Vehicle/road interaction and tyre lateral performance identification

We propose a procedure to identify a basic Pacejka tyre model (H. Pacejka, 1996) based on the use of the vehicle dynamics simulation and measurements. The model uses the seven main coefficients of the lateral Pacejka model. The principle of the procedure consists of an optimization with a trajectory criterion on the coefficient of the lateral tyre model. The trajectory reference is the real trajectory of an instrumented experimental vehicle. The simulator uses the same conditions of the test and only transversal performances are considered unknown. The method allows a good reconstruction of the lateral tyre model for slip angle in the range of 0 to 2 degrees.