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Información tecnológica

On-line version ISSN 0718-0764

Abstract

VECIANA, J.M.  and  CARDONA, S. Stopping Motion Law of a Coordinate Measurement Machine Finger using Bézier Curves. Inf. tecnol. [online]. 2004, vol.15, n.3, pp.3-7. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642004000300001.

A definition is proposed for determining the stopping motion law for a touching finger of a coordinate measurement machine using non-parametric Bézier curves. An attempt was made  to reduce oscillations or vibrations between this finger and the machine jig, to produce the minimum measurement error at the end of the transient. The results obtained showed that the increase in the continuity index Ci at the beginning of the transient result in an increment of system oscillations, and the increase in the continuity index Cj at the end of the transient had no relevant effect. It is concluded that the results of this study are valid for a generic vibratory lineal system with n degrees of freedom, and shows that curves defined by sections, such as with  B-splines, are required to smooth the curve at the beginning of the transient without increasing the oscillations

Keywords : machine design; coordinate measurement; touching finger; vibration reduction; Bezier curves.

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