Frequency-selective adaptive control of a hybrid suspension system

Nils Pletschen, Sebastian Spirk, Boris Lohmann

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

7 Scopus citations

Abstract

This paper deals with a frequency-selective reference model that is used within an adaptive control structure for mechatronic vehicle suspensions. Based on a hybrid actuator configuration which consists of a slow-active actuator and a semi-active damper, the basic idea of the control approach is to emulate the dynamic behavior of a passive, but time-variant reference suspension being optimally attuned for the current driving state. The new reference incorporates the limited bandwidth of the active device in the design step and is also able to address the divergent damping demand of sprung and unsprung mass of modern vehicles. An additional potential of the resulting frequency-selective reference model of up to 25% in comfort is revealed in comparison to the original reference without frequency-dependent properties. However, as suggested by a comparative study in terms of simulation results of a quarter-car setting based on real series suspension components this potential depends heavily on the restrictions that are imposed by the available damper characteristics.

Original languageEnglish
Title of host publication7th IFAC Symposium on Advances in Automotive Control, AAC 2013 - Proceedings
PublisherIFAC Secretariat
Pages237-242
Number of pages6
EditionPART 1
ISBN (Print)9783902823434
DOIs
StatePublished - 2013
Event7th IFAC Symposium on Advances in Automotive Control, AAC 2013 - Tokyo, Japan
Duration: 4 Sep 20137 Sep 2013

Publication series

NameIFAC Proceedings Volumes (IFAC-PapersOnline)
NumberPART 1
Volume7
ISSN (Print)1474-6670

Conference

Conference7th IFAC Symposium on Advances in Automotive Control, AAC 2013
Country/TerritoryJapan
CityTokyo
Period4/09/137/09/13

Keywords

  • Active suspensions
  • Adaptive control
  • Frequency-dependent characteristics
  • Semi-active dampers
  • Vehicle dynamics

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