摘要
在微重力环境下,空间熔融沉积成形(Fused Deposition Modeling,FDM)设备的热喷嘴运动易受到动载冲击和惯性效应影响且振动衰减缓慢,导致热喷嘴运动轨迹偏差,影响成型质量。针对这一问题,以Delta型打印机为研究对象,提出一种基于压电纤维片的主动振动抑制方案,并引入3种自适应控制算法进行系统对比。结合Delta机构运动学与动力学特性,建立考虑连杆柔性化处理的动力学模型,构建联合仿真环境,在单自由度与多自由度工况下,分别施加单频和双频正弦激励,对3种算法在压电纤维片驱动下的振动抑制性能进行系统分析。
In the micro-gravity environment of space,the hot nozzle movement of Fused Deposition Modeling(FDM)equipment is easily affected by dynamic load impact and inertia effect,and the vibration attenuation is slow,which leads to the deviation of hot nozzle movement track and affects the molding quality.In order to solve this problem,this paper presents an active vibration suppression scheme based on piezoelectric fiber sheet for Delta printer,and introduces three adaptive control algorithms to compare the system.Combined with the kinematic and dynamic characteristics of Delta mechanism,the dynamic model considering the flexibility of linkage is established,and the joint simulation environment is constructed.Under the single-degree of freedom and multi-degree of freedom conditions,the vibration suppression performance of three algorithms driven by piezoelectric fiber sheet is analyzed systematically.
作者
梁朝军
申强
王凯
徐永旺
沈浩波
朱远科
杨新顺
LIANG Chaojun;SHEN Qiang;WANG Kai;XU Yongwang;SHEN Haobo;ZHU Yuanke;YANG Xinshun(School of Mechanical Engineering,Jiangsu University of Technology,Changzhou,Jiangsu 213000,China;CETHIK Group Co.,Ltd.,Hangzhou 311100,China)
出处
《智能物联技术》
2025年第5期123-131,共9页
Technology of Io T& AI
基金
江苏省自然科学基金项目(SBK2024046179)。
关键词
振动主动控制
多输入多输出(MIMO)
压电结构
active vibration control
Multiple Input Multiple Output(MIMO)
piezoelectric structure
