Simultaneous energy harvesting and vibration control of structures with tuned mass dampers

2012 ◽  
Vol 23 (18) ◽  
pp. 2117-2127 ◽  
Author(s):  
Xiudong Tang ◽  
Lei Zuo
Keyword(s):  
Energy Harvesting ◽  
Vibration Control ◽  
Control Strategies ◽  
Tall Buildings ◽  
Tuned Mass Damper ◽  
Vibration Energy ◽  
Damping Force ◽  
Tuned Mass Dampers ◽  
Mass Damper ◽  
Self Powered

The vibrations of the tall buildings are serious concerns to both engineers and architects for the protection of the safety of the structure and occupant comfort. In order to mitigate the vibration, different approaches have been proposed, among which tuned mass dampers are one of the most preferable and have been widely used in practice. Instead of dissipating the vibration energy into heat waste via the viscous damping element, this article presents an approach to harvest the vibration energy from tall buildings with tuned mass dampers, by replacing the energy-dissipating element with an electromagnetic harvester. This article demonstrates that vibration mitigation and energy harvesting can be achieved simultaneously by the utilization of an electricity-generating tuned mass damper and relevant algorithms. Based on the proposed switching energy harvesting circuit, three control strategies are investigated in this article, namely, semi-active, self-powered active, and passive-matching regenerative. The functions of the energy harvesting circuit on damping force control and power regulation, as well the effectiveness of the control strategies, are illustrated by simulation. The simultaneous energy harvesting and vibration control are demonstrated, for the first time, by experiment based on a three-story building prototype with the electricity-generating tuned mass damper, which is composed of a rotational brushed direct current motor and rack–pinion mechanism.

scholarly journals Exact H2 Optimal Tuning and Experimental Verification of Energy-Harvesting Series Electromagnetic Tuned-Mass Dampers

2016 ◽  
Vol 138 (6) ◽  
Author(s):  
Yilun Liu ◽  
Chi-Chang Lin ◽  
Jason Parker ◽  
Lei Zuo
Keyword(s):  
Numerical Analysis ◽  
Energy Harvesting ◽  
Vibration Control ◽  
Primary Structure ◽  
Tuned Mass Damper ◽  
Mean Square ◽  
Tuned Mass Dampers ◽  
Vibration Mitigation ◽  
Dual Functional ◽  
Mass Damper

Energy-harvesting series electromagnetic-tuned mass dampers (EMTMDs) have been recently proposed for dual-functional energy harvesting and robust vibration control by integrating the tuned mass damper (TMD) and electromagnetic shunted resonant damping. In this paper, we derive ready-to-use analytical tuning laws for the energy-harvesting series EMTMD system when the primary structure is subjected to force or ground excitations. Both vibration mitigation and energy-harvesting performances are optimized using H2 criteria to minimize root-mean-square (RMS) values of the deformation of the primary structure or maximize the average harvestable power. These analytical tuning laws can easily guide the design of series EMTMDs under various external excitations. Later, extensive numerical analysis is presented to show the effectiveness of the series EMTMDs. The numerical analysis shows that the series EMTMD more effectively mitigates the vibration of the primary structure nearly across the whole frequency spectrum, compared to that of classic TMDs. Simultaneously, the series EMTMD can better harvest energy due to its broader bandwidth effect. Beyond simulations, this paper also experimentally verifies the effectiveness of the series EMTMDs in both vibration mitigation and energy harvesting.

Vibration Control Performance of Damping Coupled Tuned Mass Dampers

2004 ◽  
Author(s):  
Nobuo Masaki ◽  
Hisashi Hirata
Keyword(s):  
Vibration Control ◽  
Natural Frequency ◽  
Tuned Mass Damper ◽  
Control Performance ◽  
Tuned Mass Dampers ◽  
Mass Unit ◽  
Optimal Value ◽  
Mass Damper ◽  
Rubber Bearings ◽  
Prefabricated Houses

Recently tuned mass dampers have been installed on three-story prefabricated houses for reducing of traffic-induced vibration and improving living comfort. This tuned mass damper consists of a mass unit, spring units and laminated rubber bearings. The mass is supported by four laminated rubber bearings, and spring units are used for adjusting the natural frequency of the tuned mass damper to the optimal value. Vibration control performance of this type of tuned mass dampers is deteriorated when the natural frequency of the house is changed. To solve this problem, the authors have developed a damping coupled tuned mass damper. In this type of tuned mass damper, two mass units having slightly different natural frequencies are coupled by using a damping unit. In this paper, mechanism and vibration control performance of the damping coupled tuned mass damper are described.

Three-Dimensional Wind-Induced Vibration Control Using MTMD Based on Energy Balance Theory

2014 ◽  
Vol 590 ◽  
pp. 116-120 ◽  
Author(s):  
Shan Lang Lu ◽  
Jian Fang Fu ◽  
Jian Lin Zhang
Keyword(s):  
Genetic Algorithm ◽  
Energy Balance ◽  
Vibration Control ◽  
Total Mass ◽  
Three Dimensional ◽  
Tuned Mass Damper ◽  
Balance Theory ◽  
Tuned Mass Dampers ◽  
Mass Damper ◽  
Wind Induced Vibration

In this paper, three-dimensional wind-induced vibration control is investigated by using multiple tuned mass dampers (MTMD). A 20-story steel frame is take as a numerical example to compare the two control effects by using MTMD and TMD (tuned mass damper), in which the same control masses are set on the top floor respectively. The parameters and locations of the damper devices could be chosen optimally based on energy balance theory and genetic algorithm. Numerical results show that the total damp value and the total structural dissipative energy of MTMD is lower than TMD while the total mass are the same. Meanwhile, MTMD also shows a better performance on reducing the along wind displacement and torsion response of the structure than that of TMD.

Multi-Mode Vibration Energy Harvester and Tuned Mass Damper Using Double-Beam Structure

2011 ◽  
Author(s):  
Wanlu Zhou ◽  
Gopinath Reddy Penamalli ◽  
Lei Zuo
Keyword(s):  
Energy Harvesting ◽  
Energy Harvester ◽  
Tuned Mass Damper ◽  
Primary Beam ◽  
Vibration Energy ◽  
Piezoelectric Energy ◽  
Resonance Frequencies ◽  
Mass Damper ◽  
Tip Mass ◽  
Multi Mode

A novel piezoelectric energy harvester with multi-mode dynamic magnifier is proposed and investigated in this paper, which is capable of significantly increasing the bandwidth and the energy harvested from the ambient vibration. The design comprises of an multi-mode intermediate beam with a tip mass, called “dynamic magnifier”, and an “energy harvesting beam with a tip mass. The piezoelectric film is adhered to the harvesting beam to harvest the vibration energy. By properly designing the parameters, such as the length, width and thickness of the two beams and the weight of the two tip masses, we can virtually magnify the motion in all the resonance frequencies of the energy harvesting beam, in a similar way as designing a new beam-type tuned mass damper (TMD) to damp the resonance frequencies of all the modes of the primary beam. Theoretical analysis, finite element simulation, and the experiment study are carried out. The results show that voltage produced by the harvesting beam is amplified for efficient energy harvesting over a broader frequency range, while the peaks of the first three modes of the primary beam can be effectively mitigated simultaneously. The experiment demonstrates 25.5 times more energy harvesting capacity than the conventional cantilever type harvester in broadband frequency 3–300Hz, and over 1000 times more energy close to the first three resonances of harvesting beam.

An Optimization Method of Multiple Tuned Mass Damper Systems and Application to Bridge With Moving Car

2016 ◽  
Author(s):  
Thuan Nguyen ◽  
Nanako Miura ◽  
Akira Sone
Keyword(s):  
Control System ◽  
Optimal Design ◽  
Vibration Control ◽  
Design Theory ◽  
Seismic Loading ◽  
Optimization Method ◽  
Tuned Mass Damper ◽  
Tuned Mass Dampers ◽  
High Rise ◽  
Mass Damper

Tuned mass damper (TMD) device has been a popular vibration control system for moderns as high-rise building, bridge to suppress excessive vibration due to environment or human loading. Moreover, multiple tuned mass dampers have received much attention in the researched. An optimal design theory for bridge implemented with multiple TMD devices is proposed in this paper. The proposed method chooses the objective function with the constraints on the peaks which are at the same heights over frequency ranges of interest. This proposed method successfully reduces vibration of bridge traveled by a car. In a future study, we will extend the optimal design theory for the cases with more than one car and the bridge under seismic loading.

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