Abstract
The aim of this study was to produce the parameters of "Magic Formula" tire model using the measured data of vehicle running on actual roads. To obtain those data, the newly measuring system was constructed, which were composed from the multi-component force transducer to measure the tire forces, the laser displacement sensors to measure the camber angle and the ultra-light CCD camera to measure the slip angle of a wheel by the technique of the image processing. The identification method which can derive the Magic Formula parameters from the measured data sets by adding the appropriate constraint conditions in the optimization calculation, was then developed with the use of Matlab. Finally, the model obtained from above process is compared and discussed with the model produced from the measured results on the indoor test bench.