Fuzzy Semiactive Vibration Control of Structures Using Magnetorheological Elastomer
Fuzzy Semiactive Vibration Control of Structures Using Magnetorheological Elastomer
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DOI：
10.1155/2017/3651057
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发表时间：
2017
影响因子：
1.6
通讯作者：
Xuan Bao Nguyen;T. Komatsuzaki;Y. Iwata;H. Asanuma
中科院分区：
文献类型：
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作者：
Xuan Bao Nguyen;T. Komatsuzaki;Y. Iwata;H. Asanuma
在这项研究中，一种新型的变刚度隔振器，使用磁流变弹性体（MREs）伴随着模糊半主动振动控制的发展。首先，系统地阐明了磁流变阻尼器在剪切模式下的粘弹性特性，为控制器的设计提供了数学基础。其次，基于李雅普诺夫理论和磁流变阻尼器的动力学特性，提出了一种模糊半主动振动控制策略，以最小化隔振器的运动。在传统的半主动控制算法中，磁流变隔振器的指令电流被设定为最小值或最大值，这会周期性地产生高加速度和加加速度峰值，从而导致系统整体品质的退化。然而，这里提出的模糊半主动算法能够产生足够的施加电流，从而理想地产生粘弹性力。所开发的隔离器的有效性进行了评估，通过MATLAB仿真和实验的无源系统和开关型半主动控制器的系统的性能进行比较。结果表明，该控制器成功地克服了传统开关半主动控制的缺点。
In this research, a novel variable stiffness vibration isolator that uses magnetorheological elastomers (MREs) accompanied with a fuzzy semiactive vibration control was developed. Firstly, the viscoelastic characteristics of MREs in shear mode were clarified systematically in order to achieve a mathematical basis for the controller development. Secondly, the fuzzy semiactive vibration control with a strategy based on the Lyapunov theory and dynamic characteristic of MREs was proposed for minimizing the movement of the isolator. In the conventional semiactive algorithm, the command applied current of MRE-based isolator is set at either minimum or maximum value which causes high acceleration and jerk peaks periodically, thus leading to the degeneration of the overall system quality. However, the fuzzy semiactive algorithm presented here is able to produce the sufficient applied current and thus viscoelastic force is desirably produced. The effectiveness of the developed isolator was evaluated numerically by MATLAB simulation and experimentally in comparison with the performances of a passive system and a system with on-off type semiactive controller. The results showed that the developed controller was successful in overcoming the disadvantages of conventional on-off semiactive control.