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Research on Modeling of Hydropneumatic Suspension Based on Fractional Order

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  • Junwei Zhang
  • Sizhong Chen
  • Yuzhuang Zhao
  • Jianbo Feng
  • Chang Liu
  • Ying Fan

Abstract

With such excellent performance as nonlinear stiffness, adjustable vehicle height, and good vibration resistance, hydropneumatic suspension (HS) has been more and more applied to heavy vehicle and engineering vehicle. Traditional modeling methods are still confined to simple models without taking many factors into consideration. A hydropneumatic suspension model based on fractional order (HSM-FO) is built with the advantage of fractional order (FO) in viscoelastic material modeling considering the mechanics property of multiphase medium of HS. Then, the detailed calculation method is proposed based on Oustaloup filtering approximation algorithm. The HSM-FO is implemented in Matlab/Simulink, and the results of comparison among the simulation curve of fractional order, integral order, and the curve of real experiment prove the feasibility and validity of HSM-FO. The damping force property of the suspension system under different fractional orders is also studied. In the end of this paper, several conclusions concerning HSM-FO are drawn according to analysis of simulation.

Suggested Citation

  • Junwei Zhang & Sizhong Chen & Yuzhuang Zhao & Jianbo Feng & Chang Liu & Ying Fan, 2015. "Research on Modeling of Hydropneumatic Suspension Based on Fractional Order," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-11, January.
    • Handle: RePEc:hin:jnlmpe:920279
    DOI: 10.1155/2015/920279
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