Rotary drive work in the first-order bending mode, the use of square wave excitation, piezoelectric dual-chip oscillator bending deformation, Rotary Actuators rotation around the rotation axis. Asymmetric inertia piezoelectric rotary drive due to the existence of poor piezoelectric on the left and right sides of the dual-chip, so that the drive is the reverse rotation of the different steps to form directional movement. The asymmetric inertial piezoelectric rotary actuator and the variable friction inertia piezoelectric rotary actuator were tested. At the frequency of 8 Hz, the rotation step of the driver was changed with the voltage
As the voltage increases, the steps of both drives increase. Among them, when the frequency is 8 Hz, the voltage is 10 ~ 100 V, the asymmetric inertia piezoelectric rotary drive rotation step is greater than the friction force inertia piezoelectric rotary drive.
When the frequency of the square wave signal is 8 Hz and the voltage is 100 V, the two drives are tested and tested to observe the retraction rate of the rotation step of the drive. Through the processing of the test data, the frequency of non-symmetrical inertia piezoelectric rotary drive and variable friction force of the piezoelectric rotation of the retreat rate with time curve, Rotary Actuators when the voltage increases to 100 V, the asymmetric inertia The retraction rate of the piezoelectric rotary actuator is 73.19%, and the retraction rate of the frictional inertial motion rotary actuator is 65.67%
Select the frequency of 8 Hz, the voltage of 40 V square wave signal, respectively, the two drives of the rotation step test test to draw the drive at 10 steps when the rotation of the displacement curve, Rotary Actuators and the rotation step of the linearity of the analysis.
Linearization and regression analysis of the data. The R2 value is obtained by linear fitting and the fitting curve is obtained. The R2 value is 0.998 79 and the variable friction force is 0.990 94. It can be seen that the linear fit is good. The sum of squares of residuals of the rotation step is obtained by regression analysis, where the square sum of the asymmetric residuals is 0.031 and the residual sum of the frictional forces is 0.069. In summary, Rotary Actuators it is shown that the linearity of the rotational step of the asymmetric piezoelectric rotary actuator is better than that of the frictional force.
Rotary drives are suitable for our full range of rotating motors and linear positioning systems, providing precise and powerful functions such as precise control and torque optimization.