Characterization of Friction in a Servo-Driven Test-Bed for Control and Simulation Purposes
- Post by: airjournals
- March 31, 2020
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Precision control in certain critical systems, tracking systems with minimal error tolerance, and the availability of more tools of analysis, modelling and design. Friction is the tangential force between two contacting surfaces in relative motion. The surfaces in contact can be viewed from a microscopic point as contacting at a large number of points called asperities that are randomly distributed over the entire surface. The cumulative interactions of these bristles give rise to the friction phenomenon. In this paper, a series of experiments designed and implemented on a friction characterization and control test –bed is presented. The primary objective of friction characterization to the control engineer is for simulation and control design purposes. The results of the experiments show strong correspondence to other research findings as it relates the various friction features namely; pre-sliding hysteretic feature with non-local memory, frictional-lag, Stribeck effect and the stick-slip motion. This research findings and data will provide needed bases for system identification and modelling of system friction for precision control.
Keywords: Characterization of Friction; Control Systems; Pre-Slide Regime; Gross Slide Regime; Servo-Driven Test-Bed
Anthony Chidolue Nnaji