COMPENSATION METHOD BASED ON FORMULARIZING HYSTERESIS OF PIEZOELECTRIC TUBE SCANNERS

Based on a circular are scanning model and the formularizing of hyster esis curves of piezoelectric tubes, a three-dimensional scanning model of piezoelectric tubes is presented and used to compensate distortion s of measured images scanned by a piezoelectric tube. This model-based compensation method can correct three-dimensional distortions simulta neously with two key parameters which are obtained just by measuring v ertical deformation-voltage characteristics of the piezoelectric tube. Experiments showing the effectiveness of this method are also discuss ed in this article. (C) 1996 American Institute of Physics.