Internal Mini-Workshop on Non-Linear Mixed Integer Optimal Control Algorithms

Thursday, February 02, 2023, 10:00 - Friday, February 03, 2023, 13:00

Liefmannhaus, Goethestrasse 35, 79098 Freiburg im Breisgau, Germany

Aim of this small and interactive two day workshop is to bring together users and developers of algorithms for nonlinear mixed integer optimal control problems, mostly from the University of Freiburg. Besides a few external invited presentations, each participant will briefly present his/her work in the area and discuss the algorithmic progress that was achieved in the last years. 


  • Liefmannhaus, Goethestrasse 35, Freiburg, (gmaps link)

Confirmed Participants so far:

  • Ramin Abbasi (Atlas Copco / KU Leuven)
  • Dr. Adrian Bürger (PathToZero)
  • Dr. Alberto De Marchi (UniBw München)
  • Prof. Dr. Moritz Diehl (Uni Freiburg)
  • Dr. Lilli Frison  (Fraunhofer ISE / Uni Freiburg)
  • Andrea Ghezzi (Uni Freiburg)
  • Jasper Hoffman (Uni Freiburg)
  • Manuel Kollmar (Karlsruhe University of Applied Sciences / Uni Freiburg)
  • Armin Nurkanovic (Uni Freiburg)
  • Anton Pozharskiy (Uni Freiburg)
  • Lukas Schmidt (Uni Freiburg)
  • Léo Simpson (Tool-Temp AG / Uni Freiburg)
  • Wim Van Roy (Atlas Copco / KU Leuven)
  • Dr. Clemens Zeile (OVGU Magdeburg)
  • Rudolf Reiter (Uni Freiburg) - only remote on 1st Feb



Tentative Programme:

Wed 1st Feb:

14:00-15:30 Virtual meeting via Zoom with Prof. Sager - (link to the virtual room will be share, together with the material)


Thu 2nd Feb: (@Liefmannhaus in Freiburg)

10:00-10:15 Introduction

10:15-11:00 Seminar "Recent Mixed Integer Optimal Control work from the Sager's group” by Dr. Clemens Zeile

11:00-11:30 Q&A

11:30-11:50 Break

11:50-12:10 "Mixed-integer challenges in prosumer heating networks" Dr. Lilli Frison

12:10-12:30 "Optimal Operation of District Heating Networks" Lukas Schmidt

12:30-14:00 Lunch break

14:00-14:45 "Methods and software for solving Mixed-Integer Nonlinear Programs in control applications"  Dr. Adrian Bürger

14:45-15:00 Q&A

15:00-15:10 Buffer

15:10-16:00 "Mixed-Integer Optimal Control for Compressed Air Systems" Wim Van Roy and Ramin Abbasi

16:00-17:00 Collaboration and synergy session

17:00 End of Day 1

19:00 Dinner ?


Fri 3rd Feb:  (@Liefmannhaus in Freiburg)

09:30-09:50 "Mathematical programs with complementarity constraints in optimal control" Armin Nurkanović

09:50-10:10 "Mixed-Integer Optimal Control of a Residential Heating Network using Linear and Nonlinear Programming Techniques" Manuel Kollmar

10:10-10:20 Coffee Break

10:20-10:40 "Voronoi-based Mixed-Integer Gauss Newton Algorithm for MINLP Arising in Optimal Control" Andrea Ghezzi

10:40-11:00 "Blended Benders-Voronoi-like Inequalities for Enforcing Descent in S-MIQP Algorithms" Prof. Dr. Moritz Diehl

11:00-11:30 Coffee Break

11:30-13:00 Collaboration and synergy session



This event is organized by Andrea Ghezzi and Moritz Diehl, for any enquiries send an email to Andrea.

This event has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 953348.