砂型打印供墨压力的模糊PID控制研究  

Research on Fuzzy PID Control of Ink Supply Pressure for Sand Mold Printing

作　　者：时皓铭 单忠德 郭智 王怡飞 SHI Haoming;SHAN Zhongde;GUO Zhi;WANG Yifei(State Key Laboratory of Advanced Forming Technology and Equipment,China Academy of Machinery Science and Technology Group Co.,Ltd.,Beijing 100083;Nanjing University of Aeronautics and Astronautics,Nanjing 210016)

机构地区：[1]机械科学研究总院集团有限公司先进成形技术与装备国家重点实验室,北京100083 [2]南京航空航天大学,南京210016

出　　处：《现代制造技术与装备》2021年第3期1-5,共5页Modern Manufacturing Technology and Equipment

基　　金：国家杰出青年科学基金资助项目(51525503);国家轻量化材料成形技术及装备创新中心基金项目(111902Q-DZC)。

摘　　要：在砂型3D打印过程中,供墨系统是保证砂型3D打印机高质量打印的重要组成部件。针对目前供墨系统对喷头喷嘴处压力调控存在滞后性、随机性等问题,设计自调整模糊PID控制器,可在不同工作点实时调节PID参数,实现喷嘴处压力的精确快速控制。Matlab仿真结果表明:模糊PID控制器能更好地适应压力工作点的变化,解决了传统PID控制器难以适应不同压力工作点及受到干扰时稳定性较差的问题,提高了系统调控的快速性和稳定性。In the process of sand 3D printing,the ink supply system is an important component to ensure the high-quality printing of sand mold 3D printer.In view of the lag and randomness of the pressure control at the nozzle of the printhead in the current ink supply system,the self-tuning fuzzy PID controller is designed to adjust the PID parameters in real time at different working points to achieve accurate and rapid control of the pressure.Matlab simulation results show that the fuzzy PID controller can better adapt to the change of pressure.It solves the problem that the traditional PID controller is difficult to adapt to different pressure working point and has poor stability when disturbed,and improves the rapidity and stability of the system.

关 键 词：砂型打印 供墨系统 模糊PID控制 仿真模拟 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TP334.8[自动化与计算机技术—控制科学与工程]