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三维陶瓷零件低温沉积过程挤压力建模及自适应控制

李淑娟 包惠同 张恒

李淑娟, 包惠同, 张恒. 三维陶瓷零件低温沉积过程挤压力建模及自适应控制[J]. 机械科学与技术, 2016, 35(2): 253-259. doi: 10.13433/j.cnki.1003-8728.2016.0217
引用本文: 李淑娟, 包惠同, 张恒. 三维陶瓷零件低温沉积过程挤压力建模及自适应控制[J]. 机械科学与技术, 2016, 35(2): 253-259. doi: 10.13433/j.cnki.1003-8728.2016.0217
Li Shujuan, Bao Huitong, Zhang Heng. Modeling for Extrusion Force and Adaptive Control in the Freeze Deposition Process of Three Dimensional Ceramic Components[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(2): 253-259. doi: 10.13433/j.cnki.1003-8728.2016.0217
Citation: Li Shujuan, Bao Huitong, Zhang Heng. Modeling for Extrusion Force and Adaptive Control in the Freeze Deposition Process of Three Dimensional Ceramic Components[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(2): 253-259. doi: 10.13433/j.cnki.1003-8728.2016.0217

三维陶瓷零件低温沉积过程挤压力建模及自适应控制

doi: 10.13433/j.cnki.1003-8728.2016.0217
基金项目: 

国家973项目(2009CB724406)与陕西省教育厅基金项目(13JS071)资助

详细信息
    作者简介:

    李淑娟(1968-),教授,博士,博士生导师,研究方向为直接数字制造技术,shujuanli2009@gmail.com

Modeling for Extrusion Force and Adaptive Control in the Freeze Deposition Process of Three Dimensional Ceramic Components

  • 摘要: 在CNC机床上开发出一种新的三维陶瓷零件增材制造装置,在低于材料凝固点的温度下,将高固相膏体状陶瓷进行分层沉积成型,形成三维陶瓷材料零件。但在该三维零件沉积成型过程中,配置好的Al2O3材料由于挤压作用,会产生结块。当结块分解,膏体中气泡释放以及储料器中材料不断减少时,导致沉积过程的挤压力不断变化,使得成型过程不稳定,成形零件质量差。在分析三维陶瓷零件沉积成型过程的干扰因素的基础上,根据试验,建立了沉积过程中挤压力的动态模型,采用递推最小二乘方法进行系统辨识,完成了自适应挤压力控制器的设计,并进行了低温沉积控制过程仿真和实验。结果表明:该动态模型可以有效的描述陶瓷零件沉积过程的挤压力变化,所设计的自适应控制器可以有效的跟踪不同种类的参考挤压力的变化,实现稳定的三维陶瓷零件沉积过程。
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出版历程
  • 收稿日期:  2014-03-10
  • 刊出日期:  2016-02-05

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