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<p>The vibration control of structures has attracted much attention of researchers and becoming an integral part of structural systems in recent years. In this paper, an adaptive sliding mode controller is proposed for a Magneto-Rheological (MR) damper integrated into building structures subject to earthquake-excited vibrations. First, the sliding mode controller design for structures vibration suppression is presented based on the static hysteresis model of the Magneto-Rheological damper. Then, a designed adaptive sliding mode control for structural vibration control is investigated, in which a simple adaptive algorithm is used to tune the direct gain of the discontinuous control part in order to compensate the uncertainties which occur in the control. In this study, an example of a three-story structure with one Magneto-Rheological damper installed on the first floor is conducted to evaluate the performance of the controllers. Through the presented example, the seismic responses of the controlled and uncontrolled structures under earthquake excitation are analyzed. The numerical validation results show that the proposed adaptive sliding control scheme can effectively reduce the dynamic time-domain responses when the Magneto-Rheological damper is installed in the structure.</p>

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Adaptive Nonlinear Semi-active Vibration Control of Magnetorheological Damper-Equipped Structures Using a Sliding Mode Controller

  • 期刊论文

  • 发表日期：

    2025年2月11日

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  • Leyla Fali,
  • Abdelkrim Saidi,
  • Khaled Zizouni,
  • Ismail Khalil Bousserhane,
  • Mohamed Djermane

摘要

The vibration control of structures has attracted much attention of researchers and becoming an integral part of structural systems in recent years. In this paper, an adaptive sliding mode controller is proposed for a Magneto-Rheological (MR) damper integrated into building structures subject to earthquake-excited vibrations. First, the sliding mode controller design for structures vibration suppression is presented based on the static hysteresis model of the Magneto-Rheological damper. Then, a designed adaptive sliding mode control for structural vibration control is investigated, in which a simple adaptive algorithm is used to tune the direct gain of the discontinuous control part in order to compensate the uncertainties which occur in the control. In this study, an example of a three-story structure with one Magneto-Rheological damper installed on the first floor is conducted to evaluate the performance of the controllers. Through the presented example, the seismic responses of the controlled and uncontrolled structures under earthquake excitation are analyzed. The numerical validation results show that the proposed adaptive sliding control scheme can effectively reduce the dynamic time-domain responses when the Magneto-Rheological damper is installed in the structure.