Active seismic isolation control taking account of actuator saturation

Noriaki Itagaki, Hidekazu Nishimura

Research output: Contribution to journalArticlepeer-review


In this paper we propose a design method for active seismic isolation control taking account of actuator saturation. By using a hyperbolic tangential function that is differentiable to controller output, we formulate the linear parameter varying system according to the controller output and design a gain-scheduled controller. By carrying out simulations and experiments of seismic excitation, our proposed gain-scheduled controller is compared with an H∞. fixed controller or a sliding mode controller. It is verified that the proposed controller maintains performance of isolation even if a large earthquake with which the actuator saturation occurs comes, although the other controllers lower the performance than uncontrolled case.

Original languageEnglish
Pages (from-to)426-433
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Issue number2
Publication statusPublished - 2005 Feb
Externally publishedYes


  • Actuator Saturation
  • Gain-Sheduled Control
  • Seismic Motion
  • Vibration Control
  • Vibration Isolation

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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