Optimal Electrodes Configuration of Piezodrives

This paper presents a study of optimisation of the electrodes dislocation of piezodrives. The following conditions of optimisation problem are considered: to unify excitation voltage forms, to achieve reverse motion and maximum coefficient of efficiency. Realisation of this requirement means that current source has to generate voltage of constant frequency, amplitude and phase, reverse motion must be achieved only through changing the polarity of the current source and that the surface of the piezodrive is fully covered with electrodes. FEM modelling is performed in calculating process. The results of calculations for the piezoelectric drive are shown for two options of fixing conditions.