Kinematic calibration of key parameters for novel rotary 3D printer
LIN Hengmao
ZHU Gaohan
ZHAO Donghua
GUO Weizhong
Abstract：[Objective]A kinematic calibration method was proposed for the self-developed novel rotary 3D printer to improve the end motion accuracy and solve the accuracy calibration problem of its nonlinear error model.[Methods]Firstly,the kinematic model was established and error analysis was carried out to determine the key parameters to be calibrated.Secondly,the nonlinear least-squares regression model was solved based on the L-M algorithm and the trust-region reflective least-squares algorithm to identify the key structural parameters.Then,cross-validation and important feature screening of parameters were completed by combining with the least absolute shrinkage and selection operator(LASSO)algorithm,and the effects of different algorithms on motion errors were compared.Finally,the prototype accuracy calibration test was carried out.[Results]The results show that the parameter compensation simulation effectively improves the end motion accuracy.The printing accuracy of the prototype is increased by 79.09%after calibration.The parameters identified by the L-M algorithm are closer to the actual parameters of the prototype,which provides a reference for the accuracy improvement of similar printing equipment.
Keywords：Kinematic calibrationParameter compensationRotary 3D printer
Publication Date：2026-06-30
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：11( 110-120 )