Abstract:For the position synchronized problem of two linear motors in the synchronous drive process of 3D65CNC powerful spinning machine, the method of variable universe fuzzy PID control was applied to compensate position error of two permanent magnet synchronous linear motors, variable universe fuzzy PID synchronous controller was designed. But the single axis should have good servo system, which was an important prerequisite for biaxial synchronized state. Based on obvious nonlinear and hard to carry on the accurate modeling for linear motor, methods of modelfree adaptive control and pseudoderivative feedback control were applied to control singleaxis linear motor. At last, the feasibility of the scheme was verified through Simulink simulation. The simulation results show that the scheme has improved the synchronization control precision.