基于极坐标的新型3D打印机的设计与实验研究
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摘要
针对目前常规结构的3D打印机存在的打印速度慢、结构较复杂和打印回转体模型时精度差等问题,设计了一种极坐标式的新型3D打印机,该打印机具有3个自由度,由2个直角坐标加1个旋转平台组成,以微处理器(Advanced RISC Machine,ARM)作为核心控制器,步进电动机为驱动器件,采用模糊PID控制算法,使温度控制更精确。通过打印对比测试,表明极坐标式3D打印机具有打印速度快、精度高、稳定性好和控制简单等优点,并且采用模糊PID控制算法使得温度控制精度较高,温差控制在±2℃以内,加热时间缩短50 s左右,提高了整体打印质量,具有一定的应用价值。
Aiming at the problems such as slow printing speed,complicated structure and poor precision when printing the rotary body model,the 3 D printer with the conventional structure was designed with a polar coordinate type 3 D printer which had three degrees of freedom and took ARM as a core controller,stepper motor for the drive device,fuzzy PID control algorithm,the temperature control more accurate. Finally,the printing comparison test results show that polar coordinate 3 D printer with high print speed,high precision,good stability,simple control,and the use of fuzzy PID control algorithm makes the temperature control accuracy higher,improving the overall print quality,as future research provides a direction.
Aiming at the problems such as slow printing speed,complicated structure and poor precision when printing the rotary body model,the 3 D printer with the conventional structure was designed with a polar coordinate type 3 D printer which had three degrees of freedom and took ARM as a core controller,stepper motor for the drive device,fuzzy PID control algorithm,the temperature control more accurate. Finally,the printing comparison test results show that polar coordinate 3 D printer with high print speed,high precision,good stability,simple control,and the use of fuzzy PID control algorithm makes the temperature control accuracy higher,improving the overall print quality,as future research provides a direction.
引文
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[2]韩霞.快速成型技术与应用[M].北京:机械工业出版社,2012.
[3] WALTERS P,DAVIES K. 3D printing for artists:research and creative practice[J]. Journal of the Norwegian Print Association,2010(1):12-15.
[4]赵松年,张奇鹏.机电一体化机械系统设计[M].北京:机械工业出版社,1996.
[5]高艳芳.高速熔融挤压成型工艺及设备研究[D].北京:清华大学,2000.
[6]梁松松.并联结构3D打印机的运动学分析及精度研究[D].广州:广州大学,2016.
[7]王克义,路敦民,于凌涛.机电传动及控制[M].哈尔滨:哈尔滨工业大学出版社,2013.
[8]徐军,王天伦. 3D打印控制系统的设计[J].计算机测量与控制,2017,25(3):51-54.
[9] Allegro Microsystems,Inc. A4988 Microstepping Dmos Driver With Translator Data Sheet[EB/OL].[2013-09-10].http://www. allegromicro. com.
[10]李志强,周杰,任胜杰.基于单片机的步进电机细分驱动控制系统[J].机电工程,2007,24(7):67-69.
[11]陈学军.步进电机细分驱动控制系统的研究与实现[J].电机与控制应用,2006,3(6):48-50.
[12] LIU Hong,XU Jinhua. Research of Hybrid Fuzzy-PID Control Technology based on the Temperature and Humidity Control[J]. International Symposium on Computational Intelligence and Design,2008(10):190-193.
[13]张化光,何希勤.模糊自适应控制理论及其应用[M].北京:北京航空航天大学出版社,2002.
[14] GU Junjie,ZHANG Yanjuan,GAO Daming. Application of Nonlinear PID Controller in main steam temperature control. Power and Energy Engineering Conference[C]. AsiaPacific:[s. n.],2009.