Methodology for comparing the functional performance of energy harvesting shock absorbers

Bowen, L.; Viñolas, Jordi; Olazagoitia, José Luis

doi:10.3233/jae-170057

Cited by 9 publications

(9 citation statements)

References 22 publications

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“…For the mathematical modeling of both systems, the equivalent mechanical model presented in Figure 1 will be used. This consists of deriving from the equations of the dynamics of each system a coefficient of: equivalent mass m eq , also known as inerter [38], an equivalent damping coefficient c eq , and an equivalent stiffness coefficient k eq , as proposed by Bowen et al [15], as in Equation (1).…”

Section: Framework To Analyze the Performance Of The Bs-ehsa And Cd-ehsamentioning

confidence: 99%

“…The recovery of energy from different areas of the vehicle is a topic that has attracted the attention of many researchers in recent years, resulting in a large number of publications. A considerable number of references propose harvesting energy from: the heat given off by the exhaust pipes [1][2][3][4][5], the absorption of the kinetic energy in the brakes [6][7][8][9], the deformation of the tires [10,11], the vibrations of the engine [12,13], the seats [14], and also the suspension system of the vehicle [15].…”

Section: Introductionmentioning

confidence: 99%

“…shows the test bench used for the BS-EHSA prototype (an MTS 835 machine). The tests were run between 0.5-3 Hz using different load electrical resistances(15, 47, 62, 94, and 109 Ω).The acquisition system is composed of a CompactRio NI cDaq-9178 module and a NI-9234 module.…”

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confidence: 99%

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Design and Potential Power Recovery of Two Types of Energy Harvesting Shock Absorbers

2019

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Numerous authors have studied Energy Harvesting Shock Absorbers (EHSA) over the last decade, proposing different designs with diverse geometries, parameters, and components. This article analyzes the energy recovery potential of two types of rotational EHSA, those that use ball-screw and those based on cable transmission. This paper presents the design, manufacturing and mathematical modeling of both options as well as the estimation of the potential power recovery with both technologies. Two types of vehicles are used as references, each one with the characteristic curves of their shock absorbers. Results are presented for different vehicle speeds and road types. Finally, some qualitative characteristics of both EHSAs are detailed to be taken into consideration for their possible use in vehicle suspension.

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Section: Framework To Analyze the Performance Of The Bs-ehsa And Cd-ehsamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design and Potential Power Recovery of Two Types of Energy Harvesting Shock Absorbers

2019

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“…In theoretical roads without any roughness, the energy recovery would be limited to the pitching or turning movement of the vehicle. The amount of energy that is possible to recover is increased in roads with higher roughness as shown in the work performed by Lincoln Bowen and Yuxin Zhang [32,33] where they compare different types of roads (A, B, C, and D) at different speeds and obtain the power. In the same way, mechanical efficiency is reduced by increasing the input frequency as shown by Zhongjie Li [9].…”

Section: Use Of Driving Cycles In the Analysis Of Ehsa Systemsmentioning

confidence: 99%

Methodology for Comprehensive Comparison of Energy Harvesting Shock Absorber Systems

Gijón-Rivera

Olazagoitia

2020

Energies

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In recent years, there has been a lot of work related to Energy Harvesting Shock Absorbers (EHSA). These devices harvest energy from the movement of the vehicle’s shock absorbers caused by road roughness, braking, acceleration and turning. There are different technologies that can be used in these systems, but it is not clear which would be the best option if you want to replace a conventional shock absorber with an EHSA. This article presents a methodology to compare the performance of different EHSA technologies that can replace a shock absorber with a given damping coefficient. The methodology allows to include different analysis options, including different types of driving cycles, computer vehicle models, input signals and road types. The article tests the methodology in selecting the optimal EHSA technology for a particular shock absorber and vehicle, optimizing at the same time energy recovery. In addition, a study of parameters in each type of technology is included to analyze its influence on the final objective. In the example analyzed, the EHSA technology with a rack and pinion system turned out to be the best. The proposed methodology can be extrapolated to other case studies and design objectives.

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“…That is, each author has presented operating and performance results that are difficult to compare with those of other investigations. In this regard, some articles have been published that attempt to provide a review of the EHSAs presented to date [ 14 , 21 ] and, on the other hand, some articles propose different methodologies for evaluating their performance [ 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Can a Semi-Active Energy Harvesting Shock Absorber Mimic a Given Vehicle Passive Suspension?

Reyes-Avendaño

Moreno-Ramírez

Gijón-Rivera

et al. 2021

Sensors

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Energy harvesting shock absorbers (EHSA) have made great progress in recent years, although there are still no commercial solutions for this technology. This paper addresses the question of whether, and under what conditions, an EHSA can completely replace a conventional one. In this way, any conventional suspension could be replicated at will, while recovering part of the wasted energy. This paper focuses on mimicking the original passive damper behavior by continuously varying the electrical parameters of the regenerative damper. For this study, a typical ball-screw EHSA is chosen, and its equivalent suspension parameters are tried to be matched to the initial damper. The methodology proposes several electrical control circuits that optimize the dynamic behavior of the regenerative damper from the continuous variation of a load resistance. The results show that, given a target damper curve, the regenerative damper can adequately replicate it when there is a minimum velocity in the damper. However, when the damper velocity is close to zero, the only way to compensate for inertia is through the introduction of external energy to the system.

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Methodology for comparing the functional performance of energy harvesting shock absorbers

Cited by 9 publications

References 22 publications

Design and Potential Power Recovery of Two Types of Energy Harvesting Shock Absorbers

Design and Potential Power Recovery of Two Types of Energy Harvesting Shock Absorbers

Methodology for Comprehensive Comparison of Energy Harvesting Shock Absorber Systems

Can a Semi-Active Energy Harvesting Shock Absorber Mimic a Given Vehicle Passive Suspension?

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