Correlation Stability Problem in Selecting Temperature-Sensitive Points of CNC Machine Tools
In the thermal-error compensation of CNC machine tools, temperature-sensitive points (TSPs) are used for predicting thermal error and need to have a high correlation with the thermal error. The stability of the correlation between TSPs and the thermal error is the key to long-term prediction accurac...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Machines |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-1702/10/2/132 |
| _version_ | 1797478575613411328 |
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| author | Hui Liu Enming Miao Liyin Zhang Dafeng Tang Yinlong Hou |
| author_facet | Hui Liu Enming Miao Liyin Zhang Dafeng Tang Yinlong Hou |
| author_sort | Hui Liu |
| collection | DOAJ |
| description | In the thermal-error compensation of CNC machine tools, temperature-sensitive points (TSPs) are used for predicting thermal error and need to have a high correlation with the thermal error. The stability of the correlation between TSPs and the thermal error is the key to long-term prediction accuracy. In this paper, the uncertainty-calculation method of the correlation coefficient is proposed to measure the stability of the correlation, and the reasons that affect the stability of the correlation of TSPs are analyzed. Then, the uncertainty-correlation coefficient is proposed, which can comprehensively evaluate the correlation and the stability of the correlation between TSPs and the thermal error. Through long-term experimental verifications, compared with the current TSP selection algorithm, the uncertainty-correlation coefficient can help to select a more stable TSP and improve the long-term prediction accuracy of the thermal error. |
| first_indexed | 2024-03-09T21:34:44Z |
| format | Article |
| id | doaj.art-da2707b4a6504cb7b64fb82419a8e275 |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-09T21:34:44Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj.art-da2707b4a6504cb7b64fb82419a8e2752023-11-23T20:48:46ZengMDPI AGMachines2075-17022022-02-0110213210.3390/machines10020132Correlation Stability Problem in Selecting Temperature-Sensitive Points of CNC Machine ToolsHui Liu0Enming Miao1Liyin Zhang2Dafeng Tang3Yinlong Hou4School of Automation, Xi’an University of Posts & Telecommunications, Chang’an West St. Chang’an District, Xi’an 710121, ChinaCollege of Mechanical Engineering, Chongqing University of Technology, Chongqing 400054, ChinaSchool of Automation, Xi’an University of Posts & Telecommunications, Chang’an West St. Chang’an District, Xi’an 710121, ChinaSchool of Automation, Xi’an University of Posts & Telecommunications, Chang’an West St. Chang’an District, Xi’an 710121, ChinaSchool of Automation, Xi’an University of Posts & Telecommunications, Chang’an West St. Chang’an District, Xi’an 710121, ChinaIn the thermal-error compensation of CNC machine tools, temperature-sensitive points (TSPs) are used for predicting thermal error and need to have a high correlation with the thermal error. The stability of the correlation between TSPs and the thermal error is the key to long-term prediction accuracy. In this paper, the uncertainty-calculation method of the correlation coefficient is proposed to measure the stability of the correlation, and the reasons that affect the stability of the correlation of TSPs are analyzed. Then, the uncertainty-correlation coefficient is proposed, which can comprehensively evaluate the correlation and the stability of the correlation between TSPs and the thermal error. Through long-term experimental verifications, compared with the current TSP selection algorithm, the uncertainty-correlation coefficient can help to select a more stable TSP and improve the long-term prediction accuracy of the thermal error.https://www.mdpi.com/2075-1702/10/2/132correlation stabilityuncertaintytemperature-sensitive pointsmachine toolsthermal error |
| spellingShingle | Hui Liu Enming Miao Liyin Zhang Dafeng Tang Yinlong Hou Correlation Stability Problem in Selecting Temperature-Sensitive Points of CNC Machine Tools Machines correlation stability uncertainty temperature-sensitive points machine tools thermal error |
| title | Correlation Stability Problem in Selecting Temperature-Sensitive Points of CNC Machine Tools |
| title_full | Correlation Stability Problem in Selecting Temperature-Sensitive Points of CNC Machine Tools |
| title_fullStr | Correlation Stability Problem in Selecting Temperature-Sensitive Points of CNC Machine Tools |
| title_full_unstemmed | Correlation Stability Problem in Selecting Temperature-Sensitive Points of CNC Machine Tools |
| title_short | Correlation Stability Problem in Selecting Temperature-Sensitive Points of CNC Machine Tools |
| title_sort | correlation stability problem in selecting temperature sensitive points of cnc machine tools |
| topic | correlation stability uncertainty temperature-sensitive points machine tools thermal error |
| url | https://www.mdpi.com/2075-1702/10/2/132 |
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