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Analysis of Automotive Damper Data and Design of a Portable Measurement System
Technical Paper
2005-01-1043
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper reviews existing approaches to the estimation of the state of wear of an automotive damper, with the aim of developing a methodology for a quick and effective diagnostic procedure that could be carried out in any repair facility. It has always been desirable to leave the shock absorber in place at the time of such testing, and there are three general procedures that claim to be effective at determining damper wear. This research investigates a method of controlling a short drop of each corner of the vehicle while measuring the acceleration. The acceleration data is then analyzed with the aim of estimating the decay rate of the resulting oscillation, which is known to be related to the damping ratio of the suspension system. The rate of decay is then used to infer the condition of the vehicles damper. The paper reviews the state of the art, describes the methodology and presents experimental validation of a new concept.
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Authors
- Grant Malmedahl - The Ohio State University-Center for Automotive Research
- Steve Guba - The Ohio State University-Center for Automotive Research
- Don Butler - The Ohio State University-Center for Automotive Research
- Giorgio Rizzoni - The Ohio State University-Center for Automotive Research
- Jim Shively - The Ohio State University-Center for Automotive Research
- Ahmed Soliman - The Ohio State University-Center for Automotive Research
Topic
Citation
Malmedahl, G., Guba, S., Butler, D., Rizzoni, G. et al., "Analysis of Automotive Damper Data and Design of a Portable Measurement System," SAE Technical Paper 2005-01-1043, 2005, https://doi.org/10.4271/2005-01-1043.Also In
References
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- “Technical Documentation for the M-Tronic Shock Absorber Test Device Big Red” http://www.m-tronic.de/downloads/etd.pdf January 7 2005
- Tsymberov, Anatoly “An Improved Non-Intrusive Automotive Suspension Testing Apparatus with Means to Determine the Condition of the Dampers,” SAE Paper No. 960735 Society of Automotive Engineers Warrendale, PA 1996
- Palm William J. III Modeling, Analysis, and Control of Dynamic Systems 2nd New York, NY Wiley 1998
- Haedo, Martin J. “Suspension Tester CVA 2003: User Manual,” Buenos Aires, Argentina 2003