Synchronous motion control of biaxial driving system with linear servo motors

High-precision operation in gantry systems is required to meet higher demands on synchronization positioning accuracy. In this paper, a synchronous control scheme for gantry moving type milling machining centers using dual linear servomotors is presented. To guarantee the requirement for high accuracy in synchronous tracking, the same position feedback controller is used to single linear motor position servo axis independently. The acceleration feedforward control and electrical cross coupled control algorithms based on fuzzy logic are applied to dual linear motor position servo axes to counteract the influence of mechanical coupling rapidly, and then meet dynamic synchronized performance in machining. The simulation results show that the proposed controller reduces the synchronous error considerably.