Non-linear correction of piezoelectric ceramics based on non-uniform rational B-spline
CHANG Li
LI Qing-bin
HUANG Ge-ge
XIU Guo-yi
Abstract：Aiming at the problem that the non-linear hysteresis characteristics of piezoelectric ceramics limit the increase in the positioning accuracy of two-stage large travel precision positioning system, the hysteretic characteristics were compensated with a non-uniform rational B-spline (NURBS) interpolation algorithm.In the process of realizing NURBS interpolation algorithm with MATLAB software, the NURBS interpolation algorithm and linear interpolation algorithm were used for the simulation and compared.The results show that the error of NURBS interpolation algorithm is obviously smaller than that of linear interpolation algorithm, which verifies the correctness, feasibility and practicability of NURBS interpolation algorithm for solving the non-linear problem of piezoelectric ceramics.In addition, the NURBS interpolation algorithm solves the establishment problem of the model for the non-linear hysteresis characteristic curves of piezoelectric ceramics, and the higher positioning accuracy can be realized under the premise that the accurate working table meets the requirement in the speed.
Keywords：piezoelectric ceramicaccurate positioning systemhysteresis characteristicNURBS interpolationchord errorfeed speederror compensationpositioning accuracy
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 183-187 )