Publications by Alain Vachoux | EPFL Graph Search

Electro-thermal virtual prototyping of a Rogowski Coil sensor system

Alain Vachoux, Juan Sebastian Rodriguez Estupinan

An electro-thermal model of a Rogowski Coil sensor system is here described. A co-design methodology between VHDL-AMS and Finite Element Analysis (FEA) has been used for modeling the entire system. The proposed modeling strategy uses geometrical FEA to com ...

IEEE2015

VHDL-AMS Virtual Prototyping of a Generator Circuit Breaker Ablation Monitoring System

Alain Vachoux, Yannick Maret, Juan Sebastian Rodriguez Estupinan, Qianqian Ha

Generator Circuit Breakers (GCBs) are commonly used in electrical power generation systems to protect key equipment such as transformers and generators from damage due to overload or short-circuit. However the interruption and feeding of high currents lead ...

IEEE Conference Press2015

Electro-thermal modeling of a Rogowski coil sensor system

Alain Vachoux, Juan Sebastian Rodriguez Estupinan

This paper focuses on the electro-thermal modeling of an electrical current sensor, based on the Rogowski Coil transducer. We exploit the multi-domain capabilities of VHDL-AMS together with geometrical Finite Element Analysis (FEA) to create a time-depende ...

2015

VHDL-AMS Model of an Electrochemical Cell to Design VLSI Bio-Chips

Alain Vachoux, Yusuf Leblebici, Giovanni De Micheli, Sandro Carrara, Marialaura Beltrandi

This paper presents a new VHDL-AMS behavioral model of an electrochemical cell suitable for the design of VLSI bio-chips. Existing models are mainly equivalent circuit macromodels using electrical primitives, which hardly fit the actual behavior of biosens ...

2011

Supporting Dimensional Analysis in SystemC-AMS

Alain Vachoux, Torsten Mähne

This paper will introduce new modeling capabilities for SystemC-AMS to describe energy conserving multi-domain systems in a formal and consistent way at a high level of abstraction. To this end, all variables and parameters of the system model need to be a ...

IEEE2009

A VHDL-AMS Modeling Methodology for Top-Down/Bottom-Up Design of RF Systems

Alain Vachoux, Torsten Mähne, Matteo Contaldo

This paper presents a modelling methodology for the top-down/bottom-up design of RF systems based on systematic use of VHDL-AMS models. The model interfaces are parameterizable and pin-accurate. The designer can choose to parameterize the models using perf ...

ECSI2009

SystemC-Based Modeling of Embedded Heterogeneous Systems

Alain Vachoux, Torsten Mähne

SystemC is emerging as a de-facto standard for digital system design. Since embedded systems include more and more heterogeneous components (e.g., analog/RF front-ends, processor cores, embedded software, digital hardware, sensors, actuators), the need for ...

2008

Development of a Bond Graph Based Model of Computation for SystemC-AMS

Alain Vachoux, Yusuf Leblebici, Torsten Mähne

The modelling and simulation capabilities of SystemC-AMS concerning conservative continuous time systems involving the interaction of several physical domains and with digital control components are currently limited. Bond graphs unify the description of m ...

2008

Proposal for a Bond Graph Based Model of Computation in SystemC-AMS

Alain Vachoux, Torsten Mähne

SystemC-AMS currently offers modelling formalisms with specialised solvers mainly focussing on the electrical domain. There is a need to improve its modelling capabilities concerning conservative continuous time systems involving the interaction of several ...

ECSI2007

Fostering the Reuse and Collaborative Development of Models in the AMS SoC Design Process

Alain Vachoux, Yusuf Leblebici, Torsten Mähne

Systems-on-Chips (SoCs) integrate more and more heterogeneous components: analog/RF/digital circuits, sensors, actuators, software. For the design of these systems very different description formalisms, or Models of Computation (MoCs), and tools are used f ...

IEEE2007

ModelLib: A Web-Based Platform for Collecting Behavioural Models and Supporting the Design of AMS Systems

Alain Vachoux, Torsten Mähne

This paper describes ModelLib, a web-based platform for collecting models from different domains (e.g. electrical, mechanical) and levels of abstractions. Use cases for this tool are presented, which show how it can support the design~process of complex AM ...

ECSI2006

Embedded Mixed-Signal Systems: New Challenges for Modeling and Simulation

Alain Vachoux

In this paper we give an overview of new requirements to the modeling and simulation of analog and mixed-signal systems. We give brief examples from two application domains and reveal limitations of established means for modeling and simulation. New challe ...

2006

Extending SystemC to Support Mixed Discrete-Continuous System Modeling and Simulation

Alain Vachoux

Systems on chip are more and more heterogeneous and include software, analog/RF and digital hardware, and non-electronic components such as sensors or actuators. The design and the verification of such systems require appropriate modeling means to deal wit ...

2005

VHDL-AMS and Verilog-AMS as alternative hardware description languages for efficient modeling of multidiscipline systems

Alain Vachoux

This paper focuses on commonalities and differences between the two mixed-signal hardware description languages VHDL-AMS and Verilog-AMS in the case of modeling heterogeneous or multi-discipline systems. The paper has two objectives. The first one consists ...

2005

Modeling and Simulation of Multi-Discipline Systems using Bond Graphs and VHDL-AMS

Alain Vachoux, Christophe Lallement

Bond graphs represent a convenient tool for physical system analysis. While it is one part of the job to establish a pertinent bond graph model, it is another important part of the job to take advantage of this bond graph. A simulation tool is involved and ...

2005

Analyse temporelle de grands circuits intégrés MOS par relaxation de forme d'onde

Alain Vachoux

EPFL1988