基于多级磁流变阻尼器的操纵面振动半主动抑制——阻尼器设计与试验建模

Semi-active flutter suppression for wing aileron system using stepped MR damper——design and modeling of MR damper

提出了利用改变磁场作用面积来改变磁流变阻尼器输出力的思想。设计并制造了纯剪切式的磁流变阻尼器 ,通过改变内部磁场面积而获得分级输出的阻尼力。建立了阻尼器的理论模型并进行了 0 .5～ 2 0 Hz的正弦激励试验。基于试验数据 ,构造并训练自适应神经网络模型 ,并且能够很好地在线跟踪阻尼器的动态特性。

This paper presents a new type of shear mode magnetorheological damper of which the torque is designed to be adjustable by changing the sets number of the coils inside. The harmonic excitation experiment invokes the frequency from 0.5 Hz to 20 Hz. The result shows that the dynamic characteristic of the torque varies with the frequency and the step level. Based on the experimental data, an adaptive neural network model can quick track the curve of the output torque under both different frequency and step level after online training.