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Chair of Process Dynamics and Operations


Hauptinhalt - Intranet

DYN at the FOSBE 2016

sven fosbe16 web 

Sven Wegerhoff attended the 6th international system biology conference FOSBE (Foundations of Systems Biology in Engineering). The conference met in the Johanniskirche in Magdeburg from the 10th of October until the 13th of October, 2016 and Sven Wegerhoff presented there in an oral presentation his paper,

Sven Wegerhoff, Sebastian Engell: Control of the Production of Saccharomyces cerevisiae on the Basis of a Reduced Metabolic Model.


DYN auf der ProcessNet


An der ProcessNet-Jahrestagung und der 32. DECHEMA-Jahrestagung der Biotechnologen 2016 nahmen Daniel Ackerschott, Tim Janus, Marc Kalliski, Corina Nentwich und Maren Urselmann teil und stellten unter dem Generalthema "Nächste Generation von Produkten und Prozessen" ihre Arbeiten vor.

Daniel Ackerschott, Sebastian Engell: Multi-kriterielle Optimierung zur Verbesserung der Ressourceneffizienz

Marc Kalliski, Bernhard Voglauer, Gerhard Seyfriedsberger, Thomas Röder: Ressourceneffizienter Betrieb eines Verdampfernetzwerks in der Viskosefaserproduktion

Corina Nentwich, Jochen Steimel, Sebastian Engell: Entwicklung und Optimierung chemischer Prozesse unter Verwendung von datenbasierten Modellen

Maren Urselmann, Christophe Foussette, Tim Janus, Stephen Tlatlik, Michael T. M. Emmerich, Axel Gottschalk, Thomas Bäck, Sebastian Engell: Ein Memetischer Algorithmus zur globalen Suche optimaler Designalternativen und Betriebsparameter Chemischer Prozesse




Daniel Ackerschott participated at the 22nd International Congress of Chemical and Process Engineering (CHISA) and the 19th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction (PRES), which were held jointly in Prague, Czech Republic, from 27 to 31 August 2016. He presented his research within the MORE project with the talk:

Daniel Ackerschott, Benedikt Beisheim, Sebastian Engell: Decision support for optimised cooling tower operation using weather forecasts


DYN at WCCI 2016


Thilo Goerke, Corina Nentwich and Thomas Siwczyk attended the World Congress of Computational Intelligence 24.-29. July 2016 in Vancouver, Canada which was a congress combining the IEEE Congress of Evolutionary Computation (IEEE-CEC), the International Joint Conference on Neural Networks (IJCNN) and the IEEE International Conference on Fuzzy Systems (IEEE-FUZZ). They presented the papers:


Thilo Goerke, Sebastian Engell: Application of Evolutionary Algorithms in Guaranteed Parameter Estimation (IEEE-CEC)

Corina Nentwich, Sebastian Engell: Application of Surrogate Models for the Optimization and Design of Chemical Processes (IJCNN)

Thomas Siwczyk, Sebastian Engell: Solving Two-Stage Stochastic Mixed-Integer Linear Problems by Ordinal Optimization and Evolutionary Algorithms (IEEE-CEC)



Open Access Research Article from the DYMASOS Project Published Online

In order to cope with Open Science policy of EU-funded research projects, the recently published article "Optimal resource allocation in industrial complexes by distributed optimization and dynamic pricing" by Simon Wenzel (DYN), Radoslav Paulen (DYN), Goran Stojanovski (DYN), Stefan Krämer (INEOS in Cologne), Benedikt Beisheim (INEOS in Cologne), and Sebastian Engell (DYN) was granted the open access. The article is a partial result of the DYMASOS FP7 EU project and addresses the problem of distributed coordination of large-scale systems, such as chemical complexes, via adjustment of the prices for internally exchanged streams of materials and energy. The article can be obtained here.


DYN at ACC 2016

acc16 paulen 

Dr. Radoslav Paulen attended the 2016 American Control Conference, July 6–8 in Boston, MA, USA from July 6 to July 8, 2016.

He presented the paper:

Anwesh Reddy Gottu Mukkula and Radoslav Paulen: Optimal design of dynamic experiments for guaranteed parameter estimation

DYN at ECC 2016


Prof. Dr.-Ing. Sebastian Engell and the research associates Daniel Haßkerl and Simon Wenzel attended the 2016 European Control Conference, Aalborg, Denmark from June 29-July 1, 2016.

Talks from the DYN group at the conference:

D. Haßkerl, A. Meyer, N. Azadfallah, S. Engell, A. Potschka, L. Wirsching, H.G. Bock: Study of the Performance of the Multi-Level Iteration Scheme for Dynamic Online Optimization for a Fed-batch Reactor Example

S. Wenzel, R. Paulen, S. Krämer, B. Beisheim, S. Engell: Shared Resource Allocation in an Integrated Petrochemical Site by Price-based Coordination Using Quadratic Approximation


DYN at EURO 2016


Daniel Ackerschott participated at the 28th European Conference on Operational Research (EURO) in Poznań, Poland from 3rd to 6th of July 2016. He presented his research within the MORE project with the talk:

Daniel Ackerschott, Sebastian Engell "Industrial Application for Multi-criterial Decision Support"


DYN at MED 2016

MED very small

The employees of the DYN group, Shaghayegh Nazari and Daniel Haßkerl, participated in The 24th Mediterranean Conference on Control and Automation (MED) in Athens, Greece from 21st to 24th June 2016.


Talks from DYN group at the conference:

R. Paulen, S. Nazari, S. S. Amirreza, C. Sonntag and S. Engell: Primal and Dual Decomposition for Distributed MPC - Theory, Implementation, and Comparison in a SoS Simulation Framework

D. Haßkerl, S. Markert and S. Engell: Application of Model-Based Experimental Design for the Calibration of Online Composition Measurement by Near-Infrared Spectroscopy


Open Access Article Funded by European Research Council Published Online

In model-based real-time optimization, plant-model mismatch can be handled by applying bias- and gradient-corrections to the cost and constraint functions in an iterative optimization procedure. One of the major challenges in practice is the estimation of the plant gradients from noisy measurement data, in particular for several optimization variables. The recently published open-access paper “A Reliable Modifier-Adaptation Strategy for Real-Time Optimization” describes a new real-time optimization scheme that explores the inherent smoothness of the plant mapping to enable a reliable optimization. The idea is to combine the quadratic approximation approach used in derivative-free optimization techniques with the iterative gradient-modification optimization scheme. The convergence of the scheme is analyzed. Simulation studies for the optimization of a ten-variable synthetic example and a reactor benchmark problem with considerable plant-model mismatch show its promising performance.

Highlights • New optimization scheme targeting at economic process operations.  • Combine modifier adaptation with quadratic approximation to handle uncertainties.  • Quality-based optimization switching enables reliable and efficient convergence.

DYN at ESCAPE 2016

escape 2016 

Professor Sebastian Engell and the employees of the DYN group, Radoslav Paulen, Anwesh Reddy Gottu Mukkula, Lukas Samuel Maxeiner, Simon Wenzel, Reinaldo HernandezSankaranarayanan Subramanian and Weihua Gao, participated at the 26th European Symposium on Computer-Aided Process Engineering (ESCAPE) in Portorož, Slovenia from 12th to 15th June 2016.

Talks from DYN group at the conference:

S. Wenzel, R. Paulen, S. Krämer, B. Beisheim and S. Engell: Price Adjustment in Price-based Coordination Using Quadratic Approximation

Weihua Gao and Sebastian Engell: Using Transient Measurements in Iterative Steady-State Optimizing Control

Hubert Hadera, Rachid Labrik, Juha Mäntysaari, Guido Sand, Iiro Harjunkoski, Sebastian Engell: Integration of Energy-cost Optimization and Production Scheduling Using Multiparametric Programming

Fawad Shamim, Reinaldo Hernández,Radoslav Paulen and Sebastian Engell: A hierarchical coordination approach to the optimal operation of a sugar crystallization process

Lukas Samuel Maxeiner and Sebastian Engell: Distributed minimum batch time optimization for batch reactors with shared resources

Anwesh Reddy Gottu Mukkula and Radoslav Paulen: Optimal dynamic experiment design for guaranteed parameter estimation

Posters from DYN group at the conference:

Reinaldo Hernández and Sebastian Engell: Modelling and iterative Real-time Optimization of a homogeneously catalyzed hydroformylation process

Maren Urselmann, Tim Janus, Christophe Foussette, Stephen Tlatlik, Axel Gottschalk, Michael T. M. Emmerich, Thomas Bäck and S. Engell: Derivative-Free Chemical Process Synthesis by Memetic Algorithms Coupled to Aspen Plus Process Models

A. Sharma, M. Jelemenský, R. Paulen and M. Fikar: Estimation of membrane fouling parameters for concentrating lactose using nanofiltration


DYN at DYCOPS 2016

dycops2016 web

Professor Sebastian Engell and the employees of the DYN group, Reza Hashemi, Radoslav Paulen, Sergio Lucia (former employee, presently at OvGU Magdeburg and MIT Boston), Roberto Lemoine, Daniel Hasskerl, Sakthi Thangavel, Taher Sabry Ebrahim, Sankaranarayanan Subramanian and Lukas Hebing, participated at the 11th IFAC Symposium on Dynamics and Control of Process Systems, including Biosystems (DYCOPS-CAB 2016) in Trondheim, Norway from 6th to 8th June 2016.

Radoslav Paulen and Sebastian Engell co-organized a pre-conference workshop "Making model-based optimizing control an industrial reality" where the results of the MOBOCON project were presented. The workshop attracted 17 participants.

Talks from DYN group at the conference:

Taher Sabry ElSayed Gomaa, Ebrahim, Reinaldo Hernandez, Sankaranarayanan Subramanian, Marc Kalliski, Stefan Kraemer, Sebastian Engell: "NCO-Tracking with Changing Set of Active Constraints Using Multiple Solution Models"

Daniel Haßkerl, Momin Arshad, Reza Hashemi, Sankaranarayanan Subramanian, Sebastian Engell: "Simulation Study of the Particle Filter and the EKF for State Estimation of a Large-Scale DAE-System with Multi-Rate Sampling"

Lukas Hebing, Tobias Claus Neymann, Tobias Thüte, Alexander Jockwer, Sebastian Engell: "Efficient Generation of Models of Fed-Batch Fermentations for Process Design and Control"

Jose Roberto Lemoine-Nava Sebastian Walter, Stefan Körkel, Sebastian Engell: "Online Optimal Experiment Design: Reduction of the Number of Variables"

Sankaranarayanan Subramanian, Adeel Ahmad, Sebastian Engell: "Robust Control of a Supermarket Refrigeration System Using Multi-Stage NMPC"

Posters from DYN group at the conference:

Reza Hashemi, Sebastian Engell: "Effect of Sampling Rate on the Divergence of the Extended Kalman Filter for a Continuous Polymerization Reactor in Comparison with Particle Filtering"

Martin Jelemensky, Martin Klauco, Radoslav Paulen, Joost Lauwers, Filip Logist, Jan F.M. Van Impe, Miroslav Fikar: "Time-Optimal Control and Parameter Estimation of Diafiltration Processes in the Presence of Membrane Fouling"


MOBOCON Workshop "Model-based Optimizing Control"

The Chair of Process Dynamics and Operations co-organizes the workshop on Model-based Optimizing Control to take place on 9-10 June 2016 in Heidelberg. The aim of the workshop is to showcase the research results of the MOBOCON project to a wide international audience mainly from industry. The MOBOCON project is co-financed by the European Commission as ERC advanced grant awarded jointly to Prof. Engell, TU Dortmund and Prof. Bock, IWR Heidelberg. The participation in the workshop is free of charge. A link for registration as well as the program of the workshop can be found here.



achemasia gao

Dr Weihua Gao participated at the 10th International Exhibition and Conference on Chemical Engineering and Biotechnology in Beijing, China from 9th to 12th May 2016. He presented his researcher with the talk:

Weihua Gao, Reinaldo Hernandez, and Sebastian Engell: "Reliable and Efficient Strategy for Real-time Optimization of Processing Plants"

Prof. Sebastian Engell successful with the CoPro project proposal in Horizon 2020

The project proposal CoPro – “Improved energy and resource efficiency by better coordination of production in the process industries”, led by Prof. Sebastian Engell (Chair of Process Dynamics and Operations http://www.dyn.bci.tu-dortmund.de/en in the Faculty of Biochemical and Chemical Engineering of TU Dortmund), has been evaluated as excellent by independent experts within the SPIRE call of HORIZON 2020. The aim of the project is to develop software for process control as well as for optimal planning and control of factories, industrial plants and parks at dynamically changing market conditions. The CoPro consortium consists of 17 partner institutions from 8 countries and will receive funding of about 6 million € for a period of 3.5 years; 0.9 million € go to TU Dortmund. Prof. Sebastian Engell will coordinate the project. We congratulate him on the success! More info.


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