黑液波美度的一种在线软测量方法  

The Method of OnLine Soft Measurement for Degrees Baume of Black Liquor

作　　者：汤伟[1] 王孟效[1] 宗大伟[1] 

机构地区：[1]陕西科技大学微机应用研究所,咸阳712000

出　　处：《自动化仪表》2005年第10期9-12,16,共5页Process Automation Instrumentation

基　　金：陕西科技大学2004年博士研究基金资助项目

摘　　要：针对黑液波美度直接在线检测仪表价格昂贵的现状,采用软测量技术,通过在线检测差压和温度来间接换算出波美度。文中详细阐述了波美度的软测量模型,给出了模型参数的辨识方法和模型修正方法,介绍了波美度软测量仪表的西门子PLC实现。仪表已经投入使用,测量效果良好。Aiming at the fact that the direct on-line instrument measuring the degrees Baume of black liquor is very expensive, by means of soft measur ing technique an indirect way to figure out Baume is proposed in this paper by detecting derivative pressure and teraperature of the black liquor on-line.The soft measuring model and the methods for its parameter identification and adjustment are illustrated in detail. The corresponding soft sensor implemented by Siemens PLC is also introduced which has been used in a plant with good results.

关 键 词：软测量技术 黑液 波美度 PLC 在线检测仪表 波美度 软测量方法 黑液 软测量模型 软测量技术 软测量仪表 修正方法 辨识方法 

分 类 号：TS736.2[轻工技术与工程—制浆造纸工程] TS74