金属丝网减振器数学建模与参数识别

Mathematical Model and Parameter Identification of Metal-Web Damper

金属丝网弹性元件的阻尼具有滞后非线性特性 ,使得实际系统中阻尼力描述较为因难。在介绍几种非线性模型的基础上 ,主要分析了兼有干摩擦和线性阻尼特性的混合型阻尼模型 ,并以此建立了某金属丝网减振器的数学模型。参数辨识的结果表明 ,该模型能够合理反映兼有不同性质阻尼的滞后非线性特性。

Because the metal web vibration damper exhibits nonlinear hysteresis,it is difficult to describe the damping force exactly in an actual sysytem.The mixed model with linear and dry friction is mainly analyzed based on the description of several nonlinear models,and the model of AAW 400 metal web damper is established.The result of parameter identification shows that this model can reasonably express nonlinear hysteresis with different damping characters.