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Smart Materials Congress 2019
Nano Research and Applications
ISSN: 2471-9838
Page 34
August 01-02, 2019
Dublin, Ireland
Smart Materials and
Structures
8
th
International Conference on
Grazvydas Kazokaitis et al., Nano Res Appl 2019, Volume 05
Spherical piezoelectric drive
Grazvydas Kazokaitis
and
Vytautas Jurenas
Kaunas University of Technology, Lithuania
P
iezoelectric magnetic drive is a device which uses
two piezoelectric actuators for precise 3 degrees
of freedom (DOF) rotation of sphere-shaped rotor.
Mechanical part of this drive described further: sphere-
shaped rotor inserted between two piezoelectric
actuators. These ring-shaped piezoelectric actuators
have polarization in axial direction and one of the
electrodes is devided into three equal sectors. Each
segmented electrode is excited by separate harmonic
signal. All three electrodes can be excited independently
i.e. three channels generator is used to drive actuator.
Amplitude and duration of the applied signal depends
on rotation velocity and motion trajectory of the sphere.
The out-of-plane bending and radial vibrations of the
piezoelectric rings are excited to obtain elliptical motion
of the contacting points and to rotate magnetic sphere in
desired direction. In addition, it must be mentioned that
actuator can be driven by burst type signal in order to
achievepositioningofthespherewithveryhighresolution.
Described system could be used for applications, where
precise 3 DOF rotational control of the sphere-shaped
rotor is needed. Few examples of such applications:
space and attitude control of the satellites, laser beam
control, precise mirror deflectors and etc.
Recent Publications
1. Bansevičius, RamutisPetras,MažeikaDalius,
Jūrėnas Vytautas, Kulvietis Genadijus and
Bakanauskas Vytautas (2016) Development
oftravelingwaveactuatorsusingwaveguides
of different geometrical forms. Shock and
Vibration. New York: Hindawi publishing
corporation. 2016 (4101062):1-9.
2. Grybas Ignas, Bansevičius Ramutis Petras,
Jūrėnas Vytautas, Bubulis Algimantas,
Janutėnaitė Jūratė and Kulvietis Genadijus
(2016) Ultrasonic standing waves-driven
high resolution rotary table. Precision
engineering. New York, NY: Elsevier. 45:396-
402.
3. Sakalys Rokas, Janusas Giedrius, Palevicius
Arvydas, Cekas Elingas, Jurenas Vytautas
and Sodah Amer (2016) Microstructures
replication using high frequency excitation.
Microsystem technologies. Berlin: Springer.
22(7):1831-1843.
4. OstaseviciusVytautas,MarkeviciusVytautas,
Jūrėnas Vytautas, ŽilysMindaugas, Čepėnas
Mindaugas and Kižauskienė Laura Gylienė
Virginija (2015) Cutting tool vibration energy
harvesting for wireless sensors applications.
Sensors and actuators A: Physical.
Lausanne: Elsevier. 233:310-318.