@article{Wittmann2000,
  author    = {Wittmann, Klaus},
  title     = {Overview of Space Operations at DLR},
  year      = {2000},
  language  = {en}
}
@inproceedings{WittigRuettersBragard2024,
  author    = {Wittig, M. and R{\"u}tters, Ren{\´e} and Bragard, Michael},
  title     = {Application of RL in control systems using the example of a rotatory inverted pendulum},
  series = {Tagungsband AALE 2024 : Fit f{\"u}r die Zukunft: praktische L{\"o}sungen f{\"u}r die industrielle Automation},
  booktitle = {Tagungsband AALE 2024 : Fit f{\"u}r die Zukunft: praktische L{\"o}sungen f{\"u}r die industrielle Automation},
  editor    = {Reiff-Stephan, J{\"o}rg and J{\"a}kel, Jens and Schwarz, Andr{\´e}},
  publisher = {le-tex publishing services GmbH},
  address   = {Leipzig},
  isbn      = {978-3-910103-02-3},
  doi       = {10.33968/2024.53},
  pages     = {241 -- 248},
  year      = {2024},
  abstract  = {In this paper, the use of reinforcement learning (RL) in control systems is investigated using a rotatory inverted pendulum as an example. The control behavior of an RL controller is compared to that of traditional LQR and MPC controllers. This is done by evaluating their behavior under optimal conditions, their disturbance behavior, their robustness and their development process. All the investigated controllers are developed using MATLAB and the Simulink simulation environment and later deployed to a real pendulum model powered by a Raspberry Pi. The RL algorithm used is Proximal Policy Optimization (PPO). The LQR controller exhibits an easy development process, an average to good control behavior and average to good robustness. A linear MPC controller could show excellent results under optimal operating conditions. However, when subjected to disturbances or deviations from the equilibrium point, it showed poor performance and sometimes instable behavior. Employing a nonlinear MPC Controller in real time was not possible due to the high computational effort involved. The RL controller exhibits by far the most versatile and robust control behavior. When operated in the simulation environment, it achieved a high control accuracy. When employed in the real system, however, it only shows average accuracy and a significantly greater performance loss compared to the simulation than the traditional controllers. With MATLAB, it is not yet possible to directly post-train the RL controller on the Raspberry Pi, which is an obstacle to the practical application of RL in a prototyping or teaching setting. Nevertheless, RL in general proves to be a flexible and powerful control method, which is well suited for complex or nonlinear systems where traditional controllers struggle.},
  language  = {en}
}
@book{WitteSparla2011,
  author    = {Witte, Bertold and Sparla, Peter},
  title     = {Vermessungskunde und Grundlagen der Statistik f{\"u}r das Bauwesen},
  edition   = {7., {\"u}berarb. erw. Aufl.},
  publisher = {Wichmann},
  address   = {Heidelberg},
  isbn      = {978-3-87907-497-6},
  pages     = {XIII, 695 S. : Ill., graph. Darst.},
  year      = {2011},
  language  = {de}
}
@article{WittBogner1990,
  author    = {Witt, Klaus and Bogner, D.},
  title     = {Druckmessung mit zukunftsorientierten Perspektiven},
  series = {Sensor Report. 5 (1990), H. 1},
  journal   = {Sensor Report. 5 (1990), H. 1},
  isbn      = {0179-9592},
  pages     = {8 -- 14},
  year      = {1990},
  language  = {de}
}
@article{WissenbachSixBongaertsetal.1995,
  author    = {Wissenbach, U. and Six, S. and Bongaerts, Johannes and Ternes, D. and Steinwachs, S. and Unden, G.},
  title     = {A third periplasmic transport system for l-arginine in Escherichia coli: molecular characterization of the artPIQMJ genes, arginine binding and transport},
  series = {Molecular microbiology},
  volume    = {Vol. 17},
  journal   = {Molecular microbiology},
  number    = {Iss. 4},
  issn      = {1365-2958 (E-Journal); 0950-382x (Print)},
  pages     = {675 -- 686},
  year      = {1995},
  language  = {en}
}
@article{WissenBogdanskiScheeretal.2005,
  author    = {Wissen, M. and Bogdanski, N. and Scheer, H.-C. and Bitz, Andreas and Ahrens, G. and Gruetzner, G.},
  title     = {Implication of the light polarisation for UV curing of pre-patterned resists},
  series = {Microelectronic Engineering},
  volume    = {78-79},
  journal   = {Microelectronic Engineering},
  issn      = {0167-9317},
  doi       = {10.1016/j.mee.2004.12.099},
  pages     = {659 -- 664},
  year      = {2005},
  language  = {en}
}
@book{Winkler2002,
  author    = {Winkler, Norbert},
  title     = {Zahlentafeln f{\"u}r den Baubetrieb / Hoffmann, Manfred [Hrsg.]. 6., vollst. aktualisierte Aufl. ... Norbert Winkler [Bearb.]},
  publisher = {Teubner},
  address   = {Stuttgart [u.a.]},
  isbn      = {3-519-55220-5},
  pages     = {VII, 889 S. : Ill., graph. Darst.},
  year      = {2002},
  language  = {de}
}
@article{Winkler1995,
  author    = {Winkler, Norbert},
  title     = {Vermessung zur Bauzeit der Zitadelle und heute : Bastion Wilhelmus / von Norbert Winkler},
  series = {4 Bastionen, 4 Aspekte : aktuelle Arbeiten zur Zitadelle J{\"u}lich ; Katalog zur Ausstellung im Hexenturm 10.11.95 - 14.02.96 / [Veranst.: Stadtgeschichtliches Museum J{\"u}lich]. Mit Beitr. von Guido von B{\"u}ren ... [Hrsg.: Marcell Perse]},
  journal   = {4 Bastionen, 4 Aspekte : aktuelle Arbeiten zur Zitadelle J{\"u}lich ; Katalog zur Ausstellung im Hexenturm 10.11.95 - 14.02.96 / [Veranst.: Stadtgeschichtliches Museum J{\"u}lich]. Mit Beitr. von Guido von B{\"u}ren ... [Hrsg.: Marcell Perse]},
  address   = {J{\"u}lich},
  pages     = {77 -- 115},
  year      = {1995},
  language  = {de}
}
@article{Winkler2006,
  author    = {Winkler, Norbert},
  title     = {Vermessung},
  series = {Zahlentafeln f{\"u}r den Baubetrieb / Hoffmann, Manfred ; Kuhlmann, Willy [Hrsg.]. 7., vollst. {\"u}berarb. Aufl.},
  journal   = {Zahlentafeln f{\"u}r den Baubetrieb / Hoffmann, Manfred ; Kuhlmann, Willy [Hrsg.]. 7., vollst. {\"u}berarb. Aufl.},
  publisher = {Teubner},
  address   = {Wiesbaden},
  isbn      = {3-519-65220-X},
  pages     = {147 -- 160},
  year      = {2006},
  language  = {de}
}
@article{Winkler2006,
  author    = {Winkler, Norbert},
  title     = {Vermessung},
  series = {Beispiele f{\"u}r die Baubetriebspraxis / Hoffmann, Manfred ; Kuhlmann, Willy [Hrsg.].},
  journal   = {Beispiele f{\"u}r die Baubetriebspraxis / Hoffmann, Manfred ; Kuhlmann, Willy [Hrsg.].},
  publisher = {Teubner},
  address   = {Wiesbaden},
  isbn      = {978-3-8351-0002-2},
  pages     = {9 -- 34},
  year      = {2006},
  language  = {de}
}