%0 Journal Article %J Mechatronics %D 2011 %T Hybrid charge control for stick–slip piezoelectric actuators %A Martin Špiller %A Zdeněk Hurák %I Elsevier %N 1 %P 100 - 108 %R 10.1016/j.mechatronics.2010.09.002 %U http://dx.doi.org/10.1016/j.mechatronics.2010.09.002 %V 21 %X

The article describes an analog electronic circuit for driving stick–slip piezoelectric linear actuators. The task for the amplifier is to provide a high-voltage asymmetric sawtooth-like signal and feed it into a capacitive load. Generation of excessive heat must be avoided while maximizing the slew rate. In order to guarantee a steady translation, the hysteretic behaviour of the piezoelectric material must be compensated. Combination of a charge control scheme with switching is proposed as an efficient solution. Laboratory experiments confirm the superiority of this tailored solution over other existing techniques based on versatile linear voltage amplifiers.

%8 February