Development Of Vehicle Rollover Prevention System Using Active Braking

Amrik Singh, Phuman Singh and Mohd Azman, Abdullah and Ranjit Singh, Sarban Singh (2014) Development Of Vehicle Rollover Prevention System Using Active Braking. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This research focuses on the development of the vehicle rollover prevention system using active braking. Vehicle rollover occurs typically in vehicles with a high center of gravity, such as sport utility vehicle when it is driven by extreme steering input at high speed. Active braking is one of the methods that could be used to avoid vehicle rollover. Vehicle dynamics model made up of eight degrees of freedom coupled with Dugoff’s tire model is first developed mathematically and then built in the Matlab / SIMULINK environment. Both reduced scale instrumented vehicle and CarSim software were used to validate the vehicle dynamic performance. From the validation results, the proposed vehicle model was able to produce responses similar to that of reduced scale instrumented vehicle and CarSim software. In this project, the active braking system with both PID and Fuzzy controllers were used to control the untripped rollover which occurs due to high lateral acceleration resulting from extensive steering maneuvers. Fishhook and J-turn tests with different longitudinal speed were utilized for control performance evaluation. The implementation of the active braking system with PID and Fuzzy control strategies demonstrated improvement by decreasing the magnitude of the roll angle and rate as well as rollover index. The proposed control strategies were proven to be capable of reducing the roll angle and hence avoiding the vehicle rollover.

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