Blar i Institutt for kjemisk prosessteknologi på forfatter "Gravdahl, Jan Tommy"

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    • Combined state and parameter estimation for not fully observable dynamic systems 

      Backi, Christoph Josef; Gravdahl, Jan Tommy; Skogestad, Sigurd (Journal article, 2020)
      In this paper, a simple, yet novel method for state estimation and parameter identification for dynamic systems is presented. Apart from providing estimates of non-measurable state variables, the algorithm is also capable ...

    • Optimal boundary control of a contact thawing process for foodstuff 

      Backi, Christoph Josef; Leth, John; Gravdahl, Jan Tommy (Journal article, 2016)
      In this work an approach for thawing blocks of foodstuff, in particular fish, is introduced. The functional principle is based on plate freezer technology, which has been used in industry for decades. The aim of this work ...

    • Simple method for parameter identification of a nonlinear Greitzer compressor model 

      Backi, Christoph Josef; Gravdahl, Jan Tommy; Skogestad, Sigurd (Journal article; Peer reviewed, 2018)
      This work introduces a simple method to estimate state variables and identify parameters of a nonlinear dynamic Greitzer compressor model. The observer is based upon an extended Kalman filter, which estimates the dynamic ...