Article | Proceedings of the 10<sup>th</sup> International Modelica Conference; March 10-12; 2014; Lund; Sweden | Simulation for verification and validation of functional safety
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Title:
Simulation for verification and validation of functional safety
Author:
Lars Mikelsons: Bosch Rexroth AG, Lohr am Main, Germany Zhou Su: Bosch Rexroth AG, Lohr am Main, Germany
DOI:
10.3384/ecp14096455
Download:
Full text (pdf)
Year:
2014
Conference:
Proceedings of the 10th International Modelica Conference; March 10-12; 2014; Lund; Sweden
Issue:
096
Article no.:
048
Pages:
455-464
No. of pages:
10
Publication type:
Abstract and Fulltext
Published:
2014-03-10
ISBN:
978-91-7519-380-9
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


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Safety of machinery is the most critical issue in the design of mechatronic systems. The verification and validation procedure for functional safety of machinery is thoroughly discussed in ISO 13849-2. Following this procedure; the system behavior in case of a component failure has to be analyzed. Up to now this analysis bases on expert knowledge and real experiments. In this contribution a simulation based approach is presented. This approach has several advantages over the state-of-the-art. First; real experiments are more time consuming and costly than simulation. Moreover; according models can be used for further investigations like optimizing the sensor setup.

To enable failure simulation as a substitute of testing on real machinery for validation of functional safety; typical hydraulic failures are added to safety-related components of an in-house Modelica hydraulics library. This library is then used for the verification and validation of functional safety of a hydraulic test bench. Moreover; error propagation is considered.

Keywords: Functional safety; hydraulics; simulation; failure modeling

Proceedings of the 10th International Modelica Conference; March 10-12; 2014; Lund; Sweden

Author:
Lars Mikelsons, Zhou Su
Title:
Simulation for verification and validation of functional safety
DOI:
http://dx.doi.org/10.3384/ecp14096455
References:

[1] ISO 13849-1: Safety of machinery-safety-related parts of control systems - Part 1: General principles for design. International Organization for Standardization (ISO), 2006.

[2] ISO 13849-2: Safety of machinery-safety-related parts of control systems - Part 2: Validation. International Organization for Standardization (ISO), 2010.

[3] Bertsche B. Reliability in Automotive and Mechanical Engineering. VDI-Buch, Springer-Verlag Berlin Heidelberg, 2008.

[4] Barg J., Eisenhut-Fuchsberger F., Orth A. 10 steps to peformance level - Handbook for the implementation of functional safety according to ISO 13849, 2012, Bosch Rexroth AG

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[6] Belmonte F., Schön W., Heurley L., Capel R. Interdisciplinary safety analysis of complex sociotechnological systems based on the functional resonance accident model: An application to railway traffic supervision. In: Reliability Engineering and System Safety, Volume 96, 2010.

[7] Deng A., Britton G., Tor S. Constraint-based functional design verification for conceptual design. In: Computer-Aided Design, Volume 32, 2000.

[8] David P., Idasiak V., Kratz F. Reliability study of complex physical systems using SysML. In:Reliability Engineering and System Safety, Volume 95, 2009.

[9] Schamai W., Fritzson P., Paredis, C., Pop A. Towards unified system modeling and simulation with ModelicaML: modeling of executable behavior using graphical notations, In: Proceedings 7th Modelica Conference, Como, Italy, 2009.

[10] Athanasatos P., Costopoulos T. Proactive fault finding in a 4/3-way direction control valve of a high pressure hydraulic system using the bond graph method with digital simulation, In: Mechanism and Machine Theory, Volume 50, 2012.

Proceedings of the 10th International Modelica Conference; March 10-12; 2014; Lund; Sweden

Author:
Lars Mikelsons, Zhou Su
Title:
Simulation for verification and validation of functional safety
DOI:
http://dx.doi.org/10.3384/ecp14096455
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