A Study on Modeling of LD Movement and Measurement of Mass Center using Piezoelectric Element

압전소자를 이용한 레이저디스크 이동현상의 모델링과 질량중심의 위치결정에 관한 연구

Piezoelectric element is deformed by driving voltage pattern. We developed a device of moving LD(laser disk) to use the rapid deformation of piezoelectric element. If driving voltage is changed very rapidly, the difference of acceleration is accurred between spindle motor and LD. To move LD on turn table is attained by utilizing difference of acceleration. This paper describes theoretical and experimental results about the movement of LD and presents to measure the center of mass LD with unbalance force.