Abstract
An automatic electric power generator that utilizes self-excited rotation by vibration has been investigated as a power supply for information devices. The amount of electric power of a rotated type generator increases by using self excited rotation. In the theoretical analysis about self excited rotation that generate under the limited condition, we deterimined the control method of self excited rotation and established the judgment method of the possibility that self-excited rotation stops in transition. states such as impedance control that uses change of an electric damper. And we manufactured parameter variable generator to show the validity of impedance control. As an example of the optimal design, we selected the coil core of the generator applying the established method.
