Research on Sliding Mode Control of Valve Control System for High-Efficiency and Energy-Saving Pump Station
Hydraulic pump stations play a very important role in water supply,sewage treatment,agricultural irrigation,and multiple industrial processes,but they have the characteristics of time-varying and non-linear pressure and flow of servo valves.A sliding mode variable structure control strategy is proposed for the nonlinear components in the valve control system of high-efficiency and energy-saving pumping stations.Firstly,establish a nonlinear mathematical model of the valve control system in the valve controlled cylinder pump station,design a sliding surface,and derive an exponential approaching sliding mode control law.Secondly,the stability of the valve control system for high-efficiency and energy-saving pumping stations was verified using Lyapunov stability theory.Finally,the mathematical model and sliding mode controller of the system were constructed on the MATLAB/Simulink environment platform,and the sliding mode control method was compared with the PID control method.According to the simulation results analysis,the tracking accuracy of the sliding mode controller is significantly better than that of the PID control method.Compared with the PID control method,the sliding mode control method has improved the tracking accuracy by 70.31%.
high-efficiency and energy-saving pump stationvalve control systemsliding mode controlexponential convergencePID control
万方数据
维普
