New adaptive approach for road condition identification in ASR control system

A tire-road adaptive model in longitude direction to formulate the dynamic characteristic between tire and road is proposed, based on this model, an adaptive approach of road condition identification is presented to identify the model's parameters on-line in order to improve the performance of anti-slip regulation system (ASR). The optimal slip is determined by using the drive wheel's slip and longitude traction force in ASR before the slipping of the drive wheel. Co-simulation is done based on the model for JETTA GTX building with ADAMS/CAR and Matlab, and results show that the adaptive model accords with Pacejka model very well. This adaptive model has simpler form, less number of parameters and higher adaptability than usual, and the identification approach has a small amounts of operation, which is very suitable for ASR.