외팔보 구조를 갖는 압전 액츄에이터 변위 개선 연구

Analysis of Tip Displacement of Cantilever-type Piezoelectric Actuators

This paper analyzes three cantilever-types of piezoelectric actuators of bimorph, unimorph and monomorph in same volume to maximize tip displacement. Tip displacement of each actuator is theoretically derived by using beam theory and numerically verified by FEM. It also investigates the tip displacements of each actuator due to the change of elastic layer. It shows that the piezoelectric actuator of bimorph generates the largest tip displacement among them.