Background and activities

After secondary school and alternative service, Dr. Backi studied Engineering Cybernetics at the University of Stuttgart/Germany, where he majored in "Automation in Power Engineering" at the Institute of Combustion and Power Plant Technology. He completed his mandatory internship at the Siemens AG, Sector Energy, Power Plant Control Group in Erlangen/Germany, where he also wrote his diploma thesis titled "Design and Test of an LQG-Controller for the Enthalpy-control of a Once-Through-Boiler". Dr. Backi graduated in December 2009 as Diplom-Ingenieur in Engineering Cybernetics (equivalent to M.Sc.).

From April 2011 to August 2015 he was a PhD Canditate at the Department of Engineering Cybernetics at the Norwegian University of Science and Technology. Title of the PhD-Thesis: "Modeling, Estimation and Control of Freezing and Thawing Processes - Theory and Applications" supervised by Professor Jan Tommy Gravdahl. In parallel to his PhD studies, Dr. Backi worked as a researcher at SINTEF Fisheries and Aquaculture in Trondheim/Norway in several projects from March 2014 to June 2015.

Since September 2015 he is a Postdoctoral Fellow at the Department of Chemical Engineering at the Norwegian University of Science and Technology in the project "SUBPRO - Subsea production and processing" under the supervision of Professor Sigurd Skogestad.

His research interests include, but are not limited to:

  • (non)linear control
  • process modeling and control
  • optimal control
  • control and systems theory
  • (nonlinear) observer design
  • thermodynamic processes
  • partial differential equations.

Scientific, academic and artistic work

Displaying a selection of activities. See all publications in the database

Journal publications

Part of book/report



  • Backi, Christoph Josef; Skogestad, Sigurd. (2018) Comparative study of Kalman Filter-based observers with simplified tuning procedures. 21st Nordic Process Control Workshop ; 2018-01-18 - 2018-01-19.
  • Backi, Christoph Josef. (2017) A control- and estimation-oriented gravity separator model. VI Oil and Gas Production Optimization Workshop . Petrobras, NTNU, Federal University of Santa Catarina; Rio de Janeiro. 2017-04-26.
  • Backi, Christoph Josef. (2017) Modeling and Control in Subsea Engineering. Colloquium Series at Aalborg University . Dept. of Electronic Systems, Automation and Control Section; Aalborg University. 2017-05-09.
  • Backi, Christoph Josef. (2017) Modeling of subsea processes. First Workshop of the Brazilian-Norwegian Subsea Operations Consortium . Brazilian-Norwegian Subsea Operations Consortium; Rio de Janeiro. 2017-04-24.
  • Backi, Christoph Josef; Grimes, Brian Arthur; Skogestad, Sigurd. (2017) Population Balance Equation for Calculation of the Inlet Distribution for Oil and Water Droplets in Continuous Gravity Separators. 2017 AIChE Annual Meeting . American Institute of Chemical Engineers; Minneapolis. 2017-10-29 - 2017-11-03.
  • Irja Sunde, Roiha; Guro, Tveit; Ásbjörn, Jónsson; Backi, Christoph Josef; Ulf, Erikson; Hanne, Digre; Bjørn Tore, Lunestad; Magnea, Karlsdóttir. (2017) Quality & safety of frozen-thawed Atlantic cod (Gadus morhua) fillets during chilled storage. World Seafood Congress ; Reykjavik. 2017-09-10 - 2017-09-13.
  • Backi, Christoph Josef; Skogestad, Sigurd. (2016) A gravity separator model for liquid level control and purity evaluation of oil and water phases. 20th Nordic Process Control Workshop ; Sigtuna. 2016-08-24 - 2016-08-26.
  • Backi, Christoph Josef; Gravdahl, Jan Tommy. (2015) A reduced observer design for a freezing process in plate freezers. 19th Nordic Process Control Workshop . Nordic Working Group on Process Control; On the Coastal Steamer "Richard With" from Trondheim to Bodø. 2015-01-15 - 2015-01-16.
  • Kyllingstad, Lars Tandle; Backi, Christoph Josef. (2014) Simulering og optimalisering av prosesslinjer. FishTech 2014 . SINTEF Fiskeri og havbruk AS, FHF; Ålesund. 2014-01-15 - 2014-01-16.
  • Backi, Christoph Josef; Gravdahl, Jan Tommy. (2013) Optimal Neumann boundary control for a freezing process with phase change. 18th Nordic Process Control Workshop . University of Oulu; Oulu. 2013-08-20 - 2013-08-23.
  • Backi, Christoph Josef; Gravdahl, Jan Tommy. (2012) Modeling of the freezing process for fish in vertical plate freezers. 17th Nordic Process Control Workshop . Technical University of Denmark; Copenhagen. 2012-01-26 - 2012-01-27.