Validation Of Vehicle Longitudinal Model

Suboh, Muhammad Iqbal (2021) Validation Of Vehicle Longitudinal Model. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This thesis presents the derivation and validation of full vehicle model to investigate the behavior of vehicle dynamic in longitudinal direction. The model consists of handling and tyre subsystem, an automatic transmission subsystem and an engine model subsystem. The vehicle longitudinal model is an important model to be used in analyzing the performance of a vehicle either in accelerating or sudden braking test in longitudinal direction. The vehicle motion in longitudinal direction is developed by Matlab Simulink and validate the results by conducting the experiment using real vehicle which is 5 degree of freedom (DOF) of full vehicle model. The experiment was conducted for the purpose of validation. The experiment testing are acceleration then sudden braking test. There are several behaviors were observed in this study such as body longitudinal velocity, tyre longitudinal slip and wheel linear velocity at each of wheel car. Comparison of the experimental results from acceleration then sudden braking test were made in this study. The results of these study show a good trend between the simulation results and experimental results. There was a bit of error while doing the validation process, but it was not affecting the results of validation and the error occur was acceptable.

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