Christoph J. Backi
PhD Engineering Cybernetics
Contact
Nils Ryjords vei 2
7020 Trondheim
Norway
+47 944 79 561
christoph.backi@ntnu.no
Education
2015–Now
Norwegian University of Science and Technology, Dept. of Chemical Eng., Trondheim, Norway
Project: Subsea production and processing (SUBPRO), Prof. Sigurd Skogestad
2011–2015
Programming/
Software
Matlab/Simulink
Maple
MS-Office
LATEX
Comsol Multiphysics
SPPA T-3000
Modelica
OLGA
PhD Engineering Cybernetics
Norwegian University of Science and Technology, Dept. of Eng. Cybernetics, Trondheim, Norway
Thesis: Modeling, Estimation and Control of Freezing and Thawing Processes:
Theory and Applications, Prof. Jan Tommy Gravdahl
Languages
German mother tongue
English fluency
Norwegian fluency
Swedish good
Danish good
French basic
Postdoctoral Researcher Chemical Engineering
08-12/2013
Visiting Researcher Control Engineering
Aalborg University, Department of Electronic Systems, Denmark
Research visit at the Automation & Control Section, Prof. Jakob Stoustrup
2004–2009
Diplom-Ingenieur (MSc) Engineering Cybernetics
University of Stuttgart, Germany
Specialization in Automation in Power Engineering
06-11/2009
Degree Candidate Power Plant Control
Siemens AG, Erlangen, Germany
Composition of the Diploma Thesis: Design and Test of an LQG-Controller for
the Enthalpy-control of a Once-Through-Boiler
08-12/2008
Erasmus exchange student Control Engineering
Chalmers University of Technology, Department of Signals and Systems, Gothenburg, Sweden
Courses in automatic control and system theory
Experience
03/14–06/15 Researcher
SINTEF Fisheries and Aquaculture, Trondheim, Norway
Project work regarding thawing of fish and fish products
2010–2011
Sales Engineer
WKL Helmstädter GmbH Elztal, Germany
Customer support and engineering regarding equipment for household heating
03-05/2009
Intern (Compulsory Internship)
Siemens AG, Erlangen, Germany
Topic: Test of an LQG-State-Controller for the Control of a Superheater
2006–2008
Student Assistant
University of Stuttgart, Institute for Machine Tools (Institut für Werkzeugmaschinen), Germany
Project work, e.g. ballistic tests for safety curtains in machine tools
2003–2004
Community Service Worker
Diakonisches Werk (Charitable Organization), Mosbach, Germany
Interests
Professional: (Non)Linear control, optimal control, control and systems theory, (nonlinear) observer design, thermodynamic processes, partial differential equations
Personal: Sports (fitness, football), music, books (crime, science fiction), traveling
Patents
2011
C.J. Backi, J. Gadinger, B. Meerbeck, M. Treuer, T. Weissbach, K. Wendelberger
Method and device for regulating the production of steam in a steam plant
International publication number: WO/2011/069700, Siemens AG, Germany
Publications
Full papers & theses
Published
2009
C.J. Backi
Design and Test of an LQG-controller for the enthalpy-control of a OnceThrough Boiler. Diploma Thesis, University of Stuttgart 2009
Note: Not publically available due to patent claims of the Siemens AG, Germany
2013
C.J. Backi, J.T. Gravdahl, E.I. Grøtli
Nonlinear observer design for a Greitzer compressor model. In Proceedings of
the 21st Mediterranean Conference on Control and Automation MED’13, Chania, Greece, June 25th–28th 2013
C.J. Backi, J.T. Gravdahl
Optimal boundary control for the heat equation with application to freezing with
phase change. In Proceedings of the 3rd Australian Control Conference, Perth,
Australia, November 4th–5th 2013
C.J. Backi, J.D Bendtsen, J. Leth, J.T. Gravdahl
The nonlinear heat equation with state-dependent parameters and its connection to the Burgers’ and the potential Burgers’ equation. In Proceedings of the
19th IFAC World Congress, Cape Town, South Africa, August 24th–29th 2014
2013
2014
2014
2015
2015
2015
2016
2016
C.J. Backi, J.D Bendtsen, J. Leth, J.T. Gravdahl
Estimation of inner-domain temperatures for a freezing process. In Proceedings of the 2014 Multi-Conference on Systems and Control, Antibes, France,
October 8th–10th 2014
C.J. Backi, J.D Bendtsen, J. Leth, J.T. Gravdahl
Stability properties of a heat equation with state-dependent parameters and
asymmetric boundary conditions. In Proceedings of the 1st IFAC Conference
on Modelling, Identification and Control of Nonlinear Systems (MICNON), SaintPetersburg, Russia, June 24th–26th 2015
C.J. Backi, J.D Bendtsen, J. Leth, J.T. Gravdahl
A heat equation for freezing processes with phase change: stability analysis and
applications. International Journal of Control, 89(4):833–849, Taylor & Francis
2015
C.J. Backi
Modeling, Estimation and Control of Freezing and Thawing Processes: Theory
and Applications. PhD Thesis, Norwegian University of Science and Technology
2015
C.J. Backi, J. Leth, J.T. Gravdahl
Optimal boundary control of a contact thawing process for foodstuff. In Proceedings of the 11th IFAC Symposium on Dynamics and Control of Process
Systems, including Biosystems (DYCOPS-CAB 2016), Trondheim, Norway,
June 6th–8th 2016
C.J. Backi, J.T. Gravdahl, S. Skogestad
Robust control of a two-state Greitzer compressor model by state-feedback
linearization. In Proceedings of the 2016 IEEE Multi-Conference on Systems
and Control, Buenos Aires, Argentina, September 19th–22nd, 2016
Submitted
2016
E. Jahanshahi, C.J. Backi, S. Skogestad
Anti-slug control based on a virtual flow measurement.
2016
I.S. Roiha, Á. Jónsson, C.J. Backi, B.T. Lunestad, U. Erikson, M. Karlsdóttir
Quality and safety of cod fillets during cold storage, as affected by different
thawing methods of whole fish.
2016
I.S. Roiha, G.M. Tveit, Á. Jónsson, C.J. Backi, B.T. Lunestad, U. Erikson, I. Aursand, H.
Digre, M. Karlsdóttir
Thawing methods in white fish processing, investigating effects of different
thawing media temperatures on cod fillets quality during water thawing.
2016
C.J. Backi, S. Skogestad
A simple dynamic gravity separator model for separation efficiency evaluation
incorporating level and pressure control.
2016
C.J. Backi
Enthalpy control for the feed water supply in a Once-Through Boiler with disturbance estimation.
Conference abstracts & presentations
2012
C.J. Backi, J.T. Gravdahl
Modeling of the Freezing Process for Fish in Vertical Platefreezers. Presented at
the 17th Nordic Process Control Workshop, Technical University of Denmark,
Kgs Lyngby, Denmark, January 25th–27th 2012
2013
C.J. Backi, J.T. Gravdahl
Optimal Neumann boundary control for a freezing process with phase change.
Presented at the 18th Nordic Process Control Workshop, University of Oulu,
Finland, August 20th–23rd 2013
2015
C.J. Backi, J.T. Gravdahl
A reduced observer design for a freezing process in plate freezers. Presented
at the 19th Nordic Process Control Workshop, Norwegian University of Science
and Technology, Trondheim, Norway, January 15th–16th 2015
2016
C.J. Backi, S. Skogestad
A gravity separator model for liquid level control and purity evaluation of oil
and water phases. Presented at the 20th Nordic Process Control Workshop,
Norwegian University of Science and Technology, Stockholm, Sweden, August
24th–25th 2016
References
Professor Sigurd Skogestad
Norwegian University of Science and Technology, Department of Chemical Engineering, Trondheim, Norway. Email: sigurd.skogestad@ntnu.no
Professor Jan Tommy Gravdahl
Norwegian University of Science and Technology, Department of Engineering Cybernetics,
Trondheim, Norway. Email: jan.tommy.gravdahl@ntnu.no
Professor Jakob Stoustrup
Aalborg University, Department of Electronic Systems, Automation & Control Section, Aalborg,
Denmark. Email: jakob@es.aau.dk