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Lehrstuhl für Systemdynamik und Prozessführung


Hauptinhalt - Intranet

DYN at FOCAPO / CPC 2017

focapo 2017 small 


Professor Sebastian Engell and the research assistants Thomas Siwczyk and Simon Wenzel attended the FOCAPO / CPC 2017 (Foundations of Computer Aided Process Operations / Chemical Process Control, January 8-12, 2017) in the Loews Ventana Canyon Hotel and Resort, Tucson, Arizona.

Prof. Engell gave a talk in the CPC session "Distributed Control and Manufacturing and Risk Management" with the title "Handling Mixed Continuous-discrete Dynamics in Process Automation".

Furthermore, the chair presented the results of the following three papers in a poster session:

Sakthi Thangavel, Sankaranarayanan Subramanian and Sebastian Engell: Offset-free NMPC with Robust Constraint Satisfaction using Model-error Modeling

Simon Wenzel, Radoslav Paulen and Sebastian Engell: Quadratic Approximation in Price-based Coordination of Constrainted Systems-of-Systems

Thomas Siwczyk and Sebastian Engell: Sovling Two-stage Stochastic MILP Chemical Batch Scheduling Problems by Evolutionary Algorithms and Ordinal Ooptimization


Stefan Krämer on the success of the MORE project


© INEOS Köln/Oliver Brenneisen

Dr. Stefan Krämer, Site Energy Manager at INEOS in Köln and the lecturer of the course Batch Process Operations offered by DYN chair, gave an interview to European Commission on his view of the success of the EU-FP7 project MORE, where he acts as Industrial Application Coordinator and where the DYN chair participates as well. The full interview can be found here.

Plenary talk at CPHS 2016

plenary talk at cphs 2016 crop

Sebastian Engell was invited to give a plenary talk at the "1st IFAC Conference on Cyber-Physical & Human-Systems" (CPHS, 7-9 December 2016, Florianopolis, Brazil) where he presented approaches and results of the EU project MORE ("Real-time Monitoring and Optimization of Resource Efficiency in Integrated Processing Plants"). The goal of MORE is to monitor resource efficiency during daily operations of large production plants and to influence the operational decisions such that the plant efficiency is optimized and the environmental footprint is constantly minimized. Towards reaching this goal, indicators are defined that provide meaningful information about the resource efficiency over short periods of time like hours or days, and new analytical measurements to provide the necessary data were screened and tested. Based on the new indicators, decision support for the operating staff is developed to guide the decisions towards higher resource efficiency.

Besides Prof. Engells plenary talk on Operator Support for Improving Resource Efficiency in Chemical Plants the following papers were presented:

Daniel Ackerschott, Benedickt Beisheim, Stefan Kramer, Sebastian Engell: Industrial Application of Multi-criterial Decision Support to improve the Resource Efficiency

Clemens Lindscheid, Andreas Bremer, Daniel Haßkerl, Alexandru Tatulea-Codrean, Sebastian Engell: A Test Environment to Evaluate the Integration of Operators in Nonlinear Modes-Predictive Control


DYN auf der FOSBE 2016

sven fosbe16 web 

Sven Wegerhoff nahm an der 6. Internationalen Systembiologie Konferenz FOSBE (Foundations of Systems Biology in Engineering) teil. Die Konferenz tagte in der Johanniskirche in Magdeburg vom 10. Oktober bis zum 12. Oktober 2016 und Sven Wegerhoff prsentierte dort in einem Vortrag sein Paper,

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


DYN at MSC 2016


Alexandru Tatulea-Codrean and Clemens Lindscheid participated at the IEEE Multi-Conference on Systems and Control 2016 from 19-22 September 2016 in Buenos Aires, Argentina.

Talks from the DYN group at the conference included:

Clemens Lindscheid, Daniel Haßkerl, Andreas Meyer, Andreas Potschka, Georg Bock, Sebastian Engell: Parallelization of Modes of the Multi-Level Iteration Scheme for Nonlinear Model-Predictive Control of an Industrial Process

Alexandru Tatulea-Codrean, Daniel Haßkerl, Maren Urselman, Sebastian Engell: Steady-State Optimization and Nonlinear Model-Predictive Control of a Reactive Distillation Process Using the Software Platform do-mpc


DYN auf der ProcessNet


An der ProcessNet-Jahrestagung und der 32. DECHEMA-Jahrestagung der Biotechnologen am 12.-15.09.2016 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


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