In order to analyze the control effect of valve opening in the process of liquid level control,a single-tank water tank is used as the research object,and the mathematical model of the whole control system is established.The Simulink simulation platform is used to observe the change curve of liquid level height,and then the influence of valve opening on liquid level deviation is analyzed.The simulation results show that the system can reach a sta-ble state in a short time.After the disturbance is added at the 6th second,it can return to a stable state at the 7th second.The cross-sectional area of the water tank has a certain influence on the time for the system to reach a sta-ble state.The larger the cross-sectional area,the longer the time for the system to reach a stable state.The closer the opening of the inlet and outlet valve is,the smaller the deviation of the liquid level height is.When the inlet valve is fully open,the liquid level deviation increases first and then decreases with the increase of the opening of the outlet valve.When the opening is 10％,the deviation reaches the maximum value of 0.12.
关键词
液位高度/阀门开度/Simulink仿真/数学模型
Key words
liquid level height/valve opening/Simulink simulation/mathematical model
维普
万方数据