【摘要】 为了分析阀门开度在液位控制过程中的控制效果，利用单容水箱作为研究对象，建立了整个控制系统的数学模型，并利用Simulink仿真平台观察液位高度变化曲线，进而分析了阀门开度对液位偏差的影响。仿真结果表明，在较短时间内，系统即可达到稳定状态，在第6 s加入扰动后，第7 s就能恢复至稳定状态；水箱的横截面积对系统达到稳定状态的时间有一定的影响，横截面积越大，达到稳定状态的时间越长；进出水阀门开度越接近时，液位高度偏差值越小；在进水阀门为全开状态时，随出水阀门开度的增加，液位偏差先增加后减小，在开度为10%时，偏差达到最大值0.12。更多还原

【Abstract】 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 stable 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 stable 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.更多还原