Abstract

Piezoelectrics are increasingly being used in a large number of research explorations and engineering applications. In industry, piezoelectrics are widely being accepted as sensors, giving engineers more leverage to add new features to their products. In recent years, for example, distributed piezoelectric sensors and actuators are widely used in active vibration control of structures or precision mechatronic and structronic systems. In this paper, a piezoelectric quad-morph based multiple degrees of freedom (DOF) end-effector is designed and its multi-DOF precision placement operation is analyzed. This new multi-DOF cantilever beam design consists of multiple piezoelectric rectangular rods glued together, which provides a way to accurately position the end in space. Detailed analysis of this advanced composite structure is carried out by the finite element method incorporating the piezoelectric actuations.

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