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- W2897555878 abstract "Thermal error caused by the thermal deformation of computer numerical control (CNC) machine tools is one of the main factors to affect the machining accuracy. With monitoring data of the temperature field, establishing data-driven thermal error model is considered as a more convenient, effective and cost-efficient way to reduce the thermal error. As a matter of fact, it is very difficult to develop a thermal error model with perfect generalization adapting to different working conditions of machining tools. In this paper, a method of an ensemble modeling (EM) based on Convolution Neural Network (CNN) and Back Propagation (BP) Neural Network for modeling thermal error is presented. This ensemble model takes full advantages of two different neural networks, namely CNN having self-extracting feature to solve collinear problem in temperature field and BP can process heat source to thermal error by mapping nonlinear function, then combined into a EM. To demonstrate the effectiveness of the proposed model, an experiment platform was set up based on a heavy-duty CNC machine tool. The results show that the proposed model achieves better accuracy and strong robustness in comparison with only with BP network and CNN network respectively." @default.
- W2897555878 created "2018-10-26" @default.
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- W2897555878 date "2018-01-01" @default.
- W2897555878 modified "2023-10-06" @default.
- W2897555878 title "An Ensemble Modeling for Thermal Error of CNC Machine Tools" @default.
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- W2897555878 doi "https://doi.org/10.1007/978-981-13-2853-4_9" @default.
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