QU Dong-sheng, RONG Wei-bin, SUN Li-ning, XU Jing, CAI He-gao. Research on the control model of piezoelectric micropositioning actuator[J]. Editorial Office of Optics and Precision Engineering, 2002,(6): 602-607
QU Dong-sheng, RONG Wei-bin, SUN Li-ning, XU Jing, CAI He-gao. Research on the control model of piezoelectric micropositioning actuator[J]. Editorial Office of Optics and Precision Engineering, 2002,(6): 602-607DOI:
Two control models for piezoelectric actuators are introduced from different angles. Firstly
by means of statistic physical analysis
a simple and practical mathematic formula describing the hysteresis of a piezoelectric actuator built by a mathematic modeling method. Then
based on elastic deformation theory
a normalization model of piezoelectric/electrostrictive effect is introduced. Accordingly
the viewpoint that hysteresis can be greatly reduced by polarization control method was proved theoretically. Two experimental systems were designed and two control models tested
respectively. Some experimental results show that the models are effective in decreasing the error arising from nonlinear hysteresis. In this way the micropositioning control accuracy of piezoelectric actuators can be improved. As a result
the research is helpful to realize high precision open loop micropositioning controls based on piezoelectric actuators.
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references
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