Create Vehicle Model using real vehicle

[Anonymous]

I am looking for some advice/methodology to create an accurate model for a vehicle other than using manufacturer data as the information supplied by the manufacturer is proving inaccurate.

I was thinking perhaps having the vehicle in a big space, and marking (then surveying) the track of wheels and corners under different conditions (speed, lock-to-lock time, different manoeuvres) and then using that to calibrate the vehicle model.

Has anybody did something similar before or can provide a suitable methodology to record all the necessary data to create the model.

Thanks

Fabien

[nigel.peters]

Fabian,

I would be interested in working with you on this, several trials have been done but the data is not publicly available.

A couple of things that need to be considered, swept paths are calculated at constant speed, uniform wheel turning rate and assume good tires. Loading of the vehicle also has a slight (sometime very significant) impact on the results. For example, even with out retracting any axles, the cut in point for a multi axle flatbed trailer will move toward the king pin when the trailer is unloaded V when it is loaded to its max capacity. 

What data are the manufacturers supplying with inaccuracies?

Nigel Peters

Autodesk