In order to overcome the unbalanced load lifting and load fluctuation of monorail crane and improve the safety of equipment,a Fuzzy-PID synchronous control system for monorail crane motor was proposed.The hydraulic working principle of the system was analyzed,and the master-slave synchronous control strategy was selected.Modeling in AMESim and Simulink was completed.The joint simulation was carried out and compared with PID to analyze the synchronization and robustness of the system.The simulation results show that it is feasible to use Fuzzy-PID for monorail hoisting motor.Compared with PID,it has the advantages of fast response,small overshoot and good robustness.When the Fuzzy-PID is used under eccentric load,the system reaches a stable speed in 0.8 s,which is 42.1% higher than that of PID; the maximum synchronization error is 35 r/min,which is 27.1% lower than PID; after stabilization,the synchronization error is 0.6 r/min,which is 40% lower than PID; when the load fluctuates,the system reaches a stable speed in 0.4 s,which is 42.9% higher than that of PID; the maximum synchronization error is 13 r/min,which is reduced by 9% compared with PID.Therefore,Fuzzy-PID can be used to effectively solve the unbalanced load start and load fluctuation conditions of lifting motor,ensuring the stable,synchronous and safe operation of monorail lifting.