Robust Motion Control of XYTable for Laser Cutting Machine

Abstract

The position control algorithm for a beltdriven servomechanism of the laser cutting machine is described. High-accuracy position tracking control procedure for system with inherent elasticity due to the low-cost belt-driven servomechanism is derived based on continuos 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 reported. I. INTRODUCTION Tool machines have several motion axes. In order to control all motion axes servo controls with motion controllers are indispensable in CNC controllers for machining centers. Motion controllers must be able to guarantee execution of demanded motion, which satisfies the desired tolerance of the finished workpiece. There are two fundamental motion tasks, which are used in modern mechanical systems: PTP (Point-To-Point) movement for moving from one position point to another ..