Experimental validation of a new model-based control strategy for a semi-active suspension system

Enrico Pellegrini, Sebastian Spirk, Nils Pletschen, Boris Lohmann

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Aiming at the control of a continuously variable hydraulic semi-active damper, in this paper a dynamic feedforward control approach is combined with a feedback component. In order to track reference forces from higher level suspension controllers, in practice, the damper current inputs are mainly calculated by means of static damper characteristics. Thereby, dynamic effects of the damper force generation are neglected. By taking the dynamic damper behavior into account, the model used in the proposed feedforward control component describes the damper behavior considerably better than the state of the art. Moreover, the additional feedback element further improves the precision of the actual provided damping force. The new concept is validated in real-time experiments on a quarter-car test rig for a semi-active suspension system. Using a skyhook law, its performance is analyzed in comparison to the static characteristic-based control. As better force tracking is provided, the proposed model-based strategy is able to improve ride comfort and ride safety simultaneously.

Original languageEnglish
Title of host publication2012 American Control Conference, ACC 2012
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages515-520
Number of pages6
ISBN (Print)9781457710957
DOIs
StatePublished - 2012
Event2012 American Control Conference, ACC 2012 - Montreal, QC, Canada
Duration: 27 Jun 201229 Jun 2012

Publication series

NameProceedings of the American Control Conference
ISSN (Print)0743-1619

Conference

Conference2012 American Control Conference, ACC 2012
Country/TerritoryCanada
CityMontreal, QC
Period27/06/1229/06/12

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