Robust motion control of XY table for laser cutting machine

The position control algorithm for a belt-driven servomechanism of a laser cutting machine is described. A high-accuracy position tracking control procedure for systems with inherent elasticity due to the low-cost belt-driven servomechanism is derived based on a continuous sliding mode technique. The proposed robust position tracking control algorithm was tested by simulations and used in the industrial application of a motion controller for the CNC machine. Simulation and experimental results are also reported.