abstract = "The goal of the paper is estimating the normalized
friction torque of a joint in an industrial robotic
manipulator. For this purpose a source data, given as a
figure, is digitized using a tool WebPlotDigitizer in
order to obtain numeric data. The numeric data is the
used within the machine learning algorithm genetic
programming (GP), which performs the symbolic
regression in order to obtain the equation that
regresses the dataset in question. The obtained model
shows a coefficient of determination equal to 0.87,
which indicates that the model in question may be used
for the wide approximation of the normalized friction
torque using the torque load, operating temperature and
joint velocity as inputs.",
notes = "Published by Scientific Technical Union of Mechanical
Engineering 'industry 4.0'. 108, RakovskiStr., 1000
Sofia, Bulgaria. office@stumejournals.com
Faculty of Engineering, University of Rijeka, Croatia",