TITLE:
Dynamic Friction Behaviors of Pneumatic Cylinders
AUTHORS:
Xuan Bo Tran, Hideki Yanada
KEYWORDS:
Dynamic Behavior; Pneumatic Cylinder; Mathematical Model
JOURNAL NAME:
Intelligent Control and Automation,
Vol.4 No.2,
May
24,
2013
ABSTRACT: This paper deals with experimental investigation and modeling of dynamic friction behaviors in the sliding regime of pneumatic cylinders. Using three pneumatic cylinders, friction characteristics are investigated and modeled under various conditions of velocity variation and pressures. It is shown that a hysteretic behavior can be seen at low velocities in the friction force-velocity relation and the friction force varies nearly linearly with the velocity at high velocities. The hysteretic loop is expanded to higher velocities when the frequency of the velocity variation is increased, and its size is increased with increasing driving pressure and is decreased with increasing resistance pressure. It is shown that such behaviors can be relatively accurately simulated by the new modified LuGre model in which a few static parameters are varied with the frequency of velocity variation.