Friedrich-Alexander-Universität Erlangen-Nürnberg  /   Technische Fakultät  /   Department Informatik

qronOS

Quality-aware Co-Design of Responsive Real-Time Control Systems

Selected Publications

HSCC 2018

Gaukler, Maximilian ; Michalka, Andreas ; Ulbrich, Peter ; Klaus, Tobias:
A New Perspective on Quality Evaluation for Control Systems with Stochastic Timing.
In: ACM (Org.):
Proceedings of the 21st ACM International Conference on Hybrid Systems: Computation and Control (HSCC '18)
(21st ACM International Conference on Hybrid Systems: Computation and Control, Porto, Portugal, 11.-13. April 2018).
2018, pp 91-100.
Keywords: QRONOS
[doi>10.1145/3178126.3178134] (BibTeX)

RTSS 2016
WiP

Klaus, Tobias ; Franzmann, Florian ; Gaukler, Maximilian ; Michalka, Andreas ; Ulbrich, Peter:
Closing the Loop: Towards Control-aware Design of Adaptive Real-Time Systems.
In: IEEE (Ed.) : Proceedings of the 37th Real-Time Systems Symposium Work-in-Progress Session (RTSS WiP '16)
(Real-Time Systems Symposium Work-in-Progress Session, Porto, Portugal, November 29-December 2, 2016).
2016, pp 1-4.
Keywords: QRONOS (BibTeX)

Overview

When driving a car, a human pays full attention when required, but efficiently reduces the mental workload in less critical situations. On the other hand, current control strategies for autonomous cars always pay "full attention" and require precise timing. How can we make real-time control systems efficient and safe at the same time, just like a human can do it intuitively?

Timing plays a particularly important role in the solution for this problem: As control applications are particularly sensitive to timing variations, the Quality of Control (QoC) is degraded by varying execution conditions of the underlying real-time system. This is particularly relevant for modern, adaptive real-time systems, which introduce varying timing conditions for the sake of efficiency increases.

We aim to solve this design conflict by explicitly considering the relation between timing (Quality of Service, QoS) and the resulting Quality of Control both at design- and run-time.

Stochastic QoC-model (HSCC 2018)

At HSCC 2018 we presented an approach towards efficient computation of the Quality of Control in a time-varying stochastic sense (see the full paper and the slides).

The software, which passed the official repeatability evaluation, can be found on GitHub and is GPL3-licensed. The original repatability evaluation archive is also available for download. Re-use and collaboration is appreciated.

Full Publications List

Gaukler, Maximilian ; Michalka, Andreas ; Ulbrich, Peter ; Klaus, Tobias: A New Perspective on Quality Evaluation for Control Systems with Stochastic Timing. In: ACM (Veranst.) : Proceedings of the 21st ACM International Conference on Hybrid Systems: Computation and Control (HSCC '18) (21st ACM International Conference on Hybrid Systems: Computation and Control Porto, Portugal 11.-13. April 2018). 2018, S. 91-100.
[doi>10.1145/3178126.3178134] (BibTeX)

Klaus, Tobias ; Franzmann, Florian ; Gaukler, Maximilian ; Michalka, Andreas ; Ulbrich, Peter: Closing the Loop: Towards Control-aware Design of Adaptive Real-Time Systems. In: IEEE (Hrsg.) : Proceedings of the 37th Real-Time Systems Symposium Work-in-Progress Session (RTSS WiP '16) (Real-Time Systems Symposium Work-in-Progress Session Porto, Portugal November 29-December 2, 2016). 2016, S. 1-4. (BibTeX)

Ulbrich, Peter ; Franzmann, Florian ; Scheler, Fabian ; Schröder-Preikschat, Wolfgang: Design by Uncertainty: Towards the Use of Measurement Uncertainty in Real-Time Systems. In: Nolte, Thomas (Hrsg.) : Proceedings of the 7th IEEE International Symposium on Industrial Embedded Systems (7th Symposium on Industrial Embedded Systems (SIES '12) Karlsruhe, Germany 20-22 June 2012). Los Alamitos : IEEE Computer Society, 2012, S. 275-278. - ISBN 978-1-4673-2685-8
[doi>10.1109/SIES.2012.6356595] (BibTeX)

Franzmann, Florian ; Klaus, Tobias ; Ulbrich, Peter ; Deinhardt, Patrick ; Steffes, Benjamin ; Scheler, Fabian ; Schröder-Preikschat, Wolfgang: From Intent to Effect: Tool-based Generation of Time-Triggered Real-Time Systems on Multi-Core Processors. In: IEEE Computer Society (Hrsg.) : Proceedings of the 19th IEEE Symposium on Real-Time Computing (ISORC '16) (19th IEEE Symposium on Real-Time Computing York, UK May 17-20, 2016). 2016, S. 0-0. - ISBN 978-1-4673-9032-3
[doi>10.1109/ISORC.2016.27] (BibTeX)

Klaus, Tobias ; Franzmann, Florian ; Gaukler, Maximilian ; Michalka, Andreas ; Ulbrich, Peter: Poster Abstract: Closing the Loop: Towards Control-aware Design of Adaptive Real-Time Systems. In: IEEE (Veranst.) : Proceedings of the 37th Real-Time Systems Symposium (RTSS '16) (37th Real-Time Systems Symposium Porto, Portugal November 29-December 2, 2016). 2016, S. 363-363.
[doi>10.1109/RTSS.2016.042] (BibTeX)

Franzmann, Florian ; Klaus, Tobias ; Scheler, Fabian ; Schröder-Preikschat, Wolfgang ; Ulbrich, Peter: React in Time: Ereignisbasierter Entwurf zeitgesteuerter verteilter Systeme. In: Halang, W. A. ; Spinczyk, O. (Hrsg.) : Betriebssysteme und Echtzeit (Echtzeit 2015 Boppard 12.11.2015). 1. Aufl. Berlin, Heidelberg : Springer Vieweg, 2015, S. 89-98. - ISBN 978-3-662-48610-8 (BibTeX)

Ulbrich, Peter ; Franzmann, Florian ; Harkort, Christian ; Hoffmann, Martin ; Klaus, Tobias ; Rebhan, Anja ; Schröder-Preikschat, Wolfgang: Taking Control: Modular and Adaptive Robotics Process Control Systems. In: Payeur, Pierre ; Ben-Tzvi, Pinhas (Hrsg.) : Proceedings of the 10th IEEE International Symposium on Robotic and Sensors Environments (10th IEEE International Symposium on Robotic and Sensors Environments (ROSE '12) Magdeburg 16-18 November 2012). Los Alamitos : IEEE Computer Society, 2012, S. 55-60. - ISBN 978-1-4673-2705-3
[doi>10.1109/ROSE.2012.6402632] (BibTeX)

People Involved in qronOS

Theses

Please contact Peter Ulbrich (real-time system design) or Max Gaukler (control engineering) if you are interested in a thesis in the scope of this research project. Topics will not always be listed online.

Open Topics

Ongoing Theses

Finished Theses