Erik Ydstie

Carnegie Mellon University
Department of Chemical Engineering
5000 Forbes Avenue
Doherty Hall, Room 2208B
Pittsburgh, PA 15213

W: 412-268-2235
F: 412-268-7139
Secretary:  AudreyTerrell

Education History

Ph.D., Chemical Engineering
Imperial College, University of London, England
Thesis: Robust Adaptive Control of Chemical Processes
Advisor: Professor R. W. H. Sargent, Dept. of Chem. Eng.
B.Sc. and M.Sc., Chemistry
Norwegian Institute of Technology, Norway 
Thesis: Application of Astrom's Self-tuning Regulator 
Advisors:  Professor D. Q. Mayne, Dept. Elec. Eng. 
                    Professor L. S. Kershenbaum, Dept. Chem Eng.

Academic Experience

2007 - present Professor of Electrical Engineering (by courtesy), Carnegie Mellon
2007 - present Professor II, Electrical Engineering, NUST, Trondheim, Norway
2001 - 2005 Professor II, Materials Technology NUST, Trondheim, Norway
1992 - present Professor of Chemical Engineering, Carnegie Mellon
1988 - 1992 Associate Professor, Chemical Engineering, University of Massachusetts
1982 - 1988 Assistant Professor, Chemical Engineering, University of Massachusetts
Industrial Experience
2005 - 2007 CTO and founder of iLS Inc.
2000 Chairman of the Board, Solar Grade Silicon, Oslo, Norway
1999 - 2000 Vice President of R&D ELKEM ASA, Oslo Norway
1981 - present Corporal in Cavalry Regiment, Norwegian Army
1980 - 1981 Research Assistant, Norwegian Defense Research Establishment, Oslo, Norway
2007 Speaker at the Keenan Symposium, MIT, Mech. Eng.
2007 Computing and Systems Technology Award of CAST Division of AIChE
2006 Roger W. Sargent Lecture on Process Systems Imperial College, Dec.
2005 Distinguished Lecturer,  University of Alberta
1993-1999 Associate Editor, Automatica
Advisory Boards and Review Panels
  2007 US Department of Energy
  2004 - present American Chemical Society, Petroleum Research Fund, Washington DC
  2004 - present Worchester Polytechnic Institute, Dept Chemical Engineering
  1996 - present National Science Foundation Review Panels
Consulting - Technical
  2005 - present Emerson Power and Water (Power plant control)
  2003 - present REC LLC, Moses Lake WA (Solar grade Silicon)
  1999 - present ALCOA, Inc. (New Generation Aluminum Processes , NGAP)
  1997 - 1998 KODAK, Image Aquisition Systems, (space based telescopes)
  1992 - 2005 PPG Industries, GTC,(Float glass and Windshield control)
  1989 - 1992 Martin-Marietta Aerospace, (TITAN IV booster stabilization)
Consulting - Management and Legal
  2002 - 2003 Heller and Ehrman, San Francisco, Expert Witness, Patent Litigation
  2001 - present ALCOA Inc. Research planning
  2000 - 2006 ELKEM Metals ASA, R&D Organization and programs
Academic Visiting Positions
1983 Academy of Sciences, Prague, Czechoslovakia
Aug 1988 - Jan 1989 University of Newcastle, Australia

Feb-Jul 1989,
Jun-Jul 1993

Ecole des Mines de Paris, France
Jan - Mar 1993 Institute of Mathematics and its Applications, Minneapolis, USA
Apr - Jun 1997 Imperial College London, United Kingdom
Current Research Interests
Nonlinear and adaptive control
Process networks, distributed simulation and control
Integration of business, IT and Process Systems Engineering
Professional Affiliations
2003 - present Round Table Group
1995 - present Engineering Society of Norway
1993 - 1999 Associate Editor, Automatica
1992 - present American Institute of Chemical Engineers
Founder, iLS Inc, May 2005
B. Erik Ydstie, Apparatuses, Systems, and Methods Utilizing Adaptive Control, PCT/US05/20863, Application, May 2005.
List of Key Publications (full list available here)

FORTESCUE, T. R., KERSHENBAUM, L. S. and YDSTIE, B. E. ``Self-Tuning Regulators with Variable Forgetting Factors," Automatica, Vol. 17, November 1981, pp. 831-835.

YDSTIE, B. E.``Extended Horizon Adaptive Control," A BRIDGE BETWEEN CONTROL SCIENCE AND TECHNOLOGY, J. Gertler and L. Keviczky (eds.) Pergamon Press, Oxford, England, 1984, pp. 134-137.

YDSTIE, B. E., KERSHENBAUM, L. S. and SARGENT, R. W. H.``Theory and Application of a Robust Tuning Regulator," AIChE J.,Vol. 31, No. 11, November 1985, pp. 1771-1780.

GOLDEN, M. P. and YDSTIE, B. E.,``On-line Optimization of a Continuous Bio-Reactor", AIChE J., 1989, Feb, pp. 1157-1169.

SLOTINE, J. J. E. and. YDSTIE, B. E., ``Nonlinear Adaptive Process Control; an Approach which uses Physical Models" Proc. IFAC Symposium on Nonlinear Control Systems, Capri, June, 1989, pp. 198-203.

YDSTIE, B. E. ``Stability of Discrete Model Reference Adaptive Control Revisited", Systems and Control Letters, Vol. 13, Dec 1989, pp. 429-438.

YDSTIE, B. E. ``Forecasting and Control using Adaptive Connectionist Networks", Comp. Chem. E., Vol. 14, No. 415, pp. 583-599, 1990

CO, T. and YDSTIE, B. E., ``Process Identification and Model Reduction using Modulating Functions and Fast Fourier Transforms" Comp. Chem. Eng. Vol.14, No. 10, pp 1051-1066, 1990.

NAIK, S. J., KUMAR, P. R. and YDSTIE, B. E.,``Robust Continuous Time Adaptive Control with Parameter Projection", FOUNDATIONS OF ADAPTIVE CONTROL, P. Kokotovic (Ed.), Springer Verlag, Berlin, 1991, pp. 153-200.

STERMAN, L. E. and YDSTIE, B. E. ``Periodic Perturbation and Averaging in Chemical Reacting Systems" b, Vol 37, No 7, July, 1991, pp. 986-996.

GOLDEN, M. P. and YDSTIE, B. E. ``Ergodicity and Small Amplitude Chaos in Adaptive Control", Automatica, Vol. 28, No. 1, Jan. 1992, pp 11-25.

YDSTIE, B. E. ``Transient Performance and Robustness of the Direct Adaptive Control", IEEE Transactions on Auto. Control, Vol. 37, No. 8, Aug. 1992, pp.1091- 1105.

DOCHAIN, D., PERRIER, M. and YDSTIE, B. E. ``Asymptotic Observers for Stirred Tank Reactors", Chem. E. Science, Vol. 47, No. 14/15, 1992, pp. 4167-4177.

FINN, C. K., YDSTIE, B. E. and B. WAHLBERG,``Quadratic Dynamic Matrix Control using FIR and Markov-Laguerre Models", AIChE Journal, Vol. 39,No. 11, 1993., pp. 1810-1826

GOLDEN, M. P. and YDSTIE, B. E. ``Drift Instabilities and Chaos in Forecasting and Adaptive Decision Theory", Physica D, Vol. 72, 1994, pp. 309-323.

BRADKE, S. J., YDSTIE, B. E. and BARTO, A. G. ``Adaptive Linear Quadratic Regulation using Policy Iteration," American Control Conference, Baltimore, MD, 1994.

RADENKOVIC, S. R. and YDSTIE, B. E., ``Using Persistent Excitation with Fixed Energy to Stabilize Adaptive Controllers and Obtain Hard Bounds for the Parameter Estimation Error", SIAM J. Cont. and Optimization, 1995

STAUS, G., L.T. BIEGLER and B. E. YDSTIE, Adaptive Control via Non-Convex Optimization, State of Art in Global Optimization, Vol 9. (C.A. Floudas and P.M. Pardoulos Eds.), Kluwer Academic Publ. Boston, (1996) pp. 119-138.

B. E. YDSTIE and A. ALONSO,``Process Systems and Passivity via the Clausius-Planck Inequality", Systems and Control Letters, Vol. 30, (1997), pp. 253-264.

KELLY, J. H. and YDSTIE, B. E. ``Adaptive H infinity control with application to systems with structural flexibility", IEEE Transactions on Auto. Cont., Vol 42, No. 10, October, (1997), pp. 1358-1369.

SAUAR, E. and YDSTIE, B. E. ``The temperatures of the maximum reaction rate and their relation to the equilibrium temperatures", Journal of Physical Chemistry A, Vol 102. (1998) pp. 8860-8864.

G. STAUS, L.T. BIEGLER and B.E. YDSTIE,``Global optimization for identification", Proc IEEE Conference on decision and Control, San Diego, CA, Dec 1998, pp

ALBUQUERQUE, J., V. GOPAL, G. STAUS, L.T. BIEGLER and YDSTIE, B. E. ``Interior point SQP strategies for structured process optimization problems", Comp in Chem E., in print.

HANGOS, K.M., A.A. ALONSO, J.D. PERKINS and B.E. YDSTIE, "Thermodynamic Approach to the Structural Stability of Process Plants," AIChE Journal, Vol 45, (1999), pp 802-816.

RADENKOVIC AND B.E. YDSTIE (1999) Optimality of a Direct Adaptive Controller in the Presence of Model Mismatch and Bounded Disturbances, Circuits Systems and Signals, Vol. 18, No 3

PEREA, E.; GROSSMANN, I.; YDSTIE, E.; TAHMASSEBI, T.; "Dynamic modeling and classical control theory for supply chain management", Computers & Chemical Engineering, Vol24 (2000), p.1143-1149

PEREA, E.; GROSSMANN, I.; B.E. YDSTIE,.; TAHMASSEBI, T.; "Dynamic modeling and decentralized control of supply chains"; Industrial and Engineering Chemistry Research, under review, I&EC.

COFFEY, DUNCAN P., CHAD A. FARSCHMAN AND B. ERIK YDSTIE (2000).Distillation Stability Using Passivity and Thermodynamics. Computers Chem Eng. 24: 317-322.

COFFEY, DUNCAN P., B. ERIK YDSTIE, TORBEN ANDERSEN, AND STEN BAY JORGENSEN (2001). Distillation Control Using Passivity. accepted ESCAPE 11. Denmark.

GEROGIORGIS, DIMITRIOS I. and B. ERIK YDSTIE, A Steady State CFD Simulation of a Carbothermic Reduction Reactor for the Production of Metallic Aluminium, TMS International Conference on the Computational Modeling of Materials, Minerals and Metals Processing, San Diego, CA, September 2001

GARCIA-OSORIO V., T. LINDSTAD AND E. YDSTIE, "Modeling Vapor Recovery in Carbothermic Aluminum Process", Light Metals, The Minerals, Metals and Material Society, February 2001

MARTIN G. RUSZKOWSKI, B. ERIK YDSTIE, LARRY T. BIEGLER, TOR LINDSTAD, "Modelling the Silicon Smelting Process as a DAE System", The 9 International Ferroalloys Congress: Infacon 9, Jun 3-6, 2001, Quebec City, Canada.