H∞Observer for Damper Force in a Semi-Active Suspension

A.E. Vela, D.H. Alcántara, R.M. Menendez, O. Sename, L. Dugard

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


An H∞ observer for the Semi-Active (SA) force of an Electro-Rheological (ER) damper in a Quarter of Vehicle (QoV) model is proposed. This robust observer is designed in the H∞ framework to minimize the effect of the unknown road disturbance on the force estimation and includes the damper nonlinearities and its dynamic behavior. Simulation and experimental rig tests results using a 1/5 scale car using easily accessible measurements for the observer, such as acceleration sensors, which are relatively cheap and easy to implement in a real environment. The estimated damper force could be used in a state feedback control strategy to improve comfort and road holding performance of a vehicle with a reduced number of sensors.
Original languageEnglish
Pages (from-to)764-769
Number of pages6
JournalIFAC Proceedings Volumes (IFAC-PapersOnline)
Issue number11
Publication statusPublished - 1 Jan 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering


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