This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Evaluation of Different Designs of Wheel Force Transducers
Annotation ability available
Sector:
Language:
English
Abstract
Wheel force transducers (WFT) play an increasing role in endurance evaluation of road vehicles, ride and handling optimization, tire development and vehicle dynamics. Seven WFT-systems, which split basically into three design categories: strain gaged beam and spoke, individual load cells and mechanically separated load components are looked at in this investigation.
After a general evaluation the two systems which seem to be most promissing are compared in more detail: Angle error correction and material selection (Titanium alloy versus carbon fibre composite) appeared to be the most significant differences of these two systems.
FE-temperature analysis shows that during downhill braking temperature limits of the carbon fibre material are reached or exceeded. As in addition manufacturing of the special wheels (also partly made of carbon fibre) is expensive and cannot be done by the customer, using light weight metals seems to be the better choice.
Due to suspension kinematics the knuckle rotates relatively to the vehicle body. All WFT-systems connecting the angle encoder to this component show significant errors (called “angle error”) in the vertical direction force Fz, moment Mz (up to 10%) and in the longitudinal direction force Fx, moment Mx (up to and even more than 100%). Thus an “angle error”-correction system is crucial.
Recommended Content
Technical Paper | Evaluation of Different Designs of Wheel Force Transducers (Part II) |
Technical Paper | DEVELOPMENT OF A FLAT SURFACE TIRE ROLLING RESISTANCE FACILITY |
Ground Vehicle Standard | Off-Road Tire Replacement Guidelines |
Authors
Topic
Citation
Weiblen, W. and Hofmann, T., "Evaluation of Different Designs of Wheel Force Transducers," SAE Technical Paper 980262, 1998, https://doi.org/10.4271/980262.Also In
References
- Weiblen, Walter Bernd Oelmann Measurement of Multiaxial Wheel Forces and Application of the Results for the Fatigue Life Evaluation of Vehicles SIAT '96/SAE tech. Paper 962505 329 336 Pune, India 1996
- Seiffert, U. 1992 207 242
- 1990
- Loh, R. Nohl F. 1989
- Kötzle, Horst Weiblen Walter Gerhard Jacoby Active Restraining System for Axle and Complete Car Test Rigs Techn. Paper 930255 SAE Detroit 1993
- Kötzle, Horst Weiblen Walter Gerhard Jacoby Mercedes-Benz Roadway Simulation Concept Engineering Integrity Society Conference Stradford upon Avon 1993
- Hofmann, Thomas University of Stuttgart 1997
- Schulte, K. 18 103 110 1987
- Goetting, H.C. Kirschke L. Prinz R. 1987