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Title: Experimental implementation of Taylor series expansion error compensation on a bi-axial CNC machine
Authors: Xi, X.-C.
Poo, A.-N. 
Hong, G.-S. 
Huo, F.
Keywords: CNC
Contour error
Contouring accuracy
Error compensation
Taylor series expansion
Issue Date: Mar-2011
Citation: Xi, X.-C., Poo, A.-N., Hong, G.-S., Huo, F. (2011-03). Experimental implementation of Taylor series expansion error compensation on a bi-axial CNC machine. International Journal of Advanced Manufacturing Technology 53 (1-4) : 285-299. ScholarBank@NUS Repository.
Abstract: In this paper, a new model-based Taylor series expansion error compensation (TSEEC) strategy is proposed to improve the contouring accuracy for computer numerically controlled (CNC) machines. In TSEEC, the contour error compensation problem is formulated as a Taylor series expansion problem, in which the value of the contour error is expanded around the reference points and the compensation components are calculated as the deviations from the reference points. Simulations show that, with perfect knowledge of the axial dynamics, zero contour errors can be achieved with TSEEC for both linear and circular contours. Due to modeling errors, external disturbances, and measurement noise, some modifications and experimentation need to be made to determine suitable parameters for implementation of the TSEEC scheme on a real machine. These measurements include a low-pass filter, a choice of a compensation target, and a compensation gain. Experimental results show the effectiveness of TSEEC in reducing contour errors and demonstrate the superiority of TSEEC over inverse feedforward compensation and cross-coupled control in improving the contouring accuracy.
Source Title: International Journal of Advanced Manufacturing Technology
ISSN: 02683768
DOI: 10.1007/s00170-010-2843-8
Appears in Collections:Staff Publications

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