Simulation for development of 2D interpolation algorithms for stepper motors

Stepper motors are used to control CNC machines for many applications. As well as following the required path precisely, it is also important that the motion be smooth and that the surface speed can be controllable. Improved interpolation algorithms for individual straight lines and circular arcs have been developed by us as presented in Chow et al. (2002) and Chow (2003). The algorithms control the motor by means of pulses and the generation of the pulse timings is based on the geometry of the shape. This paper describes how simulation has been used to evaluate the new algorithms and compare them with previous algorithms