In this research, a model-free control strategy for vibration suppression of base-isolated structures, which are excited by an earthquake, is investigated. For this purpose, the semi-active base isolated system including a magnetorheological (MR) damper is utilized. In this way, the displacement of the base isolator is measured by a linear variable differential transformer (LVDT). Accordingly, an adaptive fuzzy sliding mode observer is implemented to estimate the vector of state tracking error. This estimated vector is then employed by an adaptive fuzzy sliding mode control scheme to calculate the input voltage of the MR damper. The efficiency of the implemented model-free control strategy is studied by some numerical simulations. The advantages of the proposed controller can be summarized as its flexibility and robustness against disturbance rejection and model uncertainty.

在这项研究中，研究了一种无模型控制策略，用于抑制受地震激发的基础隔震结构的振动。为此，使用了包括磁流变 ( MR ) 阻尼器的半主动基座隔离系统。这样，基极隔离器的位移由线性可变差动变压器（LVDT）。因此，实现了自适应模糊滑模观测器来估计状态跟踪误差的向量。然后通过自适应模糊滑模控制方案使用这个估计矢量来计算 MR 阻尼器的输入电压。通过一些数值模拟研究了实施的无模型控制策略的效率。所提出的控制器的优点可以概括为它对干扰抑制和模型不确定性的灵活性和鲁棒性。