TY - GEN
T1 - On acceleration/deceleration before interpolation for CNC motion control
AU - Tsai, Mi-Ching
AU - Cheng, Ming-Yang
AU - Lin, Kung Feng
AU - Tsai, Nan-Chyuan
PY - 2005/12/1
Y1 - 2005/12/1
N2 - To prevent from path command errors in CNC's motion control, performing "acceleration/deceleration before interpolation" (ADBI) motion planning on the desired feedrate profile is necessary. Although there are a few existing algorithms available for implementing ADBI, there is no clear choice In terms of contour error and machining efficiency. In this paper, a hybrid approach that takes both the contour error and the machining efficiency into account is proposed. In addition, based on the idea of "multi-blocks look ahead", this study also explores the problem of combining ADBI with NURBS (non-uniform rational B-spline) Interpolation. A contour that consists of four blocks of NURBS curves Is used to compare the performances of three different multi-blocks look ahead approaches: conventional, direct digital convolution, and the proposed hybrid approach. Experimental results show that the proposed hybrid approach exhibits superior performances compared with the other two approaches.
AB - To prevent from path command errors in CNC's motion control, performing "acceleration/deceleration before interpolation" (ADBI) motion planning on the desired feedrate profile is necessary. Although there are a few existing algorithms available for implementing ADBI, there is no clear choice In terms of contour error and machining efficiency. In this paper, a hybrid approach that takes both the contour error and the machining efficiency into account is proposed. In addition, based on the idea of "multi-blocks look ahead", this study also explores the problem of combining ADBI with NURBS (non-uniform rational B-spline) Interpolation. A contour that consists of four blocks of NURBS curves Is used to compare the performances of three different multi-blocks look ahead approaches: conventional, direct digital convolution, and the proposed hybrid approach. Experimental results show that the proposed hybrid approach exhibits superior performances compared with the other two approaches.
UR - http://www.scopus.com/inward/record.url?scp=33748916025&partnerID=8YFLogxK
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U2 - 10.1109/ICMECH.2005.1529287
DO - 10.1109/ICMECH.2005.1529287
M3 - Conference contribution
AN - SCOPUS:33748916025
SN - 0780389980
SN - 9780780389984
T3 - Proceedings of the 2005 IEEE International Conference on Mechatronics, ICM '05
SP - 382
EP - 387
BT - Proceedings of the 2005 IEEE International Conference on Mechatronics, ICM '05
T2 - 2005 IEEE International Conference on Mechatronics, ICM '05
Y2 - 10 July 2005 through 12 July 2005
ER -