An experimental study on self-powered vibration control and monitoring system using electromagnetic TMD and wireless sensors

Abstract

This paper proposed and validated a self-powered vibration control and monitoring (SVCM) system which consists of a pendulum-type tuned mass damper (TMD), a rotary electromagnetic (EM) device, an energy harvesting circuit (EHC) and a wireless smart sensor (WSS). As the key element in the system, the regenerative electromagnetic TMD (EMTMD) is able to convert vibration energy of structures to electrical energy, and thus plays dual functions, namely, vibration mitigation and energy harvesting. With the aid of EHC, the electrical energy can be further stored and used to power WSS that closely monitor structural vibration responses. The feasibility of the proposed SVCM system was validated via shaking table tests, in which a single-degree-of-freedom (SDOF) structural model equipped with the SVCM system was tested under random excitations. The functionality of the SVCM system was discussed with regard to the vibration control, energy harvesting and vibration monitoring performance. The experimental results revealed that the proposed regenerative EMTMD device can provide regenerative and economical power to WSS. The harvested power reaches about 312.4 mW under random ground motions with root-mean-square (RMS) acceleration equal to 0.05g. Meanwhile, the comparison shows that the peak magnitude of the frequency response function of structural displacement is reduced by 10 dB with the aid of the EMTMD. This study demonstrates that the SVCM system provides a novel and promising solution to the power supply problem associated with wireless sensing technology, and will stimulate the integration of vibration control and monitoring system.

Feasibility of Output-Only Modal Identification Using Wireless Sensor Network: A Quantitative Field Experimental Study

“…From our experience, in addition to extremely lowamplitude ambient vibration test, another two challenges facing WSN in ambient vibration tests are the bandwidth limitation of wireless communication and the power supply for wireless sensors. Low power wireless sensors and energy harvesting technologies [42,43] should be developed for next generation wireless sensing systems. Wireless sensors, with the characteristics of low cost, mobile, easy installation, and increasingly more powerful embedded computation capability, are expected to keep evolving and to enable exciting future applications on civil infrastructure.…”

Self-Powered Dynamic Systems in the Framework of Optimal Uncertainty Quantification

“…This can be written as (where the net power is P g À P T ) P½P T ðXÞ ! P g (28) Assume that the probability function is a member of admissible extremal scenarios A (or ðP c ; PÞ 2 A), where A is defined as A :¼ ðp c ; lÞ Here, n denotes the number of inputs, for inputs X i , i ¼ 1; …; n, E l ½p T is the bounded mean output power, l i is the probability measure of the input parameter X i (l i 2 PðX i Þ), and p c is a possible output function of P c for the corresponding inputs/parameters X i . The original problem entails optimizing over a collection of ðp c ; lÞ that could be ðP c ; PÞ.…”

“…It can be used for controlling vehicle vibration (e.g., see Ref. [27]) 1 or structural vibration in the form of a seismic monitoring and protection system [28]. Solar-powered vehicles, as self-powered dynamic systems, exploit renewable energy as a power source in a self-sustained scheme.…”

Wind Induced Vibration Control and Energy Harvesting of Electromagnetic Resonant Shunt Tuned Mass-Damper-Inerter for Building Structures

“…For the TMD with damped primary systems, substantive design methods and tuning criteria have been raised [9], and the TMD applied in nonlinear and distributed primary systems has been studied [10,11]. Meanwhile, energy harvesting from large-amplitude lowfrequency oscillating primary structures has emerged as a promising research area [12,13], especially from TMD [14][15][16][17][18][19]. It depends on replacing the energy-dissipating element of the TMD or supplementing with electromagnetic harvester, for relatively large-scale applications [14][15][16][17][18], or piezoelectric materials, even for relatively small-scale applications [17,19].…”

“…Meanwhile, energy harvesting from large-amplitude lowfrequency oscillating primary structures has emerged as a promising research area [12,13], especially from TMD [14][15][16][17][18][19]. It depends on replacing the energy-dissipating element of the TMD or supplementing with electromagnetic harvester, for relatively large-scale applications [14][15][16][17][18], or piezoelectric materials, even for relatively small-scale applications [17,19]. Under this background, a concept of tuned massdamper/harvester (TMD/H) is presented in [20], in which the basic conversion consists of a linear voice coil motor connected to a resistance emulator consisting of rectification and variable impedance unit.…”