Development of positioning error measurement system based on geometric optics for long linear stage

Chien Sheng Liu, Jie Yu Zeng, Yu Ta Chen

研究成果: Article同行評審

摘要

The positioning error of the moving stage has a significant influence on the machining accuracy of a machine tool. Therefore, the positioning error must be measured accurately. Laser interferometer systems are widely used for positioning error calibration due to their accuracy, but these systems also have many shortcomings in standard procedure and measurement methods. In this study, a positioning error measurement system for a long linear stage by using geometric optics rather than interference principles is proposed. However, as the stage moves, geometric errors apart from the positioning error are produced. Accordingly, the proposed measurement system is designed to not only measure the positioning error but also simultaneously measure the multi-degree-of-freedom (MDOF) geometric errors of the linear stage. The proposed measurement system was characterized numerically by using the commercial software Zemax; the mathematical model of the errors was constructed by using a skew-ray tracing method, a homogeneous transformation matrix, and a first-order Taylor series expansion. The feasibility and effectiveness of the proposed measurement system were experimentally verified by using a laboratory-built prototype. The experimental results demonstrate that compared with conventional laser interferometers, the proposed measurement system has similar accuracy and can simultaneously measure the six-degree-of-freedom (6-DOF) geometric errors of a long linear stage.

原文English
頁(從 - 到)2595-2606
頁數12
期刊International Journal of Advanced Manufacturing Technology
115
發行號7-8
DOIs
出版狀態Accepted/In press - 2021

All Science Journal Classification (ASJC) codes

  • 控制與系統工程
  • 軟體
  • 機械工業
  • 電腦科學應用
  • 工業與製造工程

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