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Enhancing Reliability of Drive-by-Wire Control Units by Fault Compensation using Data Fusion
Technical Paper
2004-01-1596
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
As future drive-by-wire systems have no mechanical fallback level, the increased safety requirements need to be met by software-based solutions. The task of the software is to provide services in the field of fault detection and compensation as well as control of redundant hardware structures. Particularly the implementation of fault detection and error correction avoids fatal output of drive-by-wire control units caused by erroneous input signals.
This article describes the implementation of a module compensating faults in the input signals of a vehicle function, which controls the longitudinal dynamics of a truck. The error correction is achieved by means of data fusion. Sensing units consisting of the sensor as well as the preprocessing unit often are provided by external suppliers. In some cases information regarding the characteristics of their output data written on the CAN bus is not available. In order to avoid the time-consuming and costly acquisition of this information a method is presented allowing for the estimation of the data quality. This approach is based on the analysis of the time response, the information content and the estimation of the measurement noise variance of the CAN-data. The quality measures are incorporated in a fuzzy-weighted aggregation of the signals and a subsequent filtering with an information filter.
This article describes how data fusion can be used profitably for the error compensation of fault-tolerant control systems. The estimation method of data characteristics introduced in this paper allows for a substitution of the erroneous signals with a marginal loss in quality. Additionally in the fault free case an improvement of the data quality regarding noise and dynamics can be achieved.
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Authors
- Oliver Rooks - Institute of Industrial Information Technology, Universität Karlsruhe (TH), Germany
- Axel Ramstein - Institute of Industrial Information Technology, Universität Karlsruhe (TH), Germany
- Uwe Kiencke - Institute of Industrial Information Technology, Universität Karlsruhe (TH), Germany
- Armin Sulzmann - DaimlerChrysler Powersystems, Germany
- Gernot Spiegelberg - DaimlerChrysler Powersystems, Germany
Topic
Citation
Rooks, O., Ramstein, A., Kiencke, U., Sulzmann, A. et al., "Enhancing Reliability of Drive-by-Wire Control Units by Fault Compensation using Data Fusion," SAE Technical Paper 2004-01-1596, 2004, https://doi.org/10.4271/2004-01-1596.Also In
In-Vehicle Networks and Software, Electrical Wiring Harnesses, and Electronics and Systems Reliability
Number: SP-1852; Published: 2004-03-08
Number: SP-1852; Published: 2004-03-08
SAE 2004 Transactions Journal of Passenger Cars: Electronic and Electrical Systems
Number: V113-7; Published: 2005-07-05
Number: V113-7; Published: 2005-07-05
References
- Gan Qiang Harris Chris J. Comparison of two measurement fusion methods for kalman-filter-based multisensor data fusion Aerospace and Electronic Systems, IEEE Transactions on 37 1 273 280 2001
- Mehra Raman K. On the identification of variances and adaptive kalman filtering IEEE Transactions on Automatic Control 15 2 175 184 1970
- Nelles Oliver Nonlinear system identification: from classical approaches to neural networks and fuzzy models Springer Verlag Heidelberg 2001
- Roecker J. A. McGillem C. D. Comparison of two-sensor tracking methods based on state vector fusion and measurement fusion Aerospace and Electronic Systems, IEEE Transactions on 24 4 447 449 1988
- Rooks Oliver Armbruster Michael Büchli Serge Sulzmann Armin Spiegelberg Gernot Redundancy management for drive-by-wire computer systems Safecomp 2003 Edinburgh 2003
- Spiegelberg Gernot Ein Beitrag zur Erhhung der Verkehrssicherheit und Funktionalitt von Fahrzeugen unter Einbindung des Antriebstrangmoduls MOT ion X - ACT Dissertation Cuvillier Verlag Göttingen 2002