Positioning and Tracking Control of an XY table

Position tracking accuracy of XY table is important for precise operations in manufacturing field. On the basis of minimizing the tracking error, a linear digital tracking control system is considered. Error Filter Feedforward Zero Phase Error Tracking Control (ZPETC) is designed and used in this system. The controller is used as it has the ability to give good performance in high speed frequency. The system transfer function is obtained via system identification technique using Matlab Toolbox. The performance of the controller in reducing the tracking error using high frequency input is analyzed through simulation. The system is also tested by implementing conventional feedforward controller for comparison purposes. Both controller performances are compared and the result shows tremendous tracking performance.