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A Novel Dynamic Absorber with Variable Frequency and Damping

机译:一种具有变频和阻尼的新型动态吸收器

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Smoothness and discontinuous (SD) oscillator is a nonlinear oscillator with the variable frequency, whose frequency can be varied with the smoothing parameter. However, how to adjust the smoothing parameter has not been solved in the actual device. In this paper, the shape memory alloy (SMA) is introduced into the SD oscillator to form the SMA-SD oscillator to adjust the smoothing parameters. Combining the SMA-SD oscillator with MRF, a nonlinear dynamic vibration absorber (DVA) with variable frequency and damping is designed. The structure and control principle of the designed DVA is studied to achieve the two variable characteristics simultaneously by adjusting the current intensity. Numerical results on a two-degree-of-freedom coupled system show that the proposed DVA can adapt to different working conditions only by adjusting the current intensity.
机译:光滑度和不连续(SD)振荡器是具有变频的非线性振荡器,其频率可以随平滑参数而变化。 但是,在实际设备中,如何调整平滑参数。 在本文中,将形状记忆合金(SMA)引入SD振荡器以形成SMA-SD振荡器以调节平滑参数。 设计使用MRF的SMA-SD振荡器,设计具有可变频率和阻尼的非线性动态减振器(DVA)。 研究了设计DVA的结构和控制原理,通过调节电流强度来同时实现两个可变特征。 二维自由度耦合系统的数值结果表明,仅通过调整电流强度,所提出的DVA可以适应不同的工作条件。

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