A Compact Variable Stiffness and Damping Shock Absorber for Vehicle Suspension

Shuaishuai Sun, Huaxia Deng, Haiping Du, Weihua Li, Jian Yang, Guiping Liu, Gursel Alici, Tianhong Yan

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)


A shock absorber is an important device for vehicle suspension. The semi-active suspension requires the damping or stiffness of the shock absorber to be controllable. This paper proposed a novel compact shock absorber with both damping and stiffness variable characteristics. The shock absorber is developed based on MR fluid through an innovative design. A prototype is tested by MTS to characterize the variable damping and stiffness properties. A mathematical model that incorporated the Bingham model is established and an optimization method is adopted to identify the parameters. The coherence of experiments and the proposed model verified the control ability of dual damping and stiffness of the shock absorber.

Original languageEnglish
Article number7086317
Pages (from-to)2621-2629
Number of pages9
JournalIEEE/ASME Transactions on Mechatronics
Issue number5
Publication statusPublished - 2015 Oct 1
Externally publishedYes


  • MR damper
  • Semi-active vehicle suspension
  • Shock absorber
  • Variable stiffness and damping

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering


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