Infrared and Laser Engineering, Volume. 54, Issue 3, 20240623(2025)
Prediction and compensation of thermal offset in tooling ERS points under non-uniform temperature fields (invited)
Figures & Tables(17)
Fig. 1. The overall framework for the prediction and compensation of thermal offset in tooling ERS points under non-uniform temperature fields
Fig. 2. Logic diagram for determining the global trend of the tooling temperature field using LOOCV
Fig. 4. Logic diagram of the approach for selecting virtual temperature measurement points based on multi-objective optimization
Fig. 5. Flowchart of the adaptive dynamic local search prairie dog optimization
Fig. 6. Comparison of temperature field reconstruction by GPR-GTFR and Kriging methods
Fig. 12. Prediction curves of thermal offset for ERS points under uniform temperature change
Fig. 13. Prediction curves of thermal offset for a ERS point under varying temperature changes
Table 1. Material properties of the tooling
View tableView in ArticleTable 1. Material properties of the tooling
Parameter Value Elastic modulus E/MPa 2.1×105 Poisson's ratio $\upsilon $ 0.3 Thermal expansion coefficient $\alpha $ 1.2×10−5 Density $\rho $ 7.85
Table 2. Prediction error analysis of thermal offset for reference points (Unit: mm)
View tableView in ArticleTable 2. Prediction error analysis of thermal offset for reference points (Unit: mm)
Parameter Experiment group number 1 2 3 4 5 6 7 8 RMSE 0.0216 0.0267 0.0285 0.0365 0.0199 0.0229 0.0184 0.0215 MeanE 0.0188 0.0257 0.0280 0.0277 0.0173 0.0200 0.0147 0.0177 MaxE 0.0382 0.0300 0.0313 0.0372 0.0202 0.0300 0.0325 0.0351
Table 3. RMSE comparison of station transfer errors in
X ,Y , andZ directions before and after compensation (Unit: mm)View tableView in ArticleTable 3. RMSE comparison of station transfer errors in
X ,Y , andZ directions before and after compensation (Unit: mm)RMSE-X RMSE-Y RMSE-Z Before compensation 0.2381 0.1740 0.1999 After compensation 0.0370 0.0385 0.0424
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Yang ZHANG, Yipin SU, Yongkang LU, Junqing LI, Qihang CHEN, Ruidi YAN, Wei LIU. Prediction and compensation of thermal offset in tooling ERS points under non-uniform temperature fields (invited)[J]. Infrared and Laser Engineering, 2025, 54(3): 20240623
Paper Information
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Received: Jan. 2, 2025
Accepted: --
Published Online: Apr. 8, 2025
The Author Email: Yongkang LU (lyk_2017@mail.dlut.edu.cn)
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