Study of the Friction Behavior in Industrial Pneumatic Actuators
نویسنده
چکیده
This paper presents a comparative study among friction behavior of several double-acting pneumatic actuators available to industrial use. A brief review covering the manner that pneumatic actuator manufacturers and current literature approach friction force and its usual models also is presented. After depicting friction test methodology and test apparatus, the comparison work is carried out through experimental tests to friction identification from steady state friction-velocity maps, that permit identify the main friction characteristics to each pneumatic cylinder in evaluation. They are Static friction, Coulumb friction, Stribeck friction and Viscous friction, that are important to design a precision pneumatic servo system. Experimental results to cylinders of several manufacturers are presented and show friction characteristics, that vary with actuator manufacturer. To know cylinder friction is an important step to friction compensation and to select the pneumatic actuator.The appropriate choice of actuator manufacturer also can contribute to the precision control success.
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