基于激光技术的复杂曲面3D打印精度控制研究

Research on 3D printing accuracy control of complexcurved surface based on laser technology

复杂曲面3D打印受到振荡因素的影响,导致精度不高,为了提高复杂曲面3D打印精度,提出基于激光技术的复杂曲面3D打印精度控制方法。根据3D打印区域的曲线演化速度进行边界轮廓检测,对初始轮廓不敏感性区域进行激光检测,在复杂曲面中引入外部能量项进行3D打印的小扰动稳定性控制,构建复杂曲面3D打印精度控制目标函数,采用线性规划模型进行复杂曲面3D打印过程中的收敛性测试和全局规划设计,引入激光技术进行打印过程中的误差反馈调节,结合模糊PID控制方法,实现复杂曲面3D打印精度控制优化设计。仿真结果表明,采用该方法进行复杂曲面3D打印精度控制的收敛性较好,抗扰动能力较强,提高了复杂曲面3D打印的控制精度和鲁棒性。

The 3D printing of complex curved surface is affected by oscillation factors,and the accuracy is not high.In order to improve the accuracy of 3D printing of complex curved surface,the controlling method based on laser technology is proposed.According to curve evolution speed of 3D printing area,carrying out laser detection in initial contour insensitivity area,introducing external energy terms in complex curved surface to carry out small interference stability control of 3D printing,and constructing a complex curved surface 3D printing precision control target function.By using linear programming model,the convergence test and the global-planning design of 3D printing process of complex curved surface are carried out,the error feedback adjustment in printing process is carried out by introducing laser technology.Combined with fuzzy PID control method,the control and optimization design of 3D printing precision of the complex curved surface is realized.The simulation results show that the convergence of 3D printing accuracy control of complex curved surface is good,the anti-disturbance ability is strong,the control accuracy and the robustness are improved.