Cross-Coupling Synchronization Control of High Precision Permanent Magnet Linear Motors

In this paper, a cross-coupling synchronization controller is proposed to achieve a synchronous motion for high-precision positioning systems with uncertainties and disturbances, where an additional P controller is equipped to generate cross-coupling control action. Tuning procedure of the control parameters is also provided, so that improved tracking and synchronization performance can be obtained. The key to the success of the new design is to ensure that each motor tracks its desired trajectory while synchronizing motion with others. Experiments on a positioning system with two permanent-magnet linear motors demonstrate the effectiveness of the proposed control method.