Complex form machining with axis drive predictive control

The paper proposes implementation of predictive control strategies on an industrial machining centre dedicated to high speed machining, realized within the framework of a CETIM study. Modelling, parameters identification and performances of the robustified axes drive polynomial controllers are first validated within a virtual machine-tool environment. Implementation is then achieved on the AXELOR 20SL machining centre, equipped with a Power Automation CNC. The computation of the controllers is carried out through the concept of compile cycles for real time scheduling. Results obtained with predictive control when machining a complex workpiece are finally compared to those achieved with the classical CNC control architecture. (c) 2008 CIRP.