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Investigation of Control Algorithms for Semi-Active Suspension Systems Based on a Full Vehicle Model

[+] Author Affiliations
M. A. Ajaj, A. M. Sharaf, S. A. Hegazy

Military Technical College, Cairo, Egypt

Y. H. Hossamel-deen

The Higher Technological Institute, Tenth of Ramadan City, Egypt

Paper No. IMECE2011-63090, pp. 187-197; 11 pages
  • ASME 2011 International Mechanical Engineering Congress and Exposition
  • Volume 9: Transportation Systems; Safety Engineering, Risk Analysis and Reliability Methods; Applied Stochastic Optimization, Uncertainty and Probability
  • Denver, Colorado, USA, November 11–17, 2011
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5495-2
  • Copyright © 2011 by ASME


This paper presents a comprehensive investigation of automotive semi-active suspension control algorithms and compares their characteristics in terms of ride comfort and tire-road holding ability. Particular attention has been paid to the semi-active suspension systems fitted with a shock absorber of dual damping characteristics. Different mathematical models are presented to investigate the ride response considering both simplified and complex vehicle models. Numerical simulation has been carried out through the MATLAB/SIMULINK environment which aids the future development of controllable suspension systems to improve vehicle ride comfort. The results show a considerable improvement of the vehicle ride response using different schemes of semi-active suspension system in particular the modified groundhook control algorithm.

Copyright © 2011 by ASME



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