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A determination method of membership function of blast furnace gas system model based on multi-objective density clustering

A technology of membership function and blast furnace gas, which is applied in the field of determination of membership function in fuzzy modeling of blast furnace gas system

Active Publication Date: 2019-09-27
DALIAN UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is the determination of the membership function in the fuzzy modeling process of the blast furnace gas system in the existing metallurgical enterprises

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  • A determination method of membership function of blast furnace gas system model based on multi-objective density clustering
  • A determination method of membership function of blast furnace gas system model based on multi-objective density clustering
  • A determination method of membership function of blast furnace gas system model based on multi-objective density clustering

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Embodiment Construction

[0033] In order to better understand the technical solution of the present invention, taking the blast furnace gas system of an iron and steel enterprise with a relatively high level of automation in China as an example, the embodiment of the present invention will be further described. Composed of consumer users, gas cabinets, release towers and gas delivery systems. Among them, the source of blast furnace gas is 4 blast furnaces, and the users of gas consumption mainly include power plants, coke ovens, hot-rolling heating furnaces, cold-rolling heat treatment, chemical production, synthesis, low-pressure boilers, etc. The gas is diffused, and the transmission and distribution system is composed of a pipeline network, a mixing station, and a pressurization station. Due to the influence of the production process, the amount of blast furnace gas often fluctuates, and its drop can reach 500,000 m 3 / h, so that the consumption of gas users and the storage of cabinets also fluctu...

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Abstract

The invention provides a method for determining the membership function of a blast furnace gas system model based on multi-objective density clustering, which belongs to the field of fuzzy systems and fuzzy decision-making. Firstly, using the existing historical data of the metallurgical enterprise site, by introducing the multi-objective optimization method in the density clustering algorithm, considering the accuracy of the fuzzy model, the complexity of the model and the interpretability of the model, the best clustering parameters are determined, and then a reasonable The number of clusters and cluster centers; then design the corresponding membership function shape and parameters according to the industrial data characteristics and clustering results, so as to determine the membership function that conforms to the data distribution characteristics. The invention can make full use of the existing blast furnace gas historical data, determine the membership function of each variable of the fuzzy model, and then establish an effective blast furnace gas system fuzzy model.

Description

technical field [0001] The invention belongs to the field of fuzzy system and fuzzy decision-making, relates to clustering analysis, multi-objective optimization and fuzzy modeling theory, and is a method for determining membership function of blast furnace gas system fuzzy modeling based on multi-objective density clustering. The present invention utilizes the existing historical data at the metallurgical enterprise site, introduces a multi-objective optimization method into the density clustering algorithm, comprehensively considers the accuracy of the fuzzy model, the complexity of the model and the interpretability of the model, determines the best clustering parameters, and then obtains Reasonable number of clusters and cluster centers; then design the corresponding membership function shape and parameters according to industrial data characteristics and clustering results, so as to determine the membership function that conforms to the data distribution characteristics. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06F17/17G06K9/62G06N3/12
CPCG06F17/17G06N3/126G06F2111/06G06F30/20G06F18/23211
Inventor 杨淑慧吕政王霖青赵珺刘颖王伟
Owner DALIAN UNIV OF TECH