Please use this identifier to cite or link to this item:
|Title:||Tracking error-based static friction compensation for a bi-axial CNC machine|
|Source:||Xi, X.-C., Poo, A.-N., Hong, G.-S. (2010-07). Tracking error-based static friction compensation for a bi-axial CNC machine. Precision Engineering 34 (3) : 480-488. ScholarBank@NUS Repository. https://doi.org/10.1016/j.precisioneng.2009.12.003|
|Abstract:||Contour errors usually result from unmatched dynamics, limited axial bandwidth and undesirable nonlinearities. For circular contours, friction, especially static friction, deteriorates the circular contouring accuracy at quadrant positions where there is reversal of velocities or motion from standstill. A two-stage tracking error-based static friction compensation scheme is proposed to compensate for static friction during the transition from the presliding regime to the sliding regime. The compensation consists of two phases, which are implemented sequentially in time. The first is a function of tracking error and the second is a function of tracking error and velocity. The compensation signals are then imposed at the input of the velocity control loop. Experimental results show that the two-stage tracking error-based static friction compensation scheme can effectively improve the circular contouring accuracy at quadrant positions without complicated modeling. © 2009 Elsevier Inc. All rights reserved.|
|Source Title:||Precision Engineering|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Mar 7, 2018
WEB OF SCIENCETM
checked on Jan 31, 2018
checked on Mar 11, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.