. Next, we tried to increase the torque by increasing the attractive force of the rotor. An improved motor using a ferrite core exhibited the maximum torque of 2.5×10-4Nm.
