Thermal positioning error modeling of machine tools using a bat algorithm-based back propagation neural network

Thermal error of a machine tool is one of the main reasons affecting the machining accuracy. Heat production and heat transfer of a machine tool are too complicated to predict the generated thermal error accurately. According to the nonlinear and time-varying characteristics of thermal error, the ba...

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Vydáno v:International journal of advanced manufacturing technology Ročník 97; číslo 5-8; s. 2575 - 2586
Hlavní autoři: Li, Yang, Zhao, Ji, Ji, Shijun
Médium: Journal Article
Jazyk:angličtina
Vydáno: London Springer London 01.07.2018
Springer Nature B.V
Témata:
Algorithms
Back propagation
Back propagation algorithms
Back propagation networks
CAE) and Design
Computer-Aided Engineering (CAD
Engineering
Errors
Industrial and Production Engineering
Machine tool industry
Machine tools
Machining
Mathematical models
Mechanical Engineering
Media Management
Modelling
Neural networks
Optimization
Original Article
Positioning devices (machinery)
Propagation
Three axis
Thermal error modeling
BP neural network
Bat algorithm
Swarm intelligent optimization algorithm
CNC machine tools
ISSN:0268-3768, 1433-3015
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Popis
Shrnutí:Thermal error of a machine tool is one of the main reasons affecting the machining accuracy. Heat production and heat transfer of a machine tool are too complicated to predict the generated thermal error accurately. According to the nonlinear and time-varying characteristics of thermal error, the back propagation (BP) neural network is perfectly suitable for thermal error modeling, which has been extensively used to map the nonlinear relationship. However, traditional BP neural network usually has poor prediction performance under different operating conditions. Therefore, a new swarm intelligent optimization algorithm, bat algorithm (BA), is introduced to optimize BP neural network and improve its performance. The focus of this paper is the application of the combined algorithm (bat algorithm-based back propagation neural network) to solve the problem of thermal error modeling. Thermal positioning error experiments were conducted on a three-axis experiment bench. The experimental results show that thermal positioning error model built by BA-BP neural network is more stable and has high prediction accuracy and strong robustness, which can provide a candidate method for thermal error modeling.
Bibliografie:ObjectType-Article-1
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ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-018-1978-x