Spindle Vertical Acceleration Control in Fixed-Reacted Road Test Simulations

2010-01-0283

04/12/2010

Event
SAE 2010 World Congress & Exhibition
Authors Abstract
Content
In inertially-reacted road test simulations, spindle accelerations that are acquired in the field can be replicated precisely and their replication improves the accuracy of the simulations versus simulations in which spindle accelerations are not replicated. In fixed-reacted road test simulations, on the other hand, spindle accelerations are often not replicated due to the belief that doing so will introduce unrealistic loads into the test specimen. Although this is true with regards to the lower frequency range of the control band, it is shown in this paper that replicating spindle accelerations in the upper frequency range of the control band can improve the accuracy of fixed-reacted road test simulations. In order to analyze the effects of spindle vertical acceleration control on suspension loads, models were created for a half vehicle on the road and on a fixed-reacted road test simulator. Differences in spindle loads and in sprung and unsprung mass motions between the two models are discussed. Theoretical and experimental analyses presented in this paper point to the detrimental effects of replicating spindle accelerations at lower frequencies and the beneficial effects of replicating spindle accelerations at higher frequencies.
Meta TagsDetails
DOI
https://doi.org/10.4271/2010-01-0283
Pages
12
Citation
Wu, V., Leblanc, P., Peticca, G., Barnett, G. et al., "Spindle Vertical Acceleration Control in Fixed-Reacted Road Test Simulations," SAE Technical Paper 2010-01-0283, 2010, https://doi.org/10.4271/2010-01-0283.
Additional Details
Publisher
Published
Apr 12, 2010
Product Code
2010-01-0283
Content Type
Technical Paper
Language
English