2021 European Control Conference (ECC), Jun 29, 2021
Water electrolysis to produce hydrogen using Proton Exchange Membrane technology is a well-establ... more Water electrolysis to produce hydrogen using Proton Exchange Membrane technology is a well-established technique. It is a real challenge to perform the diagnosis of such complex systems due to the involvement of multi-physics phenomena. In this paper, a Derivative Causal Bond Graph (DCBG) model-based diagnosis approach has been presented for PEM water electrolysis cell. Analytical Redundancy Relations(ARRs) are the core of the model-based diagnosis which are systematically generated from the DCBG model. The evaluation of these ARRs provides the residuals for monitoring various faults in the system. Linear Fractional Transformation Bond Graph is used to make the diagnostics robust against the uncertainties. Simulations are then performed to demonstrate the functionality of the developed diagnosis.Proton exchange membrane electrolysis, green hydrogen, linear fractional transformation, bond graph, diagnosis, analytical redundancy relations
ABSTRACT We propose a method to organize the list of services of the instruments which compose a ... more ABSTRACT We propose a method to organize the list of services of the instruments which compose a distributed intelligent automated production system. The method rests on a descendant approach. We suppose that the global system is described by the external model we have defined. This model rests on two notions: the notion of services and the notion of user operating modes. From the description of a service at level n+1 which defines its implementation on the basis of the services offered by its resources on level n, we provide the organisation of lower instruments. The method is iterated up to the lowest level of the field devices
An efficient supervision system requires not only a highspeed system, but also high reliability (... more An efficient supervision system requires not only a highspeed system, but also high reliability (i.e. fault tolerant systems), high flexibility (generic design) and high scalability (distributed design). Industrial applications have revealed these absolute needs that distinguish modern architectures from the known ones. Marrying top-level researches from three distinct domains - automation, distributed artificial intelligence (D.A.I.), and distributed computer science -, ERIS Automation has designed a supervision architecture that fits all these criteria. In automation we found a functional description of the smart instruments we wanted to control, in D.A.I. we used the modularity of multi-agents systems, and distributed database technologies gave us a reliable protocol for transactional processing.
A computer based system for physiological signals acquisition and monitoring is described. A mult... more A computer based system for physiological signals acquisition and monitoring is described. A multichannel acquisition network is used to acquire different signals and lead them to a PC-based supervision console. Digitized signals are obtained from smart sensors which are built with a microcontroller including an analog to digital converter and a communication port. Every smart sensor is through a single connection network to the supervision console. A special algorithm has been designed in order to manage the network activity. The system is able to acquire continuously up to 10 analog signals at the same time at a sampling rate of 256 Hz with a 12 bits resolution. Therefore, in multiple situations such as a specific clinical investigation or a particular research protocol, this device would simplify the acquisition procedures and allow special signal analysis.
Les developpements de la microelectronique associes a l'extension des possibilites informatiq... more Les developpements de la microelectronique associes a l'extension des possibilites informatiques conduisent a une revolution du monde des capteurs. Ce memoire propose une contribution a la modelisation generique de capteurs intelligents. Ces modeles presentent d'une part les fonctions internes, d'autre part, d'un point de vue externe, les services et leur organisation. La premiere partie decrit le capteur comme objet finalise dont la fonction primordiale est de delivrer une mesure, puis en le situant dans un contexte de production et enfin en le considerant tout au long de son cycle de vie. Elle contribue ainsi a une presentation du capteur intelligent. Compte tenu des nouveaux services que peut fournir un capteur et des besoins en terme d'interoperabilite, nous avons developpe un modele generique que nous presentons dans une seconde partie. Il comprend: une analyse fonctionnelle qui offre une vue interne du fonctionnement du capteur intelligent en decrivant sur quels traitements repose la realisation d'un service; un modele externe qui decrit l'ensemble des services rendus par le capteur ainsi que leur organisation, (modes d'utilisation, modes de marche). Enfin, la derniere partie du document instancie les modeles obtenus dans le cadre du genie biologique et medical: la surveillance de l'anesthesie.
In this paper, we are concerned with the analysis of system reconfigurability. A system is consid... more In this paper, we are concerned with the analysis of system reconfigurability. A system is considered as a set of interconnected components. Considered from an external viewpoint, each component provides services to users (human operator or other system components). Component level services are composed so as to provide higher level (system level) services. Services are run on receipt of a specific request. A higher level service corresponds to a parallel/sequential composition of lower level ones. Possible request sequences are modelised as words of a vocabulary formed from the vocabulary associated to the lower level requests. Their analysis allows to study the system reconfigurability.
CCAMY systems in partnership with Lille University currently develops Emulatio: a simulation and ... more CCAMY systems in partnership with Lille University currently develops Emulatio: a simulation and diagnosis platform for multi-physic systems, using Hybrid Bond Graph. This platform is devoted to automatically build model of industrial Computer-Aided Design schematics, then generate Block-Diagrams for simulation and export Global Analytical Redundancy Relations for model-diagnosis. For this task, a description language is needed. This paper proposes a new modelling language for Hybrid Dynamic Systems named Hybrid Bond Graph Modelling Language. Hybrid Bond Graph Modelling Language is an extension of BGML, designed to help hybrid Bond graph developers with some new features such as specific tags for hybrid causality algorithm assignment procedure, multi-mode equations and new hybrid elements as controlled junctions. The developped language is illustrated by an application to a two level inverter circuit. Finally perspectives are discussed.
We propose in this paper a graphical interpretation of the structural properties of a system. The... more We propose in this paper a graphical interpretation of the structural properties of a system. The concerned properties are the observability, the controllability and the reconfigurability. The observability allows to identify the part of the system which is monitorable and the controllability allows to drive the system to a wished state. These two properties are required for the realisation of the system objectives. The reconfigurability analysis aims to decide whether the system remains observable and controllable when a part of system components becomes faulty. A graphical approach is used to analyze these properties from a structural point of view. The different notions are illustrated on a two tank process example
This paper continues to present the framework of multi-faults diagnosis from the preceding paper.... more This paper continues to present the framework of multi-faults diagnosis from the preceding paper. There are two main contributions in this part. One is aimed at developing a new diagnostic process for continuous and dynamic system and its corresponding consistency-checking module. This diagnostic process and its consistency-checking module are all based on the models defined by STRIPS (STandford Research Institute Problem Solver) actions. The other is that the fault models are introduced into the consistency-checking module for preventing the impossible diagnoses. Moreover, the STRIPS can qualitatively define the fault models without requiring detail and precise knowledge about faulty components.
Water electrolysis to produce hydrogen using Proton Exchange Membrane technology is a well-establ... more Water electrolysis to produce hydrogen using Proton Exchange Membrane technology is a well-established technique. It is a real challenge to perform the diagnosis of such complex systems due to the involvement of multi-physics phenomena. In this paper, a Derivative Causal Bond Graph (DCBG) model-based diagnosis approach has been presented for PEM water electrolysis cell. Analytical Redundancy Relations(ARRs) are the core of the model-based diagnosis which are systematically generated from the DCBG model. The evaluation of these ARRs provides the residuals for monitoring various faults in the system. Linear Fractional Transformation Bond Graph is used to make the diagnostics robust against the uncertainties. Simulations are then performed to demonstrate the functionality of the developed diagnosis.Proton exchange membrane electrolysis, green hydrogen, linear fractional transformation, bond graph, diagnosis, analytical redundancy relations
2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED), 2017
CCAMY systems in partnership with Lille University currently develops Emulatio: a simulation and ... more CCAMY systems in partnership with Lille University currently develops Emulatio: a simulation and diagnosis platform for multi-physic systems, using Hybrid Bond Graph. This platform is devoted to automatically build model of industrial Computer-Aided Design schematics, then generate Block-Diagrams for simulation and export Global Analytical Redundancy Relations for model-diagnosis. For this task, a description language is needed. This paper proposes a new modelling language for Hybrid Dynamic Systems named Hybrid Bond Graph Modelling Language. Hybrid Bond Graph Modelling Language is an extension of BGML, designed to help hybrid Bond graph developers with some new features such as specific tags for hybrid causality algorithm assignment procedure, multi-mode equations and new hybrid elements as controlled junctions. The developped language is illustrated by an application to a two level inverter circuit. Finally perspectives are discussed.
2021 European Control Conference (ECC), Jun 29, 2021
Water electrolysis to produce hydrogen using Proton Exchange Membrane technology is a well-establ... more Water electrolysis to produce hydrogen using Proton Exchange Membrane technology is a well-established technique. It is a real challenge to perform the diagnosis of such complex systems due to the involvement of multi-physics phenomena. In this paper, a Derivative Causal Bond Graph (DCBG) model-based diagnosis approach has been presented for PEM water electrolysis cell. Analytical Redundancy Relations(ARRs) are the core of the model-based diagnosis which are systematically generated from the DCBG model. The evaluation of these ARRs provides the residuals for monitoring various faults in the system. Linear Fractional Transformation Bond Graph is used to make the diagnostics robust against the uncertainties. Simulations are then performed to demonstrate the functionality of the developed diagnosis.Proton exchange membrane electrolysis, green hydrogen, linear fractional transformation, bond graph, diagnosis, analytical redundancy relations
ABSTRACT We propose a method to organize the list of services of the instruments which compose a ... more ABSTRACT We propose a method to organize the list of services of the instruments which compose a distributed intelligent automated production system. The method rests on a descendant approach. We suppose that the global system is described by the external model we have defined. This model rests on two notions: the notion of services and the notion of user operating modes. From the description of a service at level n+1 which defines its implementation on the basis of the services offered by its resources on level n, we provide the organisation of lower instruments. The method is iterated up to the lowest level of the field devices
An efficient supervision system requires not only a highspeed system, but also high reliability (... more An efficient supervision system requires not only a highspeed system, but also high reliability (i.e. fault tolerant systems), high flexibility (generic design) and high scalability (distributed design). Industrial applications have revealed these absolute needs that distinguish modern architectures from the known ones. Marrying top-level researches from three distinct domains - automation, distributed artificial intelligence (D.A.I.), and distributed computer science -, ERIS Automation has designed a supervision architecture that fits all these criteria. In automation we found a functional description of the smart instruments we wanted to control, in D.A.I. we used the modularity of multi-agents systems, and distributed database technologies gave us a reliable protocol for transactional processing.
A computer based system for physiological signals acquisition and monitoring is described. A mult... more A computer based system for physiological signals acquisition and monitoring is described. A multichannel acquisition network is used to acquire different signals and lead them to a PC-based supervision console. Digitized signals are obtained from smart sensors which are built with a microcontroller including an analog to digital converter and a communication port. Every smart sensor is through a single connection network to the supervision console. A special algorithm has been designed in order to manage the network activity. The system is able to acquire continuously up to 10 analog signals at the same time at a sampling rate of 256 Hz with a 12 bits resolution. Therefore, in multiple situations such as a specific clinical investigation or a particular research protocol, this device would simplify the acquisition procedures and allow special signal analysis.
Les developpements de la microelectronique associes a l'extension des possibilites informatiq... more Les developpements de la microelectronique associes a l'extension des possibilites informatiques conduisent a une revolution du monde des capteurs. Ce memoire propose une contribution a la modelisation generique de capteurs intelligents. Ces modeles presentent d'une part les fonctions internes, d'autre part, d'un point de vue externe, les services et leur organisation. La premiere partie decrit le capteur comme objet finalise dont la fonction primordiale est de delivrer une mesure, puis en le situant dans un contexte de production et enfin en le considerant tout au long de son cycle de vie. Elle contribue ainsi a une presentation du capteur intelligent. Compte tenu des nouveaux services que peut fournir un capteur et des besoins en terme d'interoperabilite, nous avons developpe un modele generique que nous presentons dans une seconde partie. Il comprend: une analyse fonctionnelle qui offre une vue interne du fonctionnement du capteur intelligent en decrivant sur quels traitements repose la realisation d'un service; un modele externe qui decrit l'ensemble des services rendus par le capteur ainsi que leur organisation, (modes d'utilisation, modes de marche). Enfin, la derniere partie du document instancie les modeles obtenus dans le cadre du genie biologique et medical: la surveillance de l'anesthesie.
In this paper, we are concerned with the analysis of system reconfigurability. A system is consid... more In this paper, we are concerned with the analysis of system reconfigurability. A system is considered as a set of interconnected components. Considered from an external viewpoint, each component provides services to users (human operator or other system components). Component level services are composed so as to provide higher level (system level) services. Services are run on receipt of a specific request. A higher level service corresponds to a parallel/sequential composition of lower level ones. Possible request sequences are modelised as words of a vocabulary formed from the vocabulary associated to the lower level requests. Their analysis allows to study the system reconfigurability.
CCAMY systems in partnership with Lille University currently develops Emulatio: a simulation and ... more CCAMY systems in partnership with Lille University currently develops Emulatio: a simulation and diagnosis platform for multi-physic systems, using Hybrid Bond Graph. This platform is devoted to automatically build model of industrial Computer-Aided Design schematics, then generate Block-Diagrams for simulation and export Global Analytical Redundancy Relations for model-diagnosis. For this task, a description language is needed. This paper proposes a new modelling language for Hybrid Dynamic Systems named Hybrid Bond Graph Modelling Language. Hybrid Bond Graph Modelling Language is an extension of BGML, designed to help hybrid Bond graph developers with some new features such as specific tags for hybrid causality algorithm assignment procedure, multi-mode equations and new hybrid elements as controlled junctions. The developped language is illustrated by an application to a two level inverter circuit. Finally perspectives are discussed.
We propose in this paper a graphical interpretation of the structural properties of a system. The... more We propose in this paper a graphical interpretation of the structural properties of a system. The concerned properties are the observability, the controllability and the reconfigurability. The observability allows to identify the part of the system which is monitorable and the controllability allows to drive the system to a wished state. These two properties are required for the realisation of the system objectives. The reconfigurability analysis aims to decide whether the system remains observable and controllable when a part of system components becomes faulty. A graphical approach is used to analyze these properties from a structural point of view. The different notions are illustrated on a two tank process example
This paper continues to present the framework of multi-faults diagnosis from the preceding paper.... more This paper continues to present the framework of multi-faults diagnosis from the preceding paper. There are two main contributions in this part. One is aimed at developing a new diagnostic process for continuous and dynamic system and its corresponding consistency-checking module. This diagnostic process and its consistency-checking module are all based on the models defined by STRIPS (STandford Research Institute Problem Solver) actions. The other is that the fault models are introduced into the consistency-checking module for preventing the impossible diagnoses. Moreover, the STRIPS can qualitatively define the fault models without requiring detail and precise knowledge about faulty components.
Water electrolysis to produce hydrogen using Proton Exchange Membrane technology is a well-establ... more Water electrolysis to produce hydrogen using Proton Exchange Membrane technology is a well-established technique. It is a real challenge to perform the diagnosis of such complex systems due to the involvement of multi-physics phenomena. In this paper, a Derivative Causal Bond Graph (DCBG) model-based diagnosis approach has been presented for PEM water electrolysis cell. Analytical Redundancy Relations(ARRs) are the core of the model-based diagnosis which are systematically generated from the DCBG model. The evaluation of these ARRs provides the residuals for monitoring various faults in the system. Linear Fractional Transformation Bond Graph is used to make the diagnostics robust against the uncertainties. Simulations are then performed to demonstrate the functionality of the developed diagnosis.Proton exchange membrane electrolysis, green hydrogen, linear fractional transformation, bond graph, diagnosis, analytical redundancy relations
2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED), 2017
CCAMY systems in partnership with Lille University currently develops Emulatio: a simulation and ... more CCAMY systems in partnership with Lille University currently develops Emulatio: a simulation and diagnosis platform for multi-physic systems, using Hybrid Bond Graph. This platform is devoted to automatically build model of industrial Computer-Aided Design schematics, then generate Block-Diagrams for simulation and export Global Analytical Redundancy Relations for model-diagnosis. For this task, a description language is needed. This paper proposes a new modelling language for Hybrid Dynamic Systems named Hybrid Bond Graph Modelling Language. Hybrid Bond Graph Modelling Language is an extension of BGML, designed to help hybrid Bond graph developers with some new features such as specific tags for hybrid causality algorithm assignment procedure, multi-mode equations and new hybrid elements as controlled junctions. The developped language is illustrated by an application to a two level inverter circuit. Finally perspectives are discussed.
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Papers by Anne-lise Gehin