Learning the propagation properties of rectangular metal plates for Lamb wave-based mapping

Ouabi, Othmane-Latif; Pomarède, Pascal; Declercq, Nico F.; Zeghidour, Neil; Geist, Matthieu; Pradalier, Cédric

doi:10.1016/j.ultras.2022.106705

Cited by 5 publications

(1 citation statement)

References 42 publications

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“…In the previous studies, the research on VAW is limited to the ideal environment, and the research on the propagation of vortex waves under the OT effect is focussed on the light wave [33][34][35][36][37][38][39]. The propagation characteristics of VAW considering the OT effect and the application of VAW in sonar staring imaging need to be further studied.…”

Section: Introductionmentioning

confidence: 99%

Propagation and imaging analysis of vortex acoustic waves in ocean turbulence

Shi

Liu

Guo

2022

IET Radar Sonar & Navi

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Vortex acoustic waves (VAW) with helical phase wavefronts could provide a new dimension for the detection and imaging of targets in the ocean. To explore the propagation characteristics of VAW under the effect of ocean turbulence (OT) and the impact on imaging, the phase screen method is used to simulate the propagation of VAW generated by a phase-modulated uniform circular array under the effect of OT and the imaging of the target. The phase change and detection probability under the influence of the acoustic wave parameters and OT parameters during the propagation process are studied. Second, the azimuth resolution performance and focussing performance of the target imaging are studied. Under the effect of OT, the VAW of different frequencies and topological modes become scattered, and the degree of scattering is different when the parameters are different; and the resolution performance and focussing performance have also deteriorated. However, the VAW still has a reliable resolution under the effect of medium and low-intensity OT, which provides theoretical support for the practice of the VAW in underwater target imaging.

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Section: Introductionmentioning

confidence: 99%

Propagation and imaging analysis of vortex acoustic waves in ocean turbulence

Shi

Liu

Guo

2022

IET Radar Sonar & Navi

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Front glass crack inspection of thin-film solar photovoltaic modules using high-order ultrasonic Lamb waves

Silitonga,

Declercq,

Meraghni

et al. 2024

Solar Energy

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Lyapunov-based neural network model predictive control using metaheuristic optimization approach

Stiti,

Benrabah,

Aouaichia

et al. 2024

Sci Rep

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This research introduces a new technique to control constrained nonlinear systems, named Lyapunov-based neural network model predictive control using a metaheuristic optimization approach. This controller utilizes a feedforward neural network model as a prediction model and employs the driving training based optimization algorithm to resolve the related constrained optimization problem. The proposed controller relies on the simplicity and accuracy of the feedforward neural network model and the convergence speed of the driving training based optimization algorithm. The closed-loop stability of the developed controller is ensured by including the Lyapunov function as a constraint in the cost function. The efficiency of the suggested controller is illustrated by controlling the angular speed of three-phase squirrel cage induction motor. The reached results are contrasted to those of other methods, specifically the fuzzy logic controller optimized by teaching learning-based optimization algorithm, the optimized PID with particle swarm optimization algorithm, the neural network model predictive controller based on particle swarm optimization algorithm, and the neural network model predictive controller using driving training based optimization algorithm. This comparative study showcase that the suggested controller provides good accuracy, quickness and robustness due to the obtained values of the mean absolute error, mean square error root mean square error, enhancement percentage, and computing time in the different simulation cases, and it can be efficiently utilized to control constrained nonlinear systems with fast dynamics.

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Learning the propagation properties of rectangular metal plates for Lamb wave-based mapping

Cited by 5 publications

References 42 publications

Propagation and imaging analysis of vortex acoustic waves in ocean turbulence

Propagation and imaging analysis of vortex acoustic waves in ocean turbulence

Front glass crack inspection of thin-film solar photovoltaic modules using high-order ultrasonic Lamb waves

Lyapunov-based neural network model predictive control using metaheuristic optimization approach

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