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PSO-PID algorithm based intelligent control method of automatic gas control valve

A technology for automatic valve control, PSO-PID, applied in electric controllers, controllers with specific characteristics, etc., can solve problems such as low accuracy, human error, and time-consuming

Inactive Publication Date: 2017-05-31
CHENGDU QIANJIA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an intelligent control method for gas automatic control valves based on the PSO-PID algorithm, which solves the problems of human error, long time consumption and low precision in the traditional gas control valve parameter setting process, and realizes the improvement of the valve's ability to respond to different gas flow rates. and the regulation and adaptability of the pressure system

Method used

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  • PSO-PID algorithm based intelligent control method of automatic gas control valve
  • PSO-PID algorithm based intelligent control method of automatic gas control valve
  • PSO-PID algorithm based intelligent control method of automatic gas control valve

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Effect test

Embodiment 1

[0072] Such as Figure 1 ~ Figure 3 A PSO-PID algorithm-based intelligent control method for gas automatic control valves shown includes the following steps:

[0073] (1) Set up the transfer function model of the gas valve controlled object, the transfer function model is

[0074]

[0075] (2) On the basis of the transfer function model, carry out the setting of PID algorithm controller;

[0076] (3) While performing the PID algorithm controller setting, initialize the particle swarm parameters in the PSO algorithm;

[0077] (4) Use the particle swarm optimization algorithm to optimize the parameters of the PID controller, compare whether the calculation results reach the accuracy or the number of iterations, and record the best Kp, Ki, and Kd parameter values;

[0078] (5) If the calculation result reaches the performance target, then end the calculation, and output Kp, Ki, Kd parameter values ​​as the optimal control parameters; if the calculation result does not meet t...

Embodiment 2

[0080] Such as Figure 1 ~ Figure 3 Shown a kind of gas automatic control valve intelligent control method based on PSO-PID algorithm, on the basis of real-time example 1, the specific implementation steps of the present invention are as follows:

[0081] (A), the transfer function model modeling of the gas valve controlled object in the described step (1) is completed according to the following steps:

[0082] First, set the initial speed of the motor as ω, the speed after deceleration as ω, set both the electromagnetic inertia and mechanical inertia to 0, and the deceleration output:

[0083] ω,=k 1 k 2 u r Formula 1)

[0084] Among them, k 1 is the motor conversion coefficient, k 2 is the reduction ratio, U r is the working voltage of the motor;

[0085] Secondly, according to the transmission effect of the valve coupling, the speed of the motor after deceleration is equal to the speed of the valve shaft, and the speed of the motor after deceleration is ω, which is...

Embodiment 3

[0121] Such as Figure 1 to Figure 5 In the shown intelligent control method for gas automatic control valves based on PSO-PID algorithm, on the basis of real-time example 2, a group of particle swarms are randomly generated, and the parameters of particle swarms in the PSO algorithm are initialized. The dimension is 3 dimensions, and the number is 30, then the particle swarm matrix is ​​30*3, each particle represents a KPI parameter, bring this particle swarm into the fitness function for calculation, and then update the speed and position, and then bring it into the fitness function Perform calculations, compare the fitness values ​​of the two time steps before and after, automatically record the particle swarm position parameter with the best fitness value as the individual optimal, and automatically record the optimal individual in the individual optimal matrix as the global optimal. in, Figure 5 Indicates that the Step signal source requires the output of the control it...

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Abstract

The invention discloses a PSO-PID algorithm based intelligent control method of an automatic gas control valve. The automatic gas control valve is taken as a research object, characteristics of a PID control system is taken into full consideration, and a transfer function model of a controlled object is established; meanwhile, an artificial intelligence technology is introduced, PID parameter optimal solutions are searched by an improved particle swarm algorithm with converging factors, and gas flow is automatically controlled. The PSO-PID algorithm based intelligent control method has the advantages that the shortcomings about manual parameter adjustment on a traditional PID gas control valve are overcome, and self-adjusting of PID parameters is realized; the intelligent control method is short in consumed time, high in precision and adaptive capability, good in applicability and the like, and has a promising application prospect and high business value.

Description

technical field [0001] The invention relates to the field of optimal control of gas automatic valves, in particular to an intelligent control method for gas automatic control valves based on a PSO-PID algorithm. Background technique [0002] The urban gas pipeline network is a pipeline network that provides gas demand for urban residents and industrial and commercial users, and is the "lifeline" that gas users rely on in their daily production processes. Since the demand of urban gas users changes with seasons, months, and days, in order to solve the contradiction between gas source supply and user demand, the gas company needs to monitor the flow and pressure of the pipeline network in real time, and make corresponding adjustments according to actual working conditions . Among them, the pressure regulating valve is an essential component to realize flow and pressure control. In the actual transmission and distribution process of urban gas, the dispatch center usually send...

Claims

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Application Information

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IPC IPC(8): G05B11/42
CPCG05B11/42
Inventor 周鑫浩张海军
Owner CHENGDU QIANJIA TECH CO LTD
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