Issue |
MATEC Web Conf.
Volume 363, 2022
5th International Conference on Advances in Materials, Machinery, Electronics (AMME 2022)
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Article Number | 01007 | |
Number of page(s) | 4 | |
Section | Research papers | |
DOI | https://doi.org/10.1051/matecconf/202236301007 | |
Published online | 29 August 2022 |
A novel geometric error identification and prediction approach
College of Mechanical Engineering & Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
* Corresponding author: 504789981@qq.com
This paper proposed an integrated geometric error identification and prediction method to solve the uncertainty problem of the PDGEs of rotary axis. First, based on homogeneous transform matrix (HTM) and multi-body system (MBS) theory, The transfer matrix only considering the C-axes rotated is derived to the position error model. Then a geometric errors identification of rotary axis is introduced by measuring the error increment in three directions. Meanwhile the geometric errors of C-axis are described as truncated Fourier polynomials caused by fitting discrete values. Thus, The geometric error identification is converted into the function coefficient. Finally, the proposed new prediction and identification model of PDGEs in the global frame are verified through simulation and experiments with double ball-bar tests.
Key words: Geometric error identification / Prediction / Rotary axis / Double ball bar / Five-axis machine tool
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
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