A practical and effective approach to active suspension control

Y. Zhang, A. Alleyne

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


A new approach to the control of Automotive Active Suspensions driven by electrohydraulic actuators is presented. Many studies on Active Suspensions focused on implementing a desired force between sprung and unsprung masses. It is shown why the introduction of this controllable force is difficult to achieve. A novel reformulation of the Active Suspension problem, based on prescribing a given displacement between the sprung and unsprung masses, is introduced and the advantages of this approach are discussed. As a result of the reformulation, the Active Suspension problem is transformed from previously examined 'force-tracking' problems to a 'displacement-tracking' problem. Once the reformulation is accomplished, the ability for a well designed servo-control methodology to achieve the desired tracking goals is increased for the particular hardware configuration considered in this work, subject to fundamental limitations on control-plant structure. Experimental results which demonstrate the benefits of this approach are presented on a 1 degree of freedom (DOF) system.

Original languageEnglish (US)
Pages (from-to)305-330
Number of pages26
JournalVehicle System Dynamics
Issue number5
StatePublished - May 2005
Externally publishedYes

Bibliographical note

Funding Information:
*Corresponding author. Email: alleyne@uiuc.edu †This work is partially supported by NSF CMS99-00116. A previous version of this paper was presented at AVEC 2002.


  • Active suspension
  • Control system reformulation
  • Experimental implementation


Dive into the research topics of 'A practical and effective approach to active suspension control'. Together they form a unique fingerprint.

Cite this