Analysis on the optimal damping ratio on a 2 DOF linear model of vehicle suspension

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Abstract

To obtain the analytical expression of the optimal damping ratio in a 2 DOF linear model of vehicle suspension with zero mean white noise velocity input, making the acceleration of the suspension mass a minimum. Using the transfer function derived from the differential equation of the 2 DOF linear model of vehicle suspension, the special integral is worked out and the optimal damping ratio obtained by resolving for the extremum of the expression. During the deduction, the damping of the tire is neglected. The optimal damping ratio is merely the function of the vehicle structural parameters and has nothing to do with the running conditions. The expression can be used to estimate the suspension damping ratio in the preliminary design phase.

Original languageEnglish
Pages (from-to)1057-1059
Number of pages3
JournalBeijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume28
Issue number12
Publication statusPublished - Dec 2008

Keywords

  • Damping ratio
  • Linear model
  • Vehicle suspension

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