Study On The Effect Of Different Tire Model On Speed Characteristics Of A Vehicle Model

Mohd Nasrin, Mohd Nashrul Ashraf (2016) Study On The Effect Of Different Tire Model On Speed Characteristics Of A Vehicle Model. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This report studies the modelling and simulation of the vehicle longitudinal motion system. The steps in modelling and derivation of mathematical equation are discussed in this paper. The complete vehicle longitudinal motion model will be developed in Matlab Simulink R2013 software. It consists of engine model, vehicle dynamics, wheel dynamics, longitudinal slip ratio and tire model. For tire model, two tire models (Pacejka and Calspan) will be developed to be combined into the vehicle model and later go through testings in terms of various aspects, which include acceleration performance (Vx), coefficient friction between front tire and road surface (μ), slip ratio (S) and longitudinal force (Fx), purposely to compute the best tire model (either Pacejka tire model or Calspan tire model) for the study of vehicle longitudinal motion. Also, the braking element is eliminated from this study as the main purpose of the study is to analyse the acceleration performance of vehicle model in longitudinal motion, therefore the braking condition is not necessary. Besides that, the automatic transmission will be used in engine model, based on the shift-map logic diagram of modern vehicle. The input throttle setting is constrained to a value between 0-100%. All modelling that involved in this study are developed in Matlab Simulink software.

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