海底渗漏气泡流量测量过程的模糊控制

为了使海底天然气渗漏气泡流量测量过程具有稳定性和较高的测量精度,需要对气泡-水两相流介质的声场强度进行控制。根据测量装置的静态和动态特性以及声波线性传播方程,建立了声场强度的控制模型,针对被控环节的输入输出关系设计了模糊控制器。之后在MATLAB Simulink里面建立仿真模型,并进行了仿真实验。仿真结果表明,经过模糊控制器的调节,介质的声场强度可以跟踪被测介质中的气泡状态变化,其输出值的波动小于5%。该模糊控制器可用于海底渗漏气泡流量测量仪器的控制电路,从而实现了声波声场强度的控制。

Fuzzy Control of Undersea Gas Leakage Flow Measurement

In order to make the stability and high measuring accuracy of undersea bubble flow gas leakage acoustic measurement process,it is necessary to control the intensity of the sound field of bubble-water two phase flow medium.According to the static and dynamic characteristics of measuring device and sound waves linear equation,sound field control model is established,and designs fuzzy controller against the relationship between input and output.Simulation model is established in MATLAB Simulink and simulation experiment is performed.Simulation result shows that through the fuzzy controller,sound field intensity in the Medium can track the medium bubble state variation,fluctuations in the output value is less than 5%.