To improve interoperability between system level's modeling and simulation, this paper proposes an approach to export models from dedicated magnetic tools into a standardized format, such VHDL-AMS, as powerful modeling language. The goal is to let designers to use a unique modeling approach and single simulation tool to simulate the behavior of a complete electromagnetic system and to make easy the translation of existing models to VHDL-AMS. Thus preserving investment has been provided for them. The paper addresses this methodology as a computer-aided generation of the VHDL-AMS code from macro and micro electromagnetic devices for system simulation. The translation uses Model Driven Engineering (MDE) methods as the transformation of model to another and the code generation from models. Implementation and methodology are illustrated on a dynamic E-shaped actuator such a macro-system case study and a diamagnetic levitation device as micro-system one.
Lab-on-chips (LOCs) are small systems, which integrate, in the same device, several functions involving chemical analysis with bio-processing functionalities typically performed in a laboratory. As a consequence, it is a multi-domain system that can be described and designed with VHDL-AMS, a hardware description language that natively supports electronics, thermics and fluidics. On the other hand, the biological part of the LOC is often modeled and simulated with languages suitable to the field of biology. One of the most commonly used ones is SBML (System Biology Markup Language). To promote the integration of biological parts of the LOCs in the VHDL-AMS environment, we have developed software that automatically generates the VHDL-AMS models from SBML descriptions. The potential of this tool is illustrated in the context of the design of the lab-on-chip suitable for the detection of micro-pollutants in drinking water.
With the increasingly high level of electrical system integration, the modeling of both the system behavior, and the detailed physics of its elements becomes necessary. VHDL-AMS language allows to describe a range of physical systems, such as electromagnetic devices, using a unified design approach to simulate a complete system. In the paper, the behavioral modeling of multiple energy domains is achieved using VHDL-AMS. This illustrated how the interactions between domains take place with an electromagnetic actuator. Then, a multi-level hierarchical modeling methodology, using a V-shaped-based design approach, allows functional modeling, structural behavioral modeling and detailed component modeling.
La formation Master à spécialité micro-nano électronique (MNE) de l'Université de Strasbourg propose, depuis l'année 2015, un enseignement intitulé « Projet de conception » présenté sous la forme d'un module de 4 heures de cours et de 24 heures de travaux pratiques. Les étudiants en seconde année de Master abordent le développement d'applications micro-fluidiques et plus précisément celui de l'électronique de pilotage d'actionneurs et de capteurs associés à un micro-laboratoire gravé sur une puce. Les généralités sur les régimes d'écoulement des fluides et le modèle du circuit fluidique y sont d'abord traitées. Une étude plus poussée conduit ensuite l'étudiant à dimensionner le circuit qui pilote une micro-pompe avec des niveaux de tensions spécifiques à la technologie High-Voltage 0,18 μm. Les notions d'automatique et de systèmes régulés sont indispensables en donnant un lien entre les objectifs et les performances attendues. Enfin, une série de simulations sous Cadence permet de relier les débits d'écoulement des fluides à la microélectronique de commande.
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