Comprehensive error modeling and compensation of a large gantry automatic fiber placement machine

被引：0
|
作者：
Wu J.-B. [1 ]
Li J. [1 ]
Zheng C.-G. [1 ]
Cheng L. [1 ]
机构：
[1] Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, Zhejiang University, Hangzhou
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2022年 / 56卷 / 02期
关键词：
Comprehensive error compensation; Error identification; Gantry automatic fiber placement (AFP) machine; Geometric error; Gravity deformation; Workspace meshing;
D O I：
10.3785/j.issn.1008-973X.2022.02.021
中图分类号：
学科分类号：
摘要：
A comprehensive error modeling and compensation method of gravity deformation and geometric error was proposed, in order to improve the accuracy of a large gantry automatic fiber placement (AFP) machine. Finite element method (FEM) was used for static analysis of the gantry AFP machine, and the gravity deformation model was established by workspace meshing method. A geometric error model based on homogeneous transformation matrix (HTM) and Chebyshev polynomial was established, in which the geometric error parameters were identified by combining the measurement data of gravity deformation removal and Powell algorithm. The gravity deformation model and the geometric error model were combined, and a G-code correction strategy based on comprehensive error compensation was proposed. A comprehensive error compensation experiment was performed on the gantry AFP machine, and results showed that before compensation, the error of the gantry AFP machine was large, which cannot fully meet the requirement of placement accuracy. After compensation, the position error and posture error were greatly reduced, the posture error was reduced by over 80%, and the position error was reduced by more than 90%, which met the requirement of placement accuracy, and proved the effectiveness of the proposed comprehensive error modeling and compensation method. Copyright ©2022 Journal of Zhejiang University (Engineering Science). All rights reserved.
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页码：398 / 407
页数：9
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