Small Size Ultrasonic Piezoelectric Actuator for 2DOF Positioning
P. Vasiljev, S. Borodinas, Lithuanian University of Educational Sciences, Vilnius, Lithuania,
D. Mazeika, Vilnius Gediminas Technical University, Vilnius, Lithuania
Y. Yang, C. Zhao, Nanjing University of Aeronautics and Astronautics, Nanjing, China
A new ultrasonic piezoelectric actuator for object positioning in a plane has been developed. Actuator has small size and simple design. It consists of a ring type bimorph stator and four carbon fiber beams. Electrodes of piezoceramic ring are divided into four equal sectors. Carbon fiber beams are glued to the stator and are used to move object in two perpendicular directions in the plane or to achieve a curvilinear or rotational motion of the positioned object. Actuator can be used to rotate a sphere about three perpendicular axes as well. Out-of-phase harmonic signals are used for excitation. Configuration of electrodes allows to use different excitation schemes of the actuator by varying an input voltage amplitude and phase. Standing or travelling wave vibrations of the actuator can be achieved and different moving trajectories of the positioning object can be realized.
ACTUATOR 2014 Manuscript Poster 44
Publication date: 10/04/2015
Manuscript Poster 44 published in Conference Proceedings ACTUATOR 2014
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