基于火焰动态纹理的电熔镁炉工况识别  

Conditions recognition of fused magnesia furnace based on flame dynamic texture

作　　者：赵磊 卢绍文 郑秀萍 ZHAO Lei;LU Shao-wen;ZHENG Xiu-ping(State Key Laboratory of Synthetical Automation for Process Industries,Northeastern University,Shenyang Liaoning 110819,China)

机构地区：[1]东北大学流程工业综合自动化国家重点实验室

出　　处：《控制理论与应用》2019年第9期1565-1572,共8页Control Theory & Applications

基　　金：国家自然科学基金项目(61473071,61833004)资助~~

摘　　要：电熔镁炉制备电熔镁砂的工艺过程中,会交替出现正常熔炼、加料和欠烧等不同工况,针对不同的工况需要采取相应的处理方式来保证生产过程的正常进行.目前,工况的识别主要依靠人工完成,这种方式存在工人劳动强度大、容易漏检误检等问题.本文依据不同工况下炉口火焰具有不同的动态可视化特征,提出一种基于动态纹理的工况识别技术.首先,建立炉口火焰的线性动态系统模型来刻画纹理的动态特性,然后,设计基于子空间主要角度的核函数来度量火焰动态模型相似度.对比实验表明本文设计的基于子空间主要角度的工况分类器具有更好的分类精度及鲁棒性.In the process of preparing fused magnesia in fused magnesium furnace,different working conditions such as Smelting condition,Feeding condition and Semi-fused condition alternately occur,and corresponding treatment methods are needed for these conditions to ensure the normal production process.At present,the identification of working conditions mainly relies on workers.This way has some problems such as high labor intensity of workers,detection omission and wrong detection.According to different dynamic visualization characteristics of furnace flame under different working conditions,a working conditions recognition technology based on dynamic texture is proposed.First of all,the dynamic characteristics of the textures are portrayed by establishing a linear dynamic system model of the furnace flame.In the next place,a kernel function based on subspace principal angles is designed to measure the similarity of flame dynamic model.The contrast experiments show that working conditions classifier based on the subspace principal angles designed in this paper has better classification accuracy and robustness.

关 键 词：电熔镁炉 纹理 工况识别 动态模型 线性动态系统 核函数 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]