Design by Uncertainty: Towards the Use of Measurement Uncertainty in Real-Time Systems

Ulbrich P, Franzmann FP, Scheler F, Schröder-Preikschat W (2012)

Publication Type: Conference contribution

Publication year: 2012

Publisher: IEEE Computer Society

Edited Volumes: 7th IEEE International Symposium on Industrial Embedded Systems, SIES 2012 - Conference Proceedings

City/Town: Los Alamitos

Pages Range: 275-278

Conference Proceedings Title: Proceedings of the 7th IEEE International Symposium on Industrial Embedded Systems

Event location: Karlsruhe, Germany DE

ISBN: 978-1-4673-2685-8

URI: http://www4.cs.fau.de/Publications/2012/ulbrich_12_sies.pdf

DOI: 10.1109/SIES.2012.6356595

Abstract

Real-time systems usually incorporate a wide variety of challenges: A control engineer, for example, aims for the highest possible control quality achievable. Here, one key element is to minimise the uncertainty of the measurements. This, to put it simple, is the noise of sensor data, which has a negative effect on control. Although measurement uncertainty is well treated in control theory, it is usually ignored in common real-time architectures where temporal properties are the prevalent criteria. Consequently, the communication between control engineers and real-time specialists is rather one way, revolving around deadlines and sampling periods. However, on closer examination, many real-time properties are derived from the measurement uncertainty aspired by the control engineer. Conversely, temporal variations, virtually inevitable in practice, can be represented as measurement uncertainty as well. Tackling the measurement uncertainty should therefore be an interdisciplinary task: The control system respects the actual run-time conditions instead of estimating them. Likewise, the real-time system considers measurement uncertainty rather than blindly sticking to deadlines. In this paper we present an uncertainty-centric approach to leverage measurement uncertainty in real-time architectures, not only at design time but also at run-time. Using measurement uncertainty as an explicit interface minimises the gap between real-time specialists and control engineers and facilitates a modular and flexible system design. Our preliminary results are promising and show the ease of use and the applicability to existing systems. © 2012 IEEE.

Authors with CRIS profile

Peter Ulbrich Lehrstuhl für Informatik 4 (Verteilte Systeme und Betriebssysteme) Florian Peter Franzmann Lehrstuhl für Informatik 4 (Verteilte Systeme und Betriebssysteme) Fabian Scheler Lehrstuhl für Informatik 4 (Verteilte Systeme und Betriebssysteme) Wolfgang Schröder-Preikschat Lehrstuhl für Informatik 4 (Verteilte Systeme und Betriebssysteme)

Related research project(s)

Quality-aware Co-Design of Responsive Real-Time Control Systems (QRONOS) Sept. 1, 2015 - Sept. 30, 2021 Adaptive Responsive Embedded Systems (ESI 2) (ARES) ESI-Anwendungszentrum für die digitale Automatisierung, den digitalen Sport und die Automobilsensorik der Zukunft Jan. 1, 2010 - Dec. 31, 2018 Aspect-Oriented Real-Time Architecture (Phase 1) (AORTA) Aug. 1, 2011 - Aug. 30, 2014

How to cite

APA:

Ulbrich, P., Franzmann, F.P., Scheler, F., & Schröder-Preikschat, W. (2012). Design by Uncertainty: Towards the Use of Measurement Uncertainty in Real-Time Systems. In Proceedings of the 7th IEEE International Symposium on Industrial Embedded Systems (pp. 275-278). Karlsruhe, Germany, DE: Los Alamitos: IEEE Computer Society.

MLA:

Ulbrich, Peter, et al. "Design by Uncertainty: Towards the Use of Measurement Uncertainty in Real-Time Systems." Proceedings of the 7th Symposium on Industrial Embedded Systems (SIES '12), Karlsruhe, Germany Los Alamitos: IEEE Computer Society, 2012. 275-278.

BibTeX: Download