Hybrid grey box modelling of a pickling process

Document identifier: oai:dalea.du.se:1126
Access full text here:10.1016/j.conengprac.2004.11.005
Keyword: Engineering and Technology, Electrical Engineering, Electronic Engineering, Information Engineering, Teknik och teknologier, Elektroteknik och elektronik, Grey box modelling; nonlinear model; steel industry; Taylor series; identification
Publication year: 2005
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Abstract:

This paper deals with grey box modelling of an industrial process, in which known parts are modelled using a priori information and significant unknown parts are described as general continuous nonlinear functions. The modelling procedure follows a structured approach, which includes basic modelling, data acquisition, model calibration, hybrid expanded modelling, stochastic modelling and model appraisal. The general functions are approximated by means of the Taylor series including higher order terms, where the partial derivatives are estimated from measured data by minimising the maximum likelihood function. The Taylor series approach is used to keep the number of estimated parameters low in comparison with other nonlinear black box identification methods. The model is suitable for formulating algorithms to control the process, for example, a model predictive controller. The model can also be used to simulate various different production situations in order to improve the capacity of the total production line. Further, the relevant parts of the Taylor series can be used to explain in what way unknown process parts influence the behaviour of the process and give ideas for further investigation concerning the studied process

Authors

Björn Sohlberg

Högskolan Dalarna; Elektroteknik
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    header: 
        identifier: oai:dalea.du.se:1126
        datestamp: 2021-04-15T13:13:34Z
        setSpec: SwePub-du
    metadata: 
        mods: 
            @attributes: 
                version: 3.7
            recordInfo: 
                recordContentSource: du
                recordCreationDate: 2005-05-19
            identifier: 
                http://urn.kb.se/resolve?urn=urn:nbn:se:du-1126
                10.1016/j.conengprac.2004.11.005
            titleInfo: 
                @attributes: 
                    lang: eng
                title: Hybrid grey box modelling of a pickling process
            abstract: 
This paper deals with grey box modelling of an industrial process in which known parts are modelled using a priori information and significant unknown parts are described as general continuous nonlinear functions. The modelling procedure follows a structured approach which includes basic modelling data acquisition model calibration hybrid expanded modelling stochastic modelling and model appraisal. The general functions are approximated by means of the Taylor series including higher order terms where the partial derivatives are estimated from measured data by minimising the maximum likelihood function. The Taylor series approach is used to keep the number of estimated parameters low in comparison with other nonlinear black box identification methods. The model is suitable for formulating algorithms to control the process for example a model predictive controller. The model can also be used to simulate various different production situations in order to improve the capacity of the total production line. Further the relevant parts of the Taylor series can be used to explain in what way unknown process parts influence the behaviour of the process and give ideas for further investigation concerning the studied process

            subject: 
                    @attributes: 
                        lang: eng
                        authority: uka.se
                    topic: 
                        Engineering and Technology
                        Electrical Engineering Electronic Engineering Information Engineering
                    @attributes: 
                        lang: swe
                        authority: uka.se
                    topic: 
                        Teknik och teknologier
                        Elektroteknik och elektronik
                    @attributes: 
                        lang: eng
                    topic: grey box modelling; nonlinear model; steel industry; Taylor series; identification
            language: 
                languageTerm: eng
            genre: 
                publication/journal-article
                ref
            note: 
                Published
                1
            name: 
                @attributes: 
                    type: personal
                    authority: du
                namePart: 
                    Sohlberg
                    Björn
                role: 
                    roleTerm: aut
                affiliation: 
                    Högskolan Dalarna
                    Elektroteknik
                nameIdentifier: bso
            originInfo: 
                dateIssued: 2005
            relatedItem: 
                @attributes: 
                    type: host
                titleInfo: 
                    title: Control Engineering Practice
                identifier: 
                    0967-0661
                    1873-6939
                part: 
                    detail: 
                            @attributes: 
                                type: volume
                            number: 13
                            @attributes: 
                                type: issue
                            number: 9
                    extent: 
                        start: 1093
                        end: 1102
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                form: print
            typeOfResource: text