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Praktikfall i reglerteknik - Råspritbränneriet i Nöbbelöv

Andersson, Lennart; Gäfvert, Magnus LU ; Hedlund, Sven LU and Johnsson, Charlotta LU (1998) In Technical Reports TFRT-7573
Abstract (Swedish)
Vårterminen 98 gav Institutionen för Reglerteknik doktorandkursen Praktikfall i reglerteknik. Kursen bestod av ett projektarbete på en industri med reglertillämpningar. Den här rapporten redovisar resultatet av ett arbete på råspritbränneriet i Nöbbelöv, där basen för brännvinet Absolut Vodka tillverkas. Bränneriet hade problem med fluktuationer i koncentrationen av etanol i råspriten. Projektgruppens uppgift var att undersöka ursprunget till problemet, och om möjligt åtgärda det med förbättrad reglering. Problemet visade sig ha sitt ursprung i en utsignalbegränsning på en regulator, och kunde lösas med relativt enkla medel. För att undersöka om reglerprestanda kunde förbättras ytterligare gjordes en serie experiment på anläggningen.... (More)
Vårterminen 98 gav Institutionen för Reglerteknik doktorandkursen Praktikfall i reglerteknik. Kursen bestod av ett projektarbete på en industri med reglertillämpningar. Den här rapporten redovisar resultatet av ett arbete på råspritbränneriet i Nöbbelöv, där basen för brännvinet Absolut Vodka tillverkas. Bränneriet hade problem med fluktuationer i koncentrationen av etanol i råspriten. Projektgruppens uppgift var att undersöka ursprunget till problemet, och om möjligt åtgärda det med förbättrad reglering. Problemet visade sig ha sitt ursprung i en utsignalbegränsning på en regulator, och kunde lösas med relativt enkla medel. För att undersöka om reglerprestanda kunde förbättras ytterligare gjordes en serie experiment på anläggningen. Utifrån experimentresultaten tog vi fram en enkel modell av processen, och ett förslag på nya parametrar till koncentrationsregulatorn
(Less)
Abstract
During spring 1998 the course Industrial Case Studies in Control was given at the Department of Automatic Control in Lund. The course consisted of a project at an industry with control applications. This report considers a project at the crude alcohol distillery in Nöbbelöv, where the base product for the liquor Absolut Vodka is produced. The distillery had problems with fluctuations in the concentration of ethanol in the crude alcohol. The purpose of the project was to analyze the cause of the fluctuations, and if possibly eliminate it. The fluctuations were cause by an output limiter on a controller, and were relatively easily eliminated. To examine if control performance could be further improved, a series of experiments was carried out... (More)
During spring 1998 the course Industrial Case Studies in Control was given at the Department of Automatic Control in Lund. The course consisted of a project at an industry with control applications. This report considers a project at the crude alcohol distillery in Nöbbelöv, where the base product for the liquor Absolut Vodka is produced. The distillery had problems with fluctuations in the concentration of ethanol in the crude alcohol. The purpose of the project was to analyze the cause of the fluctuations, and if possibly eliminate it. The fluctuations were cause by an output limiter on a controller, and were relatively easily eliminated. To examine if control performance could be further improved, a series of experiments was carried out on the plant. The result of the experiments were then used to derive a simple process model, and a suggestion for new controller parameters. (Less)
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in
Technical Reports TFRT-7573
publisher
Department of Automatic Control, Lund Institute of Technology (LTH)
ISSN
0280-5316
language
Swedish
LU publication?
yes
id
23a2968f-09a9-4ddb-98a9-625791c95a44 (old id 8602752)
date added to LUP
2016-02-19 10:55:38
date last changed
2018-08-02 12:33:51
@techreport{23a2968f-09a9-4ddb-98a9-625791c95a44,
  abstract     = {During spring 1998 the course Industrial Case Studies in Control was given at the Department of Automatic Control in Lund. The course consisted of a project at an industry with control applications. This report considers a project at the crude alcohol distillery in Nöbbelöv, where the base product for the liquor Absolut Vodka is produced. The distillery had problems with fluctuations in the concentration of ethanol in the crude alcohol. The purpose of the project was to analyze the cause of the fluctuations, and if possibly eliminate it. The fluctuations were cause by an output limiter on a controller, and were relatively easily eliminated. To examine if control performance could be further improved, a series of experiments was carried out on the plant. The result of the experiments were then used to derive a simple process model, and a suggestion for new controller parameters.},
  author       = {Andersson, Lennart and Gäfvert, Magnus and Hedlund, Sven and Johnsson, Charlotta},
  institution  = {Department of Automatic Control, Lund Institute of Technology (LTH)},
  issn         = {0280-5316},
  language     = {swe},
  series       = {Technical Reports TFRT-7573},
  title        = {Praktikfall i reglerteknik - Råspritbränneriet i Nöbbelöv},
  year         = {1998},
}