Design of Car Frontal Protection System Using Neural Network and Genetic Algorithm

Majak, Jüri; Pohlak, M.; Eerme, Martin; Velsker, Tarmo

doi:10.5755/j01.mech.18.4.2325

Cited by 25 publications

(7 citation statements)

References 15 publications

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“…The specification of impact barrier was referred in IIHS bumper test protocol which is consisted of barrier, energy absorber and rigid back stop. In this work, the impact simulation was considered as desirable analysis technique because it can describe the real impact test exactly although it could be the time consuming technique compared to the other approach such as the response modeling technique[18][19][20]. The impact simulation has advantages that the analysis results can be directly compared with result of impact test and also the failure load, position and mode were can be predicted and analyzed with the composite failure criterion.…”

mentioning

confidence: 99%

Design optimization and manufacture of hybrid glass/carbon fiber reinforced composite bumper beam for automobile vehicle

Kim

2015

Composite Structures

157

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mentioning

confidence: 99%

Design optimization and manufacture of hybrid glass/carbon fiber reinforced composite bumper beam for automobile vehicle

Kim

2015

Composite Structures

157

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“…For slit-shaped apertures Maa [6] suggests that the rectangular cross section can be modelled as an equivalent ellipse. By introducing an ellipticity factor e = 1 − d w 2 (24) where d and w are the height and the length of the slit, i.e. the depth and the width of the micro-channels in case of MGEs, the reactive impedance is written as…”

Section: External Partmentioning

confidence: 99%

Acoustic performance of micro-grooved elements

Auriemma

2017

Applied Acoustics

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The acoustic performance of a new type of fibre-less sound absorber, the Micro-Grooved Element (MGE), is studied in this paper. The transfer impedance and the absorption coefficient of micro-grooved and Micro-Perforated Elements (MPEs) are measured, modelled and compared.A MGE is a double layer element that involves inlet/outlet slots and facing micro-channels engraved onto the mating surface of the layers. The main advantage of these elements is that, by means of a simple technological process, thin micro-channels with depth of less then 100µm can be easily engraved. This allows the MGEs exhibiting higher absorption coefficients compared to traditional MPEs with 300−700µm diameter of perforations. Moreover, due to the presence of surfaces surrounding the micro-channels, the MGEs show reduced resistance when exposed to high level of sound excitation. In this perspective, the performance of a MGE is more stable than the one of a MPE provided with the same porosity.A number of different MGEs with varied internal geometries has been tested at different excitation levels. The acoustics of the micro-channels is treated in details, the impedance end corrections are determined and the non-linear effects are accounted for. The linear behaviour of MGEs is described by adapting the models for slit-shaped perforated elements (SSEs). The quasi-and non-linear behaviours are expressed as a function of the Shear number and Strouhal number by curve fitting the experimental results.

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“…In [21], the adaptability of the combined fuzzy PID model that adopts a GA was briefly introduced. The GA approach has received increasing attention because of its advantages over conventional optimisation [22][23][24], which make it a powerful technique for self-tuning parameters of hybrid active suspension controllers. In the current study, the GA method is applied to tune the parameters of a combined controller for effective active suspensions during an actual driving cycle (Figure 6).…”

Section: Controller Parameter Self-tuning Based On a Gamentioning

confidence: 99%

Hierarchical Control Strategy for Active Hydropneumatic Suspension Vehicles Based on Genetic Algorithms

Matthews

Zheng

et al. 2014

Advances in Mechanical Engineering

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A new hierarchical control strategy for active hydropneumatic suspension systems is proposed. This strategy considers the dynamic characteristics of the actuator. The top hierarchy controller uses a combined control scheme: a genetic algorithm- (GA-) based self-tuning proportional-integral-derivative controller and a fuzzy logic controller. For practical implementations of the proposed control scheme, a GA-based self-learning process is initiated only when the defined performance index of vehicle dynamics exceeds a certain debounce time threshold. The designed control algorithm is implemented on a virtual prototype and cosimulations are performed with different road disturbance inputs. Cosimulation results show that the active hydropneumatic suspension system designed in this study significantly improves riding comfort characteristics of vehicles. The robustness and adaptability of the proposed controller are also examined when the control system is subjected to extremely rough road conditions.

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Design of Car Frontal Protection System Using Neural Network and Genetic Algorithm

Cited by 25 publications

References 15 publications

Design optimization and manufacture of hybrid glass/carbon fiber reinforced composite bumper beam for automobile vehicle

Design optimization and manufacture of hybrid glass/carbon fiber reinforced composite bumper beam for automobile vehicle

Acoustic performance of micro-grooved elements

Hierarchical Control Strategy for Active Hydropneumatic Suspension Vehicles Based on Genetic Algorithms

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