Parametric Uncertainty and Random Excitation in Energy Harvesting Dynamic Vibration Absorber
01 Mar 2021-ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part B: Mechanical Engineering (American Society of Mechanical Engineers Digital Collection)-Vol. 7, Iss: 1, pp 010905
TL;DR: In this article, an energy harvesting dynamic vibration absorber (EHDVA) is used to suppress undesirable vibrations in a host structure as well as to harvest electrical energy from vibrations using piezo-coated filters.
Abstract: An energy harvesting dynamic vibration absorber (EHDVA) is studied to suppress undesirable vibrations in a host structure as well as to harvest electrical energy from vibrations using piezo...
Citations
More filters
TL;DR: A comprehensive review of the state-of-the-art progress of multistable vibration energy harvesters is provided in this article , where the authors present critical challenges, perspectives for future research directions about MEHs, and governing models and approximate analytic methods are introduced.
69 citations
TL;DR: In this article , the impact of uncertain input parameters on the electrical power generation of galloping-based piezoelectric energy harvester (GPEH) was analyzed by using Newmark beta numerical integration technique.
Abstract: This paper deals with the impact of uncertain input parameters on the electrical power generation of galloping-based piezoelectric energy harvester (GPEH). A distributed parameter model for the system is derived and solved by using Newmark beta numerical integration technique. Nonlinear systems tend to behave in a completely different manner in response to a slight change in input parameters. Due to the complex manufacturing process and various technical defects, randomness in system properties is inevitable. Owing to the presence of randomness within the system parameters, the actual power output differs from the expected one. Therefore, stochastic analysis is performed considering uncertainty in aerodynamic, mechanical, and electrical parameters. A polynomial neural network (PNN) based surrogate model is used to analyze the stochastic power output. A sensitivity analysis is conducted and highly influenced parameters to the electric power output are identified. The accuracy and adaptability of the PNN model are established by comparing the results with Monte Carlo simulation (MCS). Further, the stochastic analyses of power output are performed for various degrees of randomness and wind velocities. The obtained results showed that the influence of the electromechanical coefficient on power output is more compared to other parameters.
3 citations
TL;DR: In this article , a non-traditional vibration absorber is attached to a primary system that is subjected to random base excitation, and the authors investigate the tradeoff issue between vibration suppression and energy harvesting, and find that the existence of the optimum solutions depends on both the mass ratio and the primary damping ratio.
Abstract: This paper investigates the optimization of a non-traditional vibration absorber for simultaneous vibration suppression and energy harvesting. Unlike a traditional vibration absorber, the non-traditional vibration absorber has its damper connected between the absorber mass and the base. An electromagnetic energy harvester is used as a tunable absorber damper. This non-traditional vibration absorber is attached to a primary system that is subjected to random base excitation. An analytical study is conducted by assuming that the base excitation is white noise. In terms of vibration suppression, the objective of the optimization is to minimize the power dissipated by the primary damper and maximize the power dissipated by the absorber damper. It is found that when the primary system is undamped, the power dissipated by the absorber damper remains a constant that is related to the mass ratio. The higher the mass ratio, the higher the power dissipated. When the primary system is damped, the minimization of the power dissipated by the primary damping is equivalent to the maximization of the power dissipated by the absorber damper. The existence of the optimum solutions depends on both the mass ratio and the primary damping ratio. In terms of energy harvesting, the objective of optimization is to maximize the power harvested by the load resistor. It is found that for a given mass ratio and primary damping ratio, the optimum frequency tuning ratio required to maximize vibration suppression is slightly higher than that required to maximize the harvested power. The trade-off issue between vibration suppression and energy harvesting is investigated. An apparatus is developed to allow frequency tuning and damping tuning. Both the numerical simulation and experimental study with band-limited white noise validate the general trends revealed in the analytical study.
1 citations
1 citations
TL;DR: In this article , the performance of a hybrid energy harvester with multiple electromagnetic generators under harmonic and random motions was investigated and a reduced-order model was derived for numerical analysis.
Abstract: This work studies the performance of a hybrid energy harvester with multiple electromagnetic generators under harmonic and random motions. A reduced order model is derived for numerical analysis. Experiments are conducted to validate the numerical results. Results show that the hybrid harvester with two electromagnetic subsystems can generate sufficient magnitude of power sustained over a large frequency region. Parametric studies are carried out and reported. The proposed harvester is capable of producing high voltage and high current simultaneously. Finally, a finite element model is developed for further analysis to find the optimal position and number of electromagnetic subsystems for enhanced power.
1 citations
References
More filters
TL;DR: In this article, an impact-based piezoelectric road energy harvester (15.5 × 15.9 × 9.5 cm3) was developed to convert the input energy efficiently into electrical power.
Abstract: The purpose of this study is designing and examining impact-based piezoelectric road energy harvesters as power sources of a variety of sensors and smart highways. The impact-based piezoelectric road energy harvesters (15 × 15 × 9 cm3) developed in this research can convert the input energy efficiently into electrical power. The output power of the proposed harvester is significantly higher than that of the existing harvesters. Moreover, in previous studies, simple experiments were performed for measuring the output power of a road energy harvester, with no consideration for the practical road conditions. In this study, the output power is measured using machines that can simulate the practical road conditions. First, the output power of the harvester is measured using a universal testing machine (UTM) that can apply an axial load with a controlled loading frequency. Then, a third-scale mobile loading simulator (MMLS3) that can simulate practical traffic load on a lab scale is used. As a result, the maximum output power of the road energy harvester is 483 mW(21.47 W/m2).
46 citations
TL;DR: It is shown that due to the relatively high accuracy exhibited in determining the joint response PDF, the WPI technique is particularly well-suited for constrained optimization problems, where the constraint refers to low probability events (e.g. probabilities of failure).
45 citations
TL;DR: In this article, a mass-spring-damperformer system is proposed for both energy harvesting and vibration attenuation, and the optimum parameters of the device for both of these two cases are discussed.
29 citations
TL;DR: In this article, the effectiveness of using a non-traditional vibration absorber for the purpose of simultaneous vibration suppression and energy harvesting is investigated and compared to the commonly used vibra.
Abstract: This article investigates the effectiveness of using a non-traditional vibration absorber for the purpose of simultaneous vibration suppression and energy harvesting Unlike the commonly used vibra
27 citations
29 Jul 2010
TL;DR: In this article, a semi-active control of a novel configuration of tuned mass damper (TMD) using a modified clipped optimal control strategy was proposed to harvest the vibration energy and control the vibration at the same time.
Abstract: This paper studies the semi-active control of a novel configuration of tuned mass damper (TMD) using a modified clipped optimal control strategy, with the intention to harvest the vibration energy and control the vibration at the same time. One of the authors recently proposed and optimized the so called series TMD, in which multiple auxiliary masses and absorbers are connected to the primary system in series. It has been proven that it is more effective and robust than other types of TMDs with the same mass ratio such as parallel multiple TMDs, multi-degree-of-freedom (DOF) TMDs and three- or four-element TMDs. In this paper, by replacing the viscous damping element between the two auxiliary masses of series TMD system with an electromagnetic transducer, we implement the semi-active series TMD by controlling the current flow through the transducer in a semi-active way, which also means that the electromagnetic motor works in the driven mode and acts as a electricity generator. The proposed control strategy is a combination of LQG and clipped control. LQG control with acceleration feedback is first designed and then a modified clipped control is used to realize it in a semi-active manner with a practical maximum force or damping limitations. Numerical simulations are carried out based on a tall building with semi-active series TMD under random and harmonic excitations, in comparison with the active and passive strategies. The results show that the proposed semi-active series TMD is very effective to control the vibration while harvesting large amount energy from the vibration of buildings.
23 citations