Results 31 to 40 of about 1,892,423 (234)

Thermal error modelling of machine tools based on ANFIS with fuzzy c-means clustering using a thermal imaging camera

, 2015
Thermal errors are often quoted as being the largest contributor to CNC machine tool errors, but they can be effectively reduced using error compensation.
Longstaff, Andrew P., Fletcher, Simon, Abdulshahed, Ali, Myers, Alan, Abdulshahed, Ali M.   +4 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

Modeling and detection of hot-spot in shaded photovoltaic cells [PDF]

, 2014
In this paper, we address the problem of modeling the thermal behavior of photovoltaic (PV) cells undergoing a hotspot condition. In case of shading, PV cells may experience a dramatic temperature increase, with consequent reduction of the provided power.
Giaffreda, Daniele, Giaffreda, D., Metra, Cecilia, Omana, Martin, Rossi D., Omana M., Omana, M., Giaffreda D., Metra C., Metra, C., OMANA, MARTIN EUGENIO, Rossi, D., Rossi, Daniele   +12 more
core   +1 more source

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

The Thermal Error Estimation of the Machine Tool Spindle Based on Machine Learning

Machines, 2021
Thermal error is one of the main sources of machining error of machine tools. Being a key component of the machine tool, the spindle will generate a lot of heat in the machining process and thereby result in a thermal error of itself.
Yu-Cheng Chiu, Po-Hsun Wang, Yuh-Chung Hu   +2 more
doaj   +1 more source

Spindle thermal error modeling method considering the operating condition based on Long Short-Term Memory

Engineering Research Express, 2021
Thermal error has a significant effect on machine tools’ precision. Traditional methods usually establish the thermal error model by temperature. As the temperature only describes the instant state of the machine tool, it is inadequate to clarify the ...
Yu Chen, Huicheng Zhou, Jihong Chen, Guangda Xu   +3 more
semanticscholar   +1 more source

The application of ANFIS prediction models for thermal error compensation on CNC machine tools

, 2015
Thermal errors can have significant effects on CNC machine tool accuracy. The errors come from thermal deformations of the machine elements caused by heat sources within the machine structure or from ambient temperature change.
Longstaff, Andrew P., Fletcher, Simon, Abdulshahed, Ali, Abdulshahed, Ali M.   +3 more
core   +1 more source

Real-Time Compensation for Thermal Errors of the Milling Machine

Applied Sciences, 2016
This paper is focused on developing a compensation module for reducing the thermal errors of a computer numerical control (CNC) milling machine. The thermal induced displacement variations of machine tools are a vital problem that causes positioning ...
Tsung-Chia Chen, Chia-Jung Chang, Jui-Pin Hung, Rong-Mao Lee, Cheng-Chi Wang   +4 more
doaj   +1 more source

A novel approach for ANFIS modelling based on Grey system theory for thermal error compensation

, 2014
The fast and accurate modelling of thermal errors in machining is an important aspect for the implementation of thermal error compensation. This paper presents a novel modelling approach for thermal error compensation on CNC machine tools.
Longstaff, Andrew P., Fletcher, Simon, Longstaff, Andrew P, Andrew P Longstaff, Ali M Abdulshahed, Abdulshahed, Ali, Simon Fletcher, Abdulshahed, Ali M.   +7 more
core   +1 more source

Measurement and Modeling of Spindle Thermal Error of Fiveaxis CNC Machine Tool with Double Turntable

Journal of Harbin University of Science and Technology, 2019
In order to measure the thermal error of the spindle in the actual cutting process of CNC machine tools and optimize the output of the thermal error model, a method of measuring the thermal error of the spindle of machine tools by using the thermal test ...
LIU Xianli, SONG Houwang, WU Shi, YUE Caixu, Steven Y.Liang, LI Rongyi   +5 more
doaj   +1 more source