10 April 2013 H2 optimization of electricity-generating tuned mass dampers for simultaneous vibration control and energy harvesting
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Abstract
The classic tuned mass damper (TMD) is a passive vibration control device composed of an auxiliary mass connected to a vibrating object with a spring and an energy-dissipative element. When its parameters are optimized, it can reduce the vibration effectively. Recently, the authors proposed simultaneous vibration control and energy harvesting from tall buildings by replacing the energy-dissipative element of the TMD with electromagnetic transducers, which is called electricity-generating TMD. However, the electromagnetic transducers and the energy harvesting circuit, the modeling of which is an essentially a RL circuit, will introduce extra dynamics into the system, which has significant influence on the vibration mitigation performance. This paper investigates the influence, by optimizing the parameters. We found that the electricity-generating TMD can provide better vibration mitigation performance than the classic TMD and similar performance as the three-element TMD while harvesting the vibration energy at the same time. This paper utilizes the H2 criterions, which is to minimize the root-mean-square vibration under random excitation. The optimization method is presented in this paper, as well as the concise closed-form solution of the optimal parameters. A case study is also given to illustrate the effectiveness, robustness of the electricity-generating TMD and the sensitivity to the parameter changes.
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Wen Cui, Wen Cui, Xiudong Tang, Xiudong Tang, Lei Zuo, Lei Zuo, } "H2 optimization of electricity-generating tuned mass dampers for simultaneous vibration control and energy harvesting", Proc. SPIE 8688, Active and Passive Smart Structures and Integrated Systems 2013, 86880U (10 April 2013); doi: 10.1117/12.2009841; https://doi.org/10.1117/12.2009841
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