Unknown Road Profile Input Estimation with Two Levels of Complexity Models

Abstract:

Most advanced driver assistance systems (ADAS) are intended to improve ride comfort for vehicle suspension systems. A new road estimation method is proposed as a means of observing the road profile level. To achieve this, two complexity levels (quarter car and half car models) are presented and developed in Matlab to analyze the vertical vibration of a vehicle. The unknown input observers are then designed for observing unknown states and road profile level. The necessary measurements are the accelerations of the centers of the wheels. The results of simulations conducted with random road excitation show successfully simulated experimentations of the method using a realistic simulator as well as its robustness.

• Periodical: International Journal of Engineering Research in Africa (Volume 50)
• Pages: 113-130
• DOI: https://doi.org/10.4028/www.scientific.net/JERA.50.113
• Online since: September 2020
• Authors: Fatima Ezzahra Saber*, Mohamed Ouahi, Abdelmjid Saka
• Keywords: Driver Assistance System, Road Profile, Suspension, Unknown Input Observer, Vehicle Dynamics

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