Interpolation techniques for CNC manufacturing systems are either of the Reference-Pulse or Reference-Word type. Reference-Pulse interpolators have been discussed in a previous paper [2]. The present paper provides an analysis of a selected number of Reference-Word circular interpolation techniques that are useful in CNC systems. These interpolators function in an on-line iterative mode and generate binary words which are supplied as references to the control loops in Sampled-Data CNC systems. The various methods are evaluated in terms of accuracy, maximum permitted radius, and number of required iterations to complete a circular arc.

This content is only available via PDF.
You do not currently have access to this content.