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Design of Hydractive Optimal Suspension for a Passenger Vehicle

[+] Author Affiliations
Ehsan Sarshari

K. N. Toosi University of Technology, Tehran, Tehran, Iran

Navid Asadi

Amir Kabir University of Technology, Tehran, Tehran, Iran

Reza Yousefi

Sharif University of Technology, Tehran, Tehran, Iran

Paper No. IMECE2010-40630, pp. 351-359; 9 pages
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 8: Dynamic Systems and Control, Parts A and B
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4445-8
  • Copyright © 2010 by ASME


In this study a hydractive suspension system is designed for a passenger car. By using a mathematical validated model with eight degrees of freedom for a vehicle which is equipped with hydractive suspension, optimal damping forces derived for suspension system on the base of optimal control theory which uses linear quadratic regulators for improving ride comfort of vehicle and saves vehicles stability at the same time. Existing limitations for applying damping forces and time lag of controlling component are considered. The results are being derived according to a bump excitation and nonlinearity effects of the hydractive suspension components. Simulation results for the hydractive optimal suspension demonstrate significant improvements of system behavior in all controlled modes in comparison with the passive suspension.

Copyright © 2010 by ASME
Topics: Design , Vehicles



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