Personal-by-Design: A 3D Electromechanical Model of the Heart Tailored for Personalisation

2021 ◽  
pp. 447-457
Author(s):  
Gaëtan Desrues ◽  
Delphine Feuerstein ◽  
Thierry Legay ◽  
Serge Cazeau ◽  
Maxime Sermesant
Keyword(s):  
Electromechanical Model

scholarly journals MODELLING OF ELECTROMECHANICAL DRIVE SYSTEMS WITH THE USE OF MODAL CONDENSATION

Transport ◽  
2005 ◽  
Vol 20 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Damian Gasiorek ◽  
Arkadiusz Mežyk ◽  
Eugeniusz Switoński
Keyword(s):  
Dynamic Model ◽  
Software Package ◽  
Electromechanical Model ◽  
Electromechanical Drive ◽  
Mechanical Subsystem ◽  
Drive Systems ◽  
Dynamic Phenomena

This paper presents a method of developing a dynamic model enabling the study of the effect of the flexibility of the housing on dynamic phenomena in electromechanical drive systems. The research was performed on the basis of an electromechanical model with feedback between the mechanical subsystem (toothed gear with housing) and the electrical subsystem using a software package developed by the author in MATLAB environment.

scholarly journals Electromechanical Modeling and Simulation of Piezoelectric Vibration based Energy Harvester Interfaced with MPPT based Electrical Circuit using Matlab Simulink

2019 ◽  
Vol 8 (2S11) ◽  
pp. 36-40
Keyword(s):  
Energy Harvester ◽  
High Efficiency ◽  
Electrical Circuit ◽  
Vibration Energy Harvester ◽  
Matlab Simulink ◽  
Electromechanical Model ◽  
Wind Vibration ◽  
Long Time ◽  
Piezoelectric Vibration ◽  
High Output

Wind vibration based energy harvester using piezoelectric material has been of great concern to researchers for a long time for low power generation and applications. In this paper, wind generated vibrations are used to develop electromechanical model of piezoelectric vibration energy harvester to generate electrical output using MATLAB simulink and comparision has been drawn between an electromechanical model of piezoelectric harvester interfaced with P&O MPPT based electrical model and without it. It has been found that overall model with MPPT provides high output with high efficiency

Analytical Electromechanical Model of Cantilevered Bi-Stable Composites for Broadband Energy Harvesting

2013 ◽  
Author(s):  
Andres F. Arrieta ◽  
Tommaso Delpero ◽  
Paolo Ermanni
Keyword(s):  
Energy Harvesting ◽  
Large Amplitude ◽  
Wide Band ◽  
Electrical Energy ◽  
Ambient Vibration ◽  
Mode Shapes ◽  
Rapid Reduction ◽  
Electromechanical Model ◽  
Response Characteristics ◽  
Good Agreement

Vibration based energy harvesting has received extensive attention in the engineering community for the past decade thanks to its potential for autonomous powering small electronic devices. For this purpose, linear electromechanical devices converting mechanical to useful electrical energy have been extensively investigated. Such systems operate optimally when excited close to or at resonance, however, for these lightly damped structures small variations in the ambient vibration frequency results in a rapid reduction of performance. The idea to use nonlinearity to obtain large amplitude response in a wider frequency range, has shown the potential for achieving so called broadband energy harvesting. An interesting type of nonlinear structures exhibiting the desired broadband response characteristics are bi-stable composites. The bi-stable nature of these composites allows for designing several ranges of wide band large amplitude oscillations, from which high power can be harvested. In this paper, an analytical electromechanical model of cantilevered piezoelectric bi-stable composites for broadband harvesting is presented. The model allows to calculate the modal characteristics, such as natural frequencies and mode shapes, providing a tool for the design of bi-stable composites as harvesting devices. The generalised coupling coefficient is used to select the positioning of piezoelectric elements on the composites for maximising the conversion energy. The modal response of a test specimen is obtained and compared to theoretical results showing good agreement, thus validating the model.

scholarly journals Dynamic Responses of Electrically Driven Quartz Tuning Fork and qPlus Sensor: A Comprehensive Electromechanical Model for Quartz Tuning Fork

Sensors ◽  
2019 ◽  
Vol 19 (12) ◽  
pp. 2686
Author(s):  
Manhee Lee ◽  
Bongsu Kim ◽  
Sangmin An ◽  
Wonho Jhe
Keyword(s):  
Resonance Frequency ◽  
Quality Factor ◽  
Tuning Fork ◽  
Quartz Tuning Fork ◽  
Dynamic Responses ◽  
Peak Amplitude ◽  
Quantitative Prediction ◽  
Dynamic Features ◽  
Electromechanical Model ◽  
Different Characteristics

A quartz tuning fork and its qPlus configuration show different characteristics in their dynamic features, including peak amplitude, resonance frequency, and quality factor. Here, we present an electromechanical model that comprehensively describes the dynamic responses of an electrically driven tuning fork and its qPlus configuration. Based on the model, we theoretically derive and experimentally validate how the peak amplitude, resonance frequency, quality factor, and normalized capacitance are changed when transforming a tuning fork to its qPlus configuration. Furthermore, we introduce two experimentally measurable parameters that are intrinsic for a given tuning fork and not changed by the qPlus configuration. The present model and analysis allow quantitative prediction of the dynamic characteristics in tuning fork and qPlus, and thus could be useful to optimize the sensors’ performance.

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