A vane pump operating condition monitoring device and adjustment method

Abstract

The invention discloses a vane pump operating condition monitoring device and an adjustment method, including a vane pump, a data acquisition card, a pressure sensor, an electromagnetic flowmeter, a flow proportional valve and a LabVIEW host computer. The LabVIEW host computer includes a real-time working condition monitoring program and Fuzzy PID control program, the data acquisition card converts the analog signal through the built-in ADC module and transmits it to the LabVIEW host computer through the USB interface; the present invention adopts the traditional PID and fuzzy control combined intelligent control strategy, which solves the problem of The problem of poor control effect of traditional PID on nonlinear and time-varying systems also solves the shortcomings of low fuzzy control accuracy and less delicate control, and maximizes the stability and control accuracy of the system. By using neural networks to complete the entire Fuzzy control strategy: A large number of complex matrix operations in fuzzy reasoning are discarded through fuzzy control strategy, which reduces the system response time.

Description

technical field [0001] The invention relates to the technical field of automation and intelligent control of vane pumps, in particular to a vane pump operation condition monitoring device and an adjustment method. Background technique [0002] Water pumps are a type of fluid machinery that can convert the mechanical energy of the prime mover into the pressure potential energy and kinetic energy of the conveyed fluid. They are widely used in various sectors and fields of industrial and agricultural production and people's lives. Within the normal head range to ensure the required function; [0003] Most of the general water pump control systems adopt the single-loop PID control method, but this method has the problem of correcting the PID control parameters. Most of the industrial production processes are nonlinear, the parameters change at any time, and the time domain characteristics are difficult to determine. , only having a set of fixed parameters is far from meeting th...

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Problems solved by technology

[0004] In view of the above problems, the purpose of the present invention is to propose a vane pump operating condition monitoring device and adjustment method, the vane pump operating condition monitoring device and adjustment method adopts the traditional PID and fuzzy control combined with intelligent control strategy, both It solves the problem of poor control effect of traditional PID on nonlinear and time-varying systems, and also solves the shortcomings of low precision and less delicate control of fuzzy control, and maximizes the stability and control accuracy of the system. By using the neural network Complete the entire fuzzy control strategy; abandon a large number of complex matrix operations in fuzzy reasoning through the fuzzy control strategy, according to △Kp, △K I , ΔK D Based on the fuzzy control rules, the control clear quantity can be obtained to formulate the fuzzy query table, which reduces the system response time

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