III. International Turkic World Congress on Science and Engineering, Niğde, Türkiye, 14 - 15 Haziran 2021, ss.838-848
In this study, the effect of pressure increase rate and threshold speed
parameters on the maximum static friction forces in pneumatic cylinders’ onset of
motion was investigated. In order to investigate the effect of these two parameters,
a series of experiments at different pressure increase rate and threshold speed
values were carried out on a pneumatic cylinder in real time with MATLAB/Simulink.
In these experiments, an incremental pressure starting from zero was applied to
the relevant pressure chamber of the pneumatic cylinder by means of a pressure
regulating valve, and the instant of the first movement was accepted as the point
where the determined threshold speed was first exceeded. These two
determinative parameters with different values were selected and tested. The
results of the experiments shown that the pneumatic cylinder has different friction
force values. When the data obtained were examined, it was seen that the pressure
increase rate applied to the pressure chambers had a considerable effect on the
static friction force value and the threshold speed parameter slightly affected the
static friction force results. As a result of this study, it is clearly understood that in
calculating the static friction force of pneumatic cylinders, the pressure increase
rate and the threshold speed values should also be taken into account.