In order to improve the motion accuracy and reduce the energy consumption of the feed system,an adaptive sliding mode control method was designed.The mechanical structure of the feed system was analyzed,and its composition was analyzed.The load torque of the lead screw was calculated through the lead and efficiency of the lead screw,and the dynamic equation of the lead screw was obtained based on the load torque of the lead screw.Under the action of motor torque,the motion equation of the motor shaft was established.Then,under the action of the motor,the state equation of the feed system was obtained.Based on the tracking error of the system,the nonlinear sliding surface was constructed.On the basis of the state equation of the feed system,the sliding mode control law was designed for the purpose that the state of the drive system tended to the desired sliding surface,and the adaptive gain model was constructed with the thin boundary layer of the control error as the constraint,and the design of the adaptive sliding mode control method was completed.The experimental results show that the tracking accuracy of the proposed method is 37.52% and 32.72% higher than that of the neural network method,and the energy consumption of the proposed method is 10.37% lower than that of the neural network method.