The sliding mode control method has the advantages of strong robustness and simple controller structure,and is widely used in pump-controlled electro-hydraulic servo hydraulic system. On the basis of analyzing the control principle of the pump control system,in order to improve the traditional PID control is difficult to resist the strong external interference force,the exponential reaching law sliding mode controller is established in the pump control servo system. Establish MATLAB/Simulink simulation of pump control servo system. The co-simulation results show that the maximum steady-state tracking error of sliding mode control is reduced by 83.4％ compared with PID under sinusoidal signal tracking,and the IMSE index phase of controller is significantly reduced. The research is helpful to improve the operation efficiency of hydraulic press and has a certain theoretical support significance for ensuring the quality of forging.
Hydraulic pressPump control servo systemSliding mode controlIndex reaching rateSignal tracking
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