Results 31 to 40 of about 36,896 (299)

Prediction of Thermal Deformation and Real-Time Error Compensation of a CNC Milling Machine in Cutting Processes

open access: yesMachines, 2023
This study constructs a prediction model of thermal deformation with an artificial neural network and implements the real-time error compensation for a three-axis vertical CNC milling machine in cutting processes to improve the thermal error of the ...
Dang-Khoa Nguyen   +2 more
doaj   +1 more source

Optimization of characteristic diagram based thermal error compensation via load case dependent model updates

open access: yes, 2022
The compensation of thermal errors in machine tools is one of the major challenges in ensuring positioning accuracy during cutting operations. There are numerous methods for both the model-based estimation of the thermal tool center point (TCP ...
Christian Naumann   +9 more
core   +1 more source

Simulation and compensation of thermal lensing in optical systems

open access: yesOptics Express, 2022
High-power optical systems are used in a number of industrial applications. One difficulty in designing such systems is that the beam itself is a significant source of heat, which changes the optical properties of the system. To reduce this effect, we propose a new thermal lensing compensation technique based on a detailed analysis of the optical ...
Phillip Lino Rall   +3 more
openaire   +2 more sources

Compensation for Process and Temperature Dependency in a CMOS Image Sensor

open access: yesSensors, 2019
This paper analyzes and compensates for process and temperature dependency among a (Complementary Metal Oxide Semiconductor) CMOS image sensor (CIS) array. Both the analysis and compensation are supported with experimental results on the CIS’s dark
Shuang Xie, Albert Theuwissen
doaj   +1 more source

ResearchProgressonThermalErrorCompensationandStructuralOptimizationofHigh-SpeedMotorizedSpindle

open access: yesJournal of Harbin University of Science and Technology, 2023
Thermal displacement control of motorized spindles is one of the key problems in the machining process. Control thermal displacement of the motorized spindle to improve machining accuracy and surface quality. One of the common methods is to reduce the
LI Zhao long, ZHU Wen ming
doaj   +1 more source

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

open access: yes, 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.   +3 more
core   +1 more source

Modification of Desulfurization Slag for Hot Metal Bearing V-Ti and Industry Application

open access: yesMetals
In view of the high loss of iron during hot metal desulfurization treatment at Pangang Steel, the factors influencing slag skimming iron loss were analyzed thoroughly by thermodynamic calculation with the aid of FactSage.
Jun Chen, Lian Chen, Lijun Wang
doaj   +1 more source

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

open access: yes, 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.   +7 more
core   +1 more source

Digital Twin for Volumetric Thermal Error Compensation of Large Machine Tools

open access: yesSensors
Machine tool accuracy is greatly influenced by geometric and thermal errors that cause positioning deviations within its working volume. Conventionally, these two error sources are treated separately, with distinct procedures employed for their ...
Beñat Iñigo   +3 more
doaj   +1 more source

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

open access: yes, 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.   +4 more
core   +1 more source

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