基于反馈控制的多材料零件3D打印精度提升方法

3D Printing Accuracy Improvement Method of Multi-material Parts Based on Feedback Control

目前3D打印精度提升方法存在打印精度低、打印效果差和校正所需时间长的问题,为此提出一种基于反馈控制的多材料零件3D打印精度提升方法。利用反馈控制算法消除开环操作带来的误差影响,进而控制打印位移平衡,并利用跟踪算法预测出零件的运动轨迹,由此得出零件产品的实际位移误差和旋转角度误差从而进行误差修正,最终对多材料零件进行重构,达到提升多材料零件3D打印精度的目的。实验结果表明:所提方法的打印精度高,打印效果好,校正所需时间短。

To solve the problems of low printing accuracy,poor printing effect and long correction time by present 3D printing accuracy improvement methods,a 3D printing accuracy improvement method of multi-material parts based on feedback control is proposed.By feedback control algorithm,the error influence caused by open-loop operation is eliminated to controll the printing displacement balance.Tracking algorithm is applied to predict the motion trajectory of the parts,so as to obtain the actual displacement error and rotation angle error of the parts and correct the error.The multi-material parts are reconstructed to improve the 3D printing accuracy of multi-material parts.The experimental results show that the proposed method has high printing accuracy,good printing effect and short correction time.