期刊
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
卷 229, 期 7, 页码 1131-1143出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0954405414545366
关键词
B-spline fitting; point-to-curve distance function; dominant point; look-ahead interpolation; parametric interpolator
资金
- National Natural Science Foundation of China [51325502]
- National Key Basic Research Program [2011CB706804]
- Science & Technology Commission of Shanghai Municipality [13JC1408400]
In this study, a real-time look-ahead interpolation methodology with B-spline curve fitting technique using the selected dominant points is proposed. First, an improved scheme for selecting the dominant points is proposed to reduce the numbers of control points and iterations. Second, a point-to-curve distance function is defined, and its Taylor's expansion is investigated for curve fitting. Finally, a real-time look-ahead interpolation function, which consists of spline fitting, feedrate scheduling and parametric interpolation modules, is developed to obtain smooth tool path and feedrate profile simultaneously. Experiments on an X-Y-Z platform are conducted with a three-dimensional tool path, and the results demonstrate the feasibility and efficiency of the present algorithms.
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