Article | Proceedings of 15:th Scandinavian International Conference on Fluid Power, June 7-9, 2017, Linköping, Sweden | Enhancing safety of independent metering systems for mobile machines by means of fault detection
Göm menyn

Title:
Enhancing safety of independent metering systems for mobile machines by means of fault detection
Author:
B. Beck: Technische Universität Dresden, Dresden, Germany J. Weber: Technische Universität Dresden, Dresden, Germany
DOI:
10.3384/ecp1714492
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Full text (pdf)
Year:
2017
Conference:
Proceedings of 15:th Scandinavian International Conference on Fluid Power, June 7-9, 2017, Linköping, Sweden
Issue:
144
Article no.:
009
Pages:
92-102
No. of pages:
11
Publication type:
Abstract and Fulltext
Published:
2017-12-20
ISBN:
978-91-7685-369-6
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press, Linköpings universitet


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Systems with independent metering offer a high potential for increasing the functionality and efficiency of valve-controlled hydraulic drives. But nowadays there are only a few prototypical applications. One reason for that are the so far insufficient safety investigations. Besides the structural investigations carried out at the research institute, this contribution deals with a fault detection by means of limit checking of the applied pressure sensors. A detection algorithm is derived from several software-in-the-loop simulations of the independent metering system applied at an excavator arm. The functionality and limits of the fault detection will be shown by means of measurements. As a result, all safety-critical faults can be detected which leads to a Diagnostic Coverage of DC = 99% and thus allows the use of independent metering up to a Performance Level PL = e.



Keywords: Hydraulic systems, independent metering, machine safety, ISO 13849, fault detection

Proceedings of 15:th Scandinavian International Conference on Fluid Power, June 7-9, 2017, Linköping, Sweden

Author:
B. Beck, J. Weber
Title:
Enhancing safety of independent metering systems for mobile machines by means of fault detection
DOI:
http://dx.doi.org/10.3384/ecp1714492
References:
No references available

Proceedings of 15:th Scandinavian International Conference on Fluid Power, June 7-9, 2017, Linköping, Sweden

Author:
B. Beck, J. Weber
Title:
Enhancing safety of independent metering systems for mobile machines by means of fault detection
DOI:
http://dx.doi.org/10.3384/ecp1714492
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Last updated: 2017-02-21