Position Synchronized Control of Dual Linear Motors Servo System Using Fuzzy Logic

This paper presents a position synchronized controller for dual linear motors servo system in gantry moving type milling machining centers. 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 control methods are effective and yield superior performance.