A New Speed Control Algorithm for S-curve Acceleration Deceleration

A new control algorithm for S-curve acceleration deceleration is addressed in terms of actual numerical control machining conditions.In single path,the length of acceleration period,constant speed period,and deceleration period are respectively calculated by choosing the starting and ending speed,the machining speed curve is then obtained.The algorithm eliminates the restriction on the sameness of the starting and ending speed in traditional S-curve acceleration and deceleration.In multi-path,the speed restriction conditions about corner size and path length based on machining paths are respectively analyzed,and each inflexion speed in the pretreatment paths is given by using the slip window pretreatment strategy.Simulation results demonstrate that the proposed algorithm can shorten the machining time on single path and multi-path machining processes.