Direct instantaneous force control with improved efficiency for four-quadrant operation of linear switched reluctance actuator in active suspension system

Zhu Zhang, Chow Norbert Cheung, Ka Wai Eric Cheng, Xiangdang Xue, Jiongkang Lin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

18 Citations (Scopus)


A direct instantaneous force control with improved efficiency for the linear switched reluctance actuator (LSRA) is proposed in this paper. Four-quadrant operation is investigated for application in the active suspension system. Force ripple minimization is considered as the primary objective due to the direct impact on passenger ride comfort. An adaptive force distribution function based on the instantaneous force feedback is proposed to achieve a ripple-free system. The choice of switching parameters for improved operation efficiency is examined. The optimal switching positions are online adjusted with respect to the force demand. Simulation and experimental results are presented to verify the effectiveness of the proposed control strategy.
Original languageEnglish
Article number6156799
Pages (from-to)1567-1576
Number of pages10
JournalIEEE Transactions on Vehicular Technology
Issue number4
Publication statusPublished - 22 May 2012


  • Active suspension system
  • direct instantaneous force control (DIFC)
  • force distribution function (FDF)
  • linear switched reluctance actuator (LSRA)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Aerospace Engineering
  • Automotive Engineering
  • Computer Networks and Communications
  • Applied Mathematics

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