Results 31 to 40 of about 124,616 (302)

A Fourier Series-Neural Network Based Real-Time Compensation Approach for Geometric and Thermal Errors of CNC Milling Machines

Advances in Mechanical Engineering, 2013
In order to improve the accuracy and efficiency of the real-time error compensation, a Fourier Series-Neural Network (FS-NN) based compensation methodology is developed to reduce the thermally induced geometric errors of CNC milling machines under ...
Wei Wang, Yi Zhang, Kaiguo Fan, Jianguo Yang   +3 more
doaj   +1 more source

Temperature-Sensitive Point Selection and Thermal Error Model Adaptive Update Method of CNC Machine Tools

Machines, 2022
The thermal error of CNC machine tools can be reduced by compensation, where a thermal error model is required to provide compensation values. The thermal error model adaptive update method can correct the thermal error model by supplementing new data ...
Hui Liu, Enming Miao, Jingfan Wang, Liyin Zhang, Siyu Zhao   +4 more
doaj   +1 more source

Thermal Error Modeling for Machine Tools: Mechanistic Analysis and Solution for the Pseudocorrelation of Temperature-Sensitive Points

IEEE Access, 2020
The temperature-sensitive point is the input variable of the thermal error compensation model of computer numerical control (CNC) machine tools. At present, the most commonly used selection method is to measure the multipoint temperature and thermal ...
Hui Liu, Enming Miao, Liyin Zhang, Long Li, Yinlong Hou, Dafeng Tang   +5 more
doaj   +1 more source

A Review of Machine Learning-Based Thermal Error Modeling Methods for CNC Machine Tools

Machines
Heat source-induced thermal error is a primary element influencing the precision of CNC machine tools. A practical and economical approach to mitigating thermal errors is through thermal error compensation.
Sen Mu, Chunping Yu, Kunlong Lin, Caijiang Lu, Xi Wang, Tao Wang, Guoqiang Fu   +6 more
doaj   +1 more source

Compensation of Strong Thermal Lensing in High Optical Power Cavities [PDF]

, 2006
In an experiment to simulate the conditions in high optical power advanced gravitational wave detectors such as Advanced LIGO, we show that strong thermal lenses form in accordance with predictions and that they can be compensated using an intra-cavity ...
A. Brooks, A. E. Siegmann, B. J. J. Slagmolen, C. Cutler, C. M. Mow Lowry, C. Zhao, D. E. McClelland, D. G. Blair, D. Hosken, D. J. Hosken, D. Mudge, G. Billingsley, J. Degallaix, J. Munch, L. Ju, M. A. Barton, M. B. Gray, P. Hello, P. Hello, P. J. Veitch, Y. Fan   +20 more
core   +3 more sources

Overview of Advanced LIGO Adaptive Optics

, 2016
This is an overview of the adaptive optics used in Advanced LIGO (aLIGO), known as the thermal compensation system (TCS). The thermal compensation system was designed to minimize thermally-induced spatial distortions in the interferometer optical modes ...
Abbott, Benjamin, Arain, Muzammil A., Brooks, Aidan F., Ciani, Giacomo, Cole, Ayodele, Grabeel, Greg, Guido, Chris, Gustafson, Eric, Heintze, Matthew, Heptonstall, Alastair, Jacobson, Mindy, Kim, Won, King, Eleanor, Lynch, Alexander, Mailand, Ken, Mueller, Guido, Munch, Jesper, O'Connor, Stephen, Ottaway, David, Sannibale, Virginio, Shao, Zhenhua, Smith, Michael, Veitch, Peter, Vo, Thomas, Vorvick, Cheryl, Willems, Phil   +25 more
core   +1 more source

The Thermal Error Characteristic Analysis and Thermal Error Modeling Compensation of Aspheric Grinder

Mechanics
According to the literature analysis, the thermal error of CNC machine tools is the main factor affecting its processing accuracy, accounting for about 40% -70% ; This paper discusses the structure assembly of Aspherical Grinder, which is the research carrier of thermal error analysis of NC machine tool, and analyzes the characteristics and concrete ...
Bo YU, Xiao-peng CHANG, Lei YU
openaire   +1 more source

Development and Experimental Verification of a Thermal Elongation Prediction Model for Electric Spindles

Machines
Thermal elongation in high-speed motorized spindles constitutes a major source of machining error in five-axis machine tools, critically impacting machining precision.
Xinyu Liu, Lefu Jiang, Han Ye
doaj   +1 more source

FE analysis of multi-cycle micro-forming through using closed-die upsetting models and forward extrusion models [PDF]

, 2007
Research in micro-forming leads to the investigation of the effects of heat generation in the workpiece and temperature changes in the tools during the forming.
Pan, W., Qin, Y.
core   +1 more source

A particle swarm optimisation-based Grey prediction model for thermal error compensation on CNC machine tools [PDF]

, 2015
Thermal errors can have a significant effect on CNC machine tool accuracy. The thermal error compensation system has become a cost-effective method of improving machine tool accuracy in recent years.
Abdulshahed, Ali, Fletcher, Simon, Longstaff, Andrew P.   +2 more
core