2018 Volume 26 Issue 2 Pages 280-285
Recently, image quality deteriorations due to vibrations have become a problem in an autonomous system. A lens-unit swing system which consists of a lens and an imaging device is a kind of image stabilization technologies that generate an inverse motion against camera shakes. This system can correct an image from camera shakes over wide rotation ranges around three axes. However, this system has some problems such as an increase in size and weight. In order to solve these problems, we proposed a novel three-degree-of-freedom actuator for image stabilization. In this paper, we create a dynamic model for the actuator. The motion equation and state equation are derived by Lagrangian method. The validity of the dynamic model is investigated by the comparison of dynamic analyses using 3-D finite element method. In addition, the optimal servo system is designed using the dynamic model, and the effectiveness of the dynamic modeling method is verified.
