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Parametric interpolation using sampled data

โœ Scribed by Soon Yong Jeong; Yun Jong Choi; PooGyeon Park

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
382 KB
Volume
38
Category
Article
ISSN
0010-4485

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โœฆ Synopsis

Trajectory in high-speed precision machining requires very small feed-rate fluctuation and contour error, which can be achieved with parametric interpolation. Since it is impossible to exactly compute the arc-length of a general parametric curve, the conventional parametric interpolation obtains a parameter through a real-time update. Thus it cannot be used with a preplanned feed-rate profile, which restricts its applications. To overcome such a problem, the proposed algorithm estimate parameters using tabulated parameter and length data. The simulations show the proposed method useful with smaller contour error and acceptable feed-rate fluctuation comparable to the second order real-time parametric interpolation.

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