HDV Simulink Real World Model for Testing : A Study on Model Simplicity

Abstract:   The purpose of this thesis was to investigate the area of model complexity and see what precautions could be made to avoid the generation of complex models. These findings included five principles stated by M. Pidd which were implemented in the development of a new Simulink real world model of a heavy duty vehicle. The developed model was integrated into a hardware-in-the-loop configuration and parameterized and validated by comparing the new model to the previous model in several advanced emergency brake test cases. Additional testing was done to prove the overall robustness and validity of the new model. With an average relative error of 2% compared to measurement data of the previous model and the additional testing considered passed, the new model was deemed valid and representative of a heavy duty vehicle. The study recommends that further simplifications are done in the hardware integration framework, which have not been targeted in this thesis, to reduce the complexity of the overall model further. All and all the new model met the deliveries and due to its less complex structure and maintained validity it was implemented at the REVT department at Scania CV AB.