Review of modern vehicle modelling

Earlier models were a simplified form of the complex vehicle system,which was governed by the important parameters and states. these parameters and states were either obtained indirectly through some simplified equations or directly measured using instrumentation. in either case,the models were designed on the basis of parameters and state availability or importance,and not to have a complete model representation and maximum parameter utilization through estimation and instrumentation. since a complete vehicle model can lead to a better controller. without considering all the important parameters,a complete model is not obtained to design better controllers. all types of controllers,classical,optimal,nonlinear and linear controllers use the basic equations that govern the vehicle dynamics. this paper reviews all the previous models with greater insight into each system. the aim is to provide a better understanding of each model,its shortcomings and how it can represent the complex vehicle model.