Regenerative Shock Absorbers and the Role of the Motion Rectifier

Galluzzi, Renato; Tonoli, Andrea; Amati, Nicola; Curcuruto, Gabriele; Conti, P.; Greco, Giordano; Nepote, Andrea

doi:10.4271/2016-01-1552

Cited by 20 publications

(16 citation statements)

References 9 publications

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“…The represents the nominal value of the parameters, and the parameters change in same (1) The RMS power is proportional to 1 , 2 , and 1 , and the increasing rate ranking is 1 ≫ 2 > 1 ; (2) The 2 and almost have no influences on vibration energy, and the RMS power decreases at first and gradually tends to a constant value as increases; (3) In Figure 6(b), the road grade is according to the ISO standard [21]. The RMS power increases with the road grade increases from A to D, and the increasing rate gets bigger and bigger from A to D. The results are coincident with the results in Galluzzi et al [14].…”

Section: Sensitivity Analysis Of Suspension Vibrationsupporting

confidence: 78%

“…An optimal analysis was developed to improve performance of ride comfort and road holding. Galluzzi et al [14] applied a motion rectifier to improve energy recovery by constraining the motion of the electric motor to a single sense of rotation. This strategy can potentially reduce inertial issues related to zero-speed crossing and motion inversion; thus it could lead to the better conversion efficiency.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design, Modeling, and Analysis of a Novel Hydraulic Energy-Regenerative Shock Absorber for Vehicle Suspension

Zou

Guo

et al. 2017

Shock and Vibration

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To reduce energy consumption or improve energy efficiency, the regenerative devices recently have drawn the public's eyes. In this paper, a novel hydraulic energy-regenerative shock absorber (HERSA) is developed for vehicle suspension to regenerate the vibration energy which is dissipated by conventional viscous dampers into heat waste. At first, the schematic of HERSA is presented and a mathematic model is developed to describe the characteristic of HERSA. Then the parametric sensitivity analysis of the vibration energy is expounded, and the ranking of their influences is 1 ≫ 2 > 1 > 2 ≈ . Besides, a parametric study of HERSA is adopted to research the influences of the key parameters on the characteristic of HERSA. Moreover, an optimization of HERSA is carried out to regenerate more power as far as possible without devitalizing the damping characteristic. To make the optimization results more close to the actual condition, the displacement data of the shock absorber in the road test is selected as the excitation in the optimization. The results show that the RMS of regenerated energy is up to 107.94 W under the actual excitation. Moreover it indicates that the HERSA can improve its performance through the damping control.

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Section: Sensitivity Analysis Of Suspension Vibrationsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Design, Modeling, and Analysis of a Novel Hydraulic Energy-Regenerative Shock Absorber for Vehicle Suspension

Zou

Guo

et al. 2017

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…In 2016, Galluzzi et al [23] studied a type of regenerative shock absorber with hydroelectric transmission, which transfers mechanical power between linear and rotating domains. In this system, the motor is rigidly connected to a hydraulic motor with a fixed displacement, and its inlet is connected to the chamber of the linear hydraulic actuator through two pipelines.…”

Section: Overview On the Research Of Structuresmentioning

confidence: 99%

A Comprehensive Review on Regenerative Shock Absorber Systems

Zheng

Wang

Gao

2019

J. Vib. Eng. Technol.

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Regenerative shock-absorber systems have become more attractive to researchers and industries in the past decade. Vibration occurs between the road surface and car body when driving on irregular road surfaces. The function of regenerative shock absorbers is to recover this vibration energy, which can be dissipated in the form of heat as waste. In this paper, the development of regenerative shock absorber is reviewed. Methods This paper first introduces the existing research and significance of regenerative shock absorbers and reviews the potential of automotive vibration energy-recovery techniques; then, it classifies and summarises the general classifications of regenerative shock absorbers. Finally, this study analyses the modelling and simulation of shock absorbers, actuators and dampers. Results and Conclusions Results show that the great potential of energy recovery from automobile-suspension vibration. And hydraulic and electrical regenerative structures exhibit excellent performance, with great potential for development. Regenerative shock absorbers have become a promising trend for vehicles because of increasingly prominent energy issues.

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“…The drawback of the hydraulic/pneumatic energy harvesting system is that the response time is delayed due to the flow rate and fluid compressibility, also, the rapture may lead to potential failure, resulting in an unreliable system that can cause accidents. To simplify the system, Galluzzi, Tonoli [69] developed a hydraulic regeneration system where check valves are placed inside the hydraulic piston to reduce the mechanical difficulty while amplifying the stroke velocity, as shown in Figure 16. The results show a 12% increase in harvested power over the regenerative shock absorber system without the proposed mechanical motion rectifier.…”

Section: Fluid Motion Rectifiermentioning

confidence: 99%

“…Working principle of the hydraulic regenerative shock absorber system without a mechanical motion rectifier[69].…”

mentioning

confidence: 99%

A Comprehensive Review of the Techniques on Regenerative Shock Absorber Systems

2018

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In this paper, the current technologies of the regenerative shock absorber systems have been categorized and evaluated. Three drive modes of the regenerative shock absorber systems, namely the direct drive mode, the indirect drive mode and hybrid drive mode are reviewed for their readiness to be implemented. The damping performances of the three different modes are listed and compared. Electrical circuit and control algorithms have also been evaluated to maximize the power output and to deliver the premium ride comfort and handling performance. Different types of parameterized road excitations have been applied to vehicle suspension systems to investigate the performance of the regenerative shock absorbers. The potential of incorporating nonlinearity into the regenerative shock absorber design analysis is discussed. The research gaps for the comparison of the different drive modes and the nonlinearity analysis of the regenerative shock absorbers are identified and, the corresponding research questions have been proposed for future work.

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Regenerative Shock Absorbers and the Role of the Motion Rectifier

Cited by 20 publications

References 9 publications

Design, Modeling, and Analysis of a Novel Hydraulic Energy-Regenerative Shock Absorber for Vehicle Suspension

Design, Modeling, and Analysis of a Novel Hydraulic Energy-Regenerative Shock Absorber for Vehicle Suspension

A Comprehensive Review on Regenerative Shock Absorber Systems

A Comprehensive Review of the Techniques on Regenerative Shock Absorber Systems

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