Room: G29, R320
Phone: +49 391 67 52662
I graduated at the Otto-von-Guericke University of Magdeburg in 2013 with a Master of Engineering in Systems Engineering and Engineering Cybernetics. Since 2013 I am working as a researcher in the CSE team.
Tanja Hebecker
Publications
2016 |
Filax, Marco; Gonschorek, Tim; Hebecker, Tanja; Lipaczewski, Michael; Madalinski, Agnes; Ortmeier, Frank; Fietze, Mario; Schumacher, Rolf Der Eisenbahn Ingenieur, S. 24 -27, 2016. @article{ei2016, title = {Bringing formal methods “on the rail” - Modellbasierte Systemanalyse in der Sicherheitsnachweisf\"{u}hrung}, author = {Marco Filax and Tim Gonschorek and Tanja Hebecker and Michael Lipaczewski and Agnes Madalinski and Frank Ortmeier and Mario Fietze and Rolf Schumacher}, editor = {Verband Deutscher Eisenbahn-Ingenieure E.V.}, url = {https://cse.cs.ovgu.de/cse-wordpress/wp-content/uploads/2016/08/Ver\"{o}ffentlichung-Eisenbahningeneur.pdf}, year = {2016}, date = {2016-01-01}, journal = {Der Eisenbahn Ingenieur}, pages = {24 -27}, abstract = {Funktionen sicherheitskritischer Systeme im Eisenbahnsektor werden entsprechend ihrer tolerierbaren Gef\"{a}hrdungsraten in sogenannte Sicherheitsintegrit\"{a}tslevel (SIL 1-4) eingestuft. In der europ\"{a}ischen Norm EN50129 besteht, f\"{u}r die Stufen drei und vier, die dringende Empfehlung, im Entwicklungs- und Spezifikationsprozess, formale Methoden anzuwenden. Die Otto-von-Guericke-Universit\"{a}t Magdeburg hat dazu, begleitet durch das Eisenbahn-Bundesamt (EBA) und Gutachtern des EBA, einen Satz unterst\"{u}tzender Werkzeuge und Verfahren entwickelt, welche in diesem Artikel, am Beispiel der Punktf\"{o}rmigen Zugbeeinflussung (PZB), vorgestellt werden sollen. Diese Werkzeuge erm\"{o}glichen die Portierung einer nat\"{u}rlichsprachlichen Systemanforderungsspezifikation in ein formales Modell, mit dessen Hilfe die Konsistenz und Vollst\"{a}ndigkeit der Systembeschreibung, sowie die definierten Sicherheitsanforderungen formal \"{u}berpr\"{u}ft werden k\"{o}nnen. Bereits in fr\"{u}hen Entwicklungsphasen k\"{o}nnen automatisiert qualitative und quantitative Absch\"{a}tzungen \"{u}ber die Sicherheit und Zuverl\"{a}ssigkeit mit pr\"{a}zisen und aussagekr\"{a}ftigen Resultaten berechnet werden. Gleichzeitig wird der Aufwand zur endg\"{u}ltigen, sicherheitstechnischen Bewertung durch vollst\"{a}ndige Traceability als Teil des Zertifizierungs- und Zulassungsprozesses reduziert.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Funktionen sicherheitskritischer Systeme im Eisenbahnsektor werden entsprechend ihrer tolerierbaren Gefährdungsraten in sogenannte Sicherheitsintegritätslevel (SIL 1-4) eingestuft. In der europäischen Norm EN50129 besteht, für die Stufen drei und vier, die dringende Empfehlung, im Entwicklungs- und Spezifikationsprozess, formale Methoden anzuwenden. Die Otto-von-Guericke-Universität Magdeburg hat dazu, begleitet durch das Eisenbahn-Bundesamt (EBA) und Gutachtern des EBA, einen Satz unterstützender Werkzeuge und Verfahren entwickelt, welche in diesem Artikel, am Beispiel der Punktförmigen Zugbeeinflussung (PZB), vorgestellt werden sollen. Diese Werkzeuge ermöglichen die Portierung einer natürlichsprachlichen Systemanforderungsspezifikation in ein formales Modell, mit dessen Hilfe die Konsistenz und Vollständigkeit der Systembeschreibung, sowie die definierten Sicherheitsanforderungen formal überprüft werden können. Bereits in frühen Entwicklungsphasen können automatisiert qualitative und quantitative Abschätzungen über die Sicherheit und Zuverlässigkeit mit präzisen und aussagekräftigen Resultaten berechnet werden. Gleichzeitig wird der Aufwand zur endgültigen, sicherheitstechnischen Bewertung durch vollständige Traceability als Teil des Zertifizierungs- und Zulassungsprozesses reduziert. |
2015 |
Hebecker, Tanja; Ortmeier, Frank Safe Prediction-Based Local Path Planning using Obstacle Probability Sections Inproceedings Laugier, Christian; Martinet, Philippe; Nunes, Urbano; stiller, Christoph (Hrsg.): Proceedings of the 7th IROS Workshop on Planning, Perception and Navigation for Intelligent Vehicles, S. 183 - 188, 2015. @inproceedings{Hebecker2015, title = {Safe Prediction-Based Local Path Planning using Obstacle Probability Sections}, author = {Tanja Hebecker and Frank Ortmeier}, editor = {Christian Laugier and Philippe Martinet and Urbano Nunes and Christoph stiller }, url = {https://cse.cs.ovgu.de/cse-wordpress/wp-content/uploads/2016/02/hebecker2015_SafePrediction-basedLocalPathPlanningUsingObstacleProbability.pdf}, year = {2015}, date = {2015-09-28}, booktitle = {Proceedings of the 7th IROS Workshop on Planning, Perception and Navigation for Intelligent Vehicles}, pages = {183 - 188}, abstract = {Autonomous mobile robots gain more and more importance. In the nearest future they will be a part of everyday life. Therefore, it is critical to make them as reliable and safe as possible. We present a local path planner that shall ensure safety in an environment cluttered with unexpectedly moving obstacles. In this paper, the motion of obstacles is predicted by generating probability sections, and collision risks of path configurations are checked by determining whether these configurations lead inevitably to a collision or not. The presented approach worked efficiently in scenarios with static and dynamic obstacles.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } Autonomous mobile robots gain more and more importance. In the nearest future they will be a part of everyday life. Therefore, it is critical to make them as reliable and safe as possible. We present a local path planner that shall ensure safety in an environment cluttered with unexpectedly moving obstacles. In this paper, the motion of obstacles is predicted by generating probability sections, and collision risks of path configurations are checked by determining whether these configurations lead inevitably to a collision or not. The presented approach worked efficiently in scenarios with static and dynamic obstacles. |
2014 |
Hebecker, Tanja; Buchholz, Robert; Ortmeier, Frank Model-Based Local Path Planning for UAVs Artikel Journal of Intelligent & Robotic Systems, 78 , S. 127-142 , 2014, ISSN: 1573-0409. @article{hebecker2014JIRS, title = {Model-Based Local Path Planning for UAVs}, author = { Tanja Hebecker and Robert Buchholz and Frank Ortmeier}, editor = {Springer Netherlands}, url = {https://cse.cs.ovgu.de/cse-wordpress/wp-content/uploads/2015/05/10.1007_s10846-014-0097-72.pdf http://link.springer.com/article/10.1007/s10846-014-0097-7}, doi = {10.1007/s10846-014-0097-7}, issn = {1573-0409}, year = {2014}, date = {2014-08-01}, journal = {Journal of Intelligent & Robotic Systems}, volume = {78}, pages = {127-142 }, abstract = {Autonomous aviation continuously becomes more and more important. Algorithms that enable this autonomy have developed quickly in the last years. This paper describes a concept for a reactive path planning algorithm. The aim is to develop a method for static obstacle avoidance of an unmanned aerial vehicle (UAV) by calculating collision-free paths within the field of view of a UAV’s obstacle detection sensor. In contrast to other algorithms, this method considers the properties of the obstacle detection sensors, plans paths that the UAV is able to track, and is applied in three-dimensional space without access to an inner loop controller. In this work we represent the field of view of a UAV as a grid map and apply the wavefront algorithm as the local path planning algorithm. We reduce the configuration space of UAVs within the field of view by calculating an approximated worst-case reachable set based on a linearized reference model. We evaluate the method with approximated specifications for the unmanned helicopters ARTIS and Yamaha RMAX, and with specifications for the obstacle detection sensors LIDAR \textendash and stereo camera. Experiments show that this method is able to generate collision-free paths in a region constricted by obstacles.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Autonomous aviation continuously becomes more and more important. Algorithms that enable this autonomy have developed quickly in the last years. This paper describes a concept for a reactive path planning algorithm. The aim is to develop a method for static obstacle avoidance of an unmanned aerial vehicle (UAV) by calculating collision-free paths within the field of view of a UAV’s obstacle detection sensor. In contrast to other algorithms, this method considers the properties of the obstacle detection sensors, plans paths that the UAV is able to track, and is applied in three-dimensional space without access to an inner loop controller. In this work we represent the field of view of a UAV as a grid map and apply the wavefront algorithm as the local path planning algorithm. We reduce the configuration space of UAVs within the field of view by calculating an approximated worst-case reachable set based on a linearized reference model. We evaluate the method with approximated specifications for the unmanned helicopters ARTIS and Yamaha RMAX, and with specifications for the obstacle detection sensors LIDAR – and stereo camera. Experiments show that this method is able to generate collision-free paths in a region constricted by obstacles. |
Mäurer, Lukas; Hebecker, Tanja; Stolte, Torben; Lipaczewski, Michael; Möhrstädt, Uwe; Ortmeier, Frank On Bringing Object-Oriented Software Metrics into the Model-Based World - Verifying ISO 26262 Compliance in Simulink Inproceedings Publishing, Springer International (Hrsg.): System analysis and modeling: models and reusability. - Berlin [u.a.] : Springer, S. 207-222, Springer, 2014, ISBN: 978-3-319-11743-0. @inproceedings{FODB:80901022, title = {On Bringing Object-Oriented Software Metrics into the Model-Based World - Verifying ISO 26262 Compliance in Simulink}, author = { Lukas M\"{a}urer and Tanja Hebecker and Torben Stolte and Michael Lipaczewski and Uwe M\"{o}hrst\"{a}dt and Frank Ortmeier}, editor = {Springer International Publishing}, url = {https://cse.cs.ovgu.de/cse-wordpress/wp-content/uploads/2015/05/maeurer2014SAM.pdf http://link.springer.com/chapter/10.1007%2F978-3-319-11743-0_15}, doi = {10.1007/978-3-319-11743-0_15}, isbn = {978-3-319-11743-0}, year = {2014}, date = {2014-01-01}, booktitle = {System analysis and modeling: models and reusability. - Berlin [u.a.] : Springer}, pages = {207-222}, publisher = {Springer}, series = {Lecture notes in computer science; 8769}, abstract = {For ensuring functional safety of electrical/electronic systems, it is necessary to exclude malfunctions from hardware and software as well as from the interaction of both. In today’s passenger vehicles, more and more safety critical functionalities are implemented in software. Thus, its importance for functional safety increases. The dominating safety standard for the automotive domain (ISO 26262) considers the software part and defines requirements for safety critical software. However, applying and fulfilling the standard is a major problem in industry. In this context, the paper presents a novel metric-based approach to evaluate dataflow-oriented software architectures used in many model-driven processes regarding the fulfillment of requirements defined by ISO 26262 (in particular part 6). The core idea is to derive metrics for model-based software from already existing, well-performing metrics elaborated for other programming paradigms. To link metrics to requirements fulfillment of ISO 26262, we briefly sketch the factor-criteriametrics paradigm for this problem. Technically, this paper presents a generic meta-model for dataflow systems, which is used to define the metrics. We implemented this meta-model and the metrics as a prototype for Matlab Simulink. As examples, two models of a 400 kW full Drive-by- Wire experimental vehicle with all-wheel-steering, all-wheel-drive, and electro-mechanical brakes are analyzed using this prototype.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } For ensuring functional safety of electrical/electronic systems, it is necessary to exclude malfunctions from hardware and software as well as from the interaction of both. In today’s passenger vehicles, more and more safety critical functionalities are implemented in software. Thus, its importance for functional safety increases. The dominating safety standard for the automotive domain (ISO 26262) considers the software part and defines requirements for safety critical software. However, applying and fulfilling the standard is a major problem in industry. In this context, the paper presents a novel metric-based approach to evaluate dataflow-oriented software architectures used in many model-driven processes regarding the fulfillment of requirements defined by ISO 26262 (in particular part 6). The core idea is to derive metrics for model-based software from already existing, well-performing metrics elaborated for other programming paradigms. To link metrics to requirements fulfillment of ISO 26262, we briefly sketch the factor-criteriametrics paradigm for this problem. Technically, this paper presents a generic meta-model for dataflow systems, which is used to define the metrics. We implemented this meta-model and the metrics as a prototype for Matlab Simulink. As examples, two models of a 400 kW full Drive-by- Wire experimental vehicle with all-wheel-steering, all-wheel-drive, and electro-mechanical brakes are analyzed using this prototype. |