International Journal of Vehicle Structures and Systems

Nouby M. Ghazaly ¹, Abd El-Nasser S. Ahmed ¹, Ahmed S. Ali ², G. T. Abd El-Jaber ¹

Affiliations
1 Mech. Engg. Dept., South Valley University, Qena, EG
2 Mech. Engg. Dept., College of Engg., Assiut University, Assuit, EG

Abstract

In recent years, the use of active control mechanisms in active suspension systems has attracted considerable attention. The main objective of this research is to develop a mathematical model of an active suspension system that is subjected to excitation from different road profiles and control it using H∞ technique for a quarter car model to improve the ride comfort and road handling. Comparison between passive and active suspension systems is performed using step, sinusoidal and random road profiles. The performance of the H∞ controller is compared with the passive suspension system. It is found that the car body acceleration, suspension deflection and tyre deflection using active suspension system with H∞ technique is better than the passive suspension system.

Keywords

Quarter Car Model, Active Suspension System, Hα Technique, Road Profile, Vertical Acceleration, Suspension Travel.

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