Effects of friction models on simulation of pneumatic cylinder
<p>This study examines effects of three friction models: a steady-state friction model (SS model), the LuGre model (LG model), and the revised LuGre model (RLG model) on the motion simulation accuracy of a pneumatic cylinder. An experimental set-up of an electro-pneumatic servo system is built...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2019-10-01
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| Series: | Mechanical Sciences |
| Online Access: | https://www.mech-sci.net/10/517/2019/ms-10-517-2019.pdf |
| Summary: | <p>This study examines effects of three friction models: a
steady-state friction model (SS model), the LuGre model (LG model), and the
revised LuGre model (RLG model) on the motion simulation accuracy of a
pneumatic cylinder. An experimental set-up of an electro-pneumatic servo
system is built, and characteristics of the piston position, the pressures
in the two-cylinder chambers and the friction force are measured and
calculated under different control inputs to the proportional flow control
valves. Mathematical model of the electro-pneumatic servo system is derived,
and simulations are carried out under the same conditions as the
experiments. Comparisons between measured characteristics and simulated ones
show that the RLG model can give the best agreement among the three friction
models while the LG model can only simulate partly the stick-slip motion of
the piston at low velocities. The comparison results also show that the SS
model used in this study is unable to simulate the stick-slip motion as well
as creates much oscillations in the friction force characteristics at low
velocities.</p> |
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| ISSN: | 2191-9151 2191-916X |