Effects of dynamic characters of the macro-micro fast coupling system in long stroke system

Macro-micro fast coupling system of dual-stage is used for the detachment and coupling of the macro-motion system and the wafer-stage. When the macro-motion system couples with the wafer-stage, the wafer-stage is driven by macro-motor to achieve long stroke motion. In this paper, the bottom air bearings of wafer stage are analyzed when the driving force of macro motor shifts the center of mass of wafer stage in Z direction. The X, Y, Z stiffness of the coupling system are obtained by using ANSYS.