Active seismic isolation by disturbance-accommodating gain-scheduled control

Noriaki Itagaki, Hidekazu Nishimura

Research output: Contribution to journalArticle

Abstract

In this paper, we propose a design method of a disturbance-accommodating gain-scheduled control taking account of actuator saturation by seismic excitation in vibration isolation for a multi-degree-of-freedom structure. A disturbance model multiplied by an envelope function is introduced for distrubance-accommodating control in order to represent the nonstationary characteristics of seismic disturbance. We formulate a linear parameter varying system according to the amplitude of the disturbance as well as the controller output, and design a gain-scheduled controller. By carrying out simulations and experiments of seismic excitation, it is verified that the proposed controller can maintain the performance of isolation even if a large earthquake with which actuator saturation occurs comes.

Original languageEnglish
Pages (from-to)3107-3114
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume71
Issue number11
Publication statusPublished - 2005 Nov
Externally publishedYes

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Gain control
Controllers
Actuators
Earthquakes
Experiments

Keywords

  • Actuator Saturation
  • Disturbance-Accommodating Control
  • Gain-Scheduled Control
  • Seismic Motion
  • Vibration Control
  • Vibration Isolation

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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