Results 211 to 220 of about 1,078,541 (245)
Some of the next articles are maybe not open access.
Measurement: Journal of the International Measurement Confederation
Guoqiang Fu, Caijiang Lu
exaly +2 more sources
Guoqiang Fu, Caijiang Lu
exaly +2 more sources
Machine-Tool Error Observer Design With Application to Thermal Error Tracking
Journal of Manufacturing Science and Engineering, 2018AbstractA parameter identification procedure for identifying the parameters of a volumetric error model of a large machine tool requires hundreds of random volumetric error components in its workspace and thus takes hours of measurement time. It causes thermal errors of a large machine difficult to be tracked and compensated periodically.
Hua-Wei Ko +6 more
openaire +1 more source
Thermal modelling of an HSC machining centre to predict thermal error of the feed system
Production Engineering, 2012Machine tools equipped with linear motors can achieve high feed speed as well as high accuracy. However, the direct feed drive system generates heat through power loss and friction. In combination with environmental influences such as machine shop climate, this can lead to a local deformation of the machine tool structure and induce a direct ...
Eckart Uhlmann, Jiangmin Hu
openaire +1 more source
Measurement, modeling and compensation of thermal error for machine tools
2015 IEEE International Conference on Advanced Intelligent Mechatronics (AIM), 2015Thermal error accounts for a large proportion in the error sources of the machine tool. In this paper, the thermal error of a boring and milling machine tool is modeled with the output error model of timing analysis. In order to improve the prediction accuracy, Firefly algorithm is used to optimize the number of groups and the orders of output error ...
Haitong Wang +3 more
openaire +1 more source
Analysis and reduction of thermal dose errors in MRgFUS treatment
Physica Medica, 2014ExAblate 2000 MRgFUS system (InSightec) installed in Ospedale Maggiore Niguarda Ca' Granda (Milano, Italy) is currently used to treat uterine fibroids. Through the magnetic resonance thermometry (PRF method), it is possible to monitor the temperature in the target in real-time and compute the treated region calculating the thermal dose.
F. Zucconi +5 more
openaire +3 more sources
Experimental errors in predictions of thermal hazards
Plant/Operations Progress, 1991AbstractPredictions of critical conditions for thermal runaways are generally based on heat balance models using experimentally generated heat and kinetic data. The accuracy of the predictions depends on the fit of the models and the quality of the thermal data. The relative importance of these factors to the calculated critical reaction conditions are
openaire +1 more source
Error Analysis in Thermal Purity Determinations
1980We studied by simulation and experimentaly the deviations occuring at purity determinations. We propose a method for the proper choice of range for evaluation.The continuous and stepwise measuring techniques were compared.
Gy. Kiss, K. Seybold, T. Meisel
openaire +1 more source
Thermally-induced soft errors in nanoscale CMOS circuits
2007 IEEE International Symposium on Nanoscale Architectures, 2007Electrical noise will play an increasingly critical role in future nanoscale CMOS circuit operation character ized by lower supply voltages VDD and smaller device sizes. Both of these downscaling approaches reduce the margin of immunity to thermal noise, alpha particle strikes, and threshold voltage variations.
Hua Li 0032 +5 more
openaire +1 more source
A Review of Thermal Error Modeling Methods for Machine Tools
Applied Sciences (Switzerland), 2021Wenwu Wu
exaly