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30th Anniversary of the DYN Group

The DYN group was founded on August 1, 1990 and is currently celebrating its 30th anniversary of foundation. Read more about the journey of the group during the 30 years of boundless and persistent effort.


The Process Dynamics and Operations Group (DYN) was founded on August 1, 1990, at Universität Dortmund, in the department of Chemietechnik (Chemical Technology) by Prof. Sebastian Engell with the goal of conducting research on the application of systems and control theory and technology to physical, chemical and biological processes. After 30 years, the group remains firmly committed to this goal by persistent and unconditional effort in conducting research in relevant areas. Here is a special newsletter on the occasion of the 30th anniversary of the group foundation.


During 30 years of unconditional effort, the group has delivered inspiring research, which led to the graduation of 78 PhD students and training of many students via their thesis work. Check the list of the DYN PhD graduates in 30 years, who conducted their research in a wide range of topics under the supervision of Prof. Engell. 


On the occasion of the 30th anniversary, we have collected the most outstanding outcomes of research on the application of systems and control theory to the physical, chemical and biological processes, at the DYN group. Here are the 20 most-cited papers of the group from the past 30 years.

20 most-cited papers of the DYN group over 30 years

Document title Authors Year Source Cited by Access
Feedback control for optimal process operation Engell, S. 2007 Journal of Process Control 357 Link
Scope for industrial applications of production scheduling models and solution methods Harjunkoski, I., Maravelias, C.T., Bongers, P., Castro, P.M.,
Engell, S., Grossmann, I.E., Hooker, J., Méndez, C., Sand, G., Wassick, J.
2014 Computers and Chemical Engineering 285 Link
Multi-stage nonlinear model predictive control applied to a semi-batch polymerization reactor under uncertainty Lucia, S., Finkler, T., Engell, S. 2013 Journal of Process Control 150 Link
Iterative set-point optimization of batch chromatography Gao, W., Engell, S. 2005 Computers and Chemical Engineering 145 Link
Model Predictive Control Using Neural Networks Draeger, A., Engell, S., Ranke, H. 1995 IEEE Control Systems 134 Link
Continuous-discrete interactions in chemical processing plants Engell, S., Kowalewski, S., Schulz, C., Stursberg, O. 2000 Proceedings of the IEEE 122 Link
Optimization-based control of a reactive simulated moving bed process for glucose isomerization Toumi, A., Engell, S. 2004 Chemical Engineering Science 113 Link
Optimal operation: Scheduling, advanced control and their integration Engell, S., Harjunkoski, I. 2012 Computers and Chemical Engineering 98 Link
Handling uncertainty in economic nonlinear model predictive control: A comparative case study Lucia, S., Andersson, J.A.E., Brandt, H., Diehl, M., Engell, S. 2014 Journal of Process Control 90 Link
Gain-scheduling trajectory control of a continuous stirred tank reactor Klatt, K.-U., Engell, S. 1998 Computers and Chemical Engineering 82 Link
Optimization of steel production scheduling with complex time-sensitive electricity cost Hadera, H., Harjunkoski, I., Sand, G., Grossmann, I.E., Engell, S. 2015 Computers and Chemical Engineering 69 Link
Modeling and solving real-time scheduling problems by stochastic integer programming Sand, G., Engell, S. 2004 Computers and Chemical Engineering 69 Link
Verification of PLC programs given as sequential function charts Bauer, N., Engell, S., Huuck, R., Lohmann, S., Lukoschus, B., Remelhe, M., Stursberg, O. 2004 Lecture Notes in Computer Science  68 Link
An assessment of the current status of algorithmic approaches to the verification of hybrid systems Silva, B.I., Stursberg, O., Krogh, B.H., Engell, S. 2001 Proceedings of the IEEE Conference on Decision and Control 67 Link
Model-based optimization and control of chromatographic processes Klatt, K.-U., Hanisch, F., Dünnebier, G., Engell, S. 2000 Computers and Chemical Engineering 66 Link
Optimization of simulated moving bed and Varicol processes Toumi, A., Engell, S., Ludemann-Hombourger, O., Nicoud, R.M., Bailly, M. 2003 Journal of Chromatography A 65 Link
Systems & Control for the future of humanity, research agenda: Current and future roles, impact and grand challenges LamnabhiLagarrigue,
F., Annaswamy, A., Engell, S., Isaksson, A., Khargonekar, P., Murray, R.M., Nijmeijer, H., Samad, T., Tilbury, D., Van den Hof, P.
2017 Annual Reviews in Control 63 Link
Efficient optimization of simulated moving bed processes Toumi, A., Engell, S., Diehl, M., Bock, H.G., Schlöder, J. 2007 Chemical Engineering and Processing: Process Intensification 61 Link
Nonlinear control of a non-minimum-phase CSTR Engell, S., Klatt, K.-U. 1993 American Control Conference 51 Link

The group is still keeping the high spirits up in promoting its research contribution. Here is the list of the 2020 journal papers of the DYN group.

Journal papers of the DYN group in 2020

Document title Authors Source Access
Comparison of dual based optimization methods for distributed trajectory optimization of coupled semi-batch processes Maxeiner, L.S., Engell, S. Optimization and Engineering Link
Application of a grey-box modelling approach for the online monitoring of batch production in the chemical industry anwendung eines grey-box-modellierungsansatzes für die online-überwachung der batch-produktion in der chemischen industrie Bouaswaig, A.E.F., RahimiAdli,
K., Roth, M., Hosseini, A., Vale,
H., Engell, S., Birk, J.
At-Automatisierungstechnik Link
Structuring inter-organizational R&D projects: Towards a better understanding of the project architecture as an interplay between activity coordination and knowledge integration Klessova, S., Thomas, C., Engell, S. International Journal of Project Management Link
Application of dynamic metabolic flux analysis for process modeling: Robust flux estimation with regularization, confidence bounds, and selection of elementary modes Hebing, L., Neymann, T., Engell, S. Biotechnology and Bioengineering Link
Hierarchical aggregation of energy performance indicators in continuous production processes Beisheim, B., Krämer, S., Engell, S. Applied Energy Link
An accelerated dual method based on analytical extrapolation for distributed quadratic optimization of large-scale production complexes Maxeiner, L.S., Engell, S. Computers and Chemical Engineering Link
An efficient hierarchical market-like coordination algorithm for coupled production systems based on quadratic approximation Wenzel, S., Riedl, F., Engell, S. Computers and Chemical Engineering Link
Robust Optimizing Control of Fermentation Processes Based on a Set of Structurally Different Process Models Hebing, L., Tran, F., Brandt, H., Engell, S. Industrial and Engineering Chemistry Research Link
Stability properties of multi-stage nonlinear model predictive control Lucia, S., Subramanian, S., Limon, D., Engell, S. Systems and Control Letters Link


The DYN group has recorded numerous scientific talks as part of various virtual events over that past few months. More information on the current research activity of the group is found on our video portal. 


In the end, we would like to thank all the group members, all our cooperation partners in the numerous joint projects, the BCI Department and TU Dortmund that provided us with excellent working conditions, good administrative support, a friendly atmosphere, and many opportunities for collaborations during these 30 years. Big thanks also to all who supported us in various ways and believed in what we are working so hard to accomplish, and to the anonymous evaluators who fortunately supported most of our proposals

We appreciate your continued support and look forward to an exciting future.