Fractional-order proportional-integral-derivative control of valve opening in centrifugal pump system based on Simulink
In response to the issues of insufficient control accuracy and low control stability in traditional proportional-integral(PI)controllers and proportional-integral-derivative(PID)controllers for valve opening in common centrifugal pump systems,a mathematical model of the pipeline valve opening control system in such systems was established using the Simulink module in MATLAB.The optimal control range for valve opening in centrifugal pumps,pipelines,and valve systems was determined.A valve opening control scheme was designed utilizing the fractional-order PID algorithm and the Oustaloup filter algorithm to enhance the response time and stability of the control system.The results indicate that,compared to traditional PID controllers with the same proportional,integral,and derivative parameters,targeting 75%valve opening,the fractional-order PID valve opening controller developed in this study reduces overshoot by 8.7%and decreases control stability time by 5.6 seconds.Notably,there is a significant enhancement in control result stability,with a marked decrease in stability time.The results offer valuable insights for further exploration into valve opening control in centrifugal pump systems.
centrifugal pump systemvalve openingthe optimal range of valve openingfractional-order PID
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