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由于非线性振动系统的非线性本质,基于传统控制理论的线性控制器用于非线性振动控制效果不佳。本文针对非线性振动系统提出了一种模糊自适应滑模控制方案。设计中用模糊逻辑系统逼近未知的非线性函数,基于滑模原理及Lyapunov函数方法给出了该控制系统的稳定性分析。并就典型的VanDelPol形式的非线性强迫振动系统进行了控制仿真研究,结果表明了该方法的有效性
Due to the non-linear nature of nonlinear vibration systems, linear controllers based on traditional control theory are ineffective for nonlinear vibration control. In this paper, a fuzzy adaptive sliding mode control scheme is proposed for nonlinear vibration system. The fuzzy logic system is used to approximate the unknown nonlinear function in the design, and the stability analysis of the control system is given based on the sliding mode principle and Lyapunov function method. The control simulation of a typical VanDelPol nonlinear forced vibration system is carried out. The results show that the proposed method is effective