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Pierre-Alain Yvars

Pierre-Alain Yvars
ISAE-Supméca · QUARTZ Lab EA7393

Professor

About

71
Publications
7,443
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461
Citations

Publications

Publications (71)
Article
We present in this paper the Model Based System Synthesis (MBSS) approach for the design of complex systems that are correct by construction. Where the usual Model Based System Engineering (MBSE) approach offers formalisms and tools to represent a candidate system, to analyze it, to simulate it and even to optimize it, MBSS proposes to represent th...
Article
This article presents a complete and general approach for the preliminary design of systems in the framework of systems engineering by relying mainly on synthesis. It is completed by a validation step through analysis to reduce furthermore the space of admissible solutions. This approach focuses on the modeling of design problems in electrical engi...
Article
This paper presents an integrated approach for the preliminary design of complex systems and for the generation of correct by construction system architectures with respect to the requirements to be satisfied. These requirements can be functional and/or non-functional (safety, sustainability ...). The approach presented is complementary to the usua...
Article
This paper presents an approach for the preliminary design of complex physical systems in the framework of systems engineering. This approach is centered on the activities and actors involved in the pre-design tasks. It focuses on the modeling of design problems with DEPS (DEsign Problem Specification), a recent formalism for specifying and modelin...
Conference Paper
Most of the work in the field of Model-Based System Engineering for the design of technical systems consists of implementing solution-oriented approaches. Several system modeling languages are available to represent fully defined systems from several points of view. It is also possible to link these descriptions with simulation or analysis tools to...
Conference Paper
Full-text available
Nous présentons DEPS Studio, un environnement intégré de modélisation et de résolution conçu pour poser et résoudre des problèmes de synthèse de système. Cet environnement permet d'éditer, de compiler, de déboguer et de résoudre des problèmes exprimés dans le langage de modélisation DEPS. DEPS (Design Problem Specification) traite des problèmes de...
Conference Paper
In aeronautics, compliance with safety requirements is the main driver in the definition of system architectures. In the future, system architects will have to use tools to assist in the generation of correct architectures by construction. In this context, we are interested in formal requirements modeling and in the computer resolution of these for...
Conference Paper
Most of the work in the field of Model-Based System Engineering for the design of technical systems consists of implementing solution-oriented approaches. Several system modeling languages are available to represent fully defined systems from several points of view. It is also possible to link these descriptions with simulation or analysis tools to...
Conference Paper
Embedded computing platforms must support the execution of an increasing number of system functions and must scrupulously respect multiple functional and non-functional constraints. Their architecture is more and more complex and consequently the preliminary definition of eligible architectures based on the competence and experience of a small numb...
Conference Paper
Nous présentons DEPS Studio un environnement intégré de modélisation et de résolution conçu pour spécifier et résoudre des problèmes de conception de systèmes. Cet environnement permet de décrire, mettre au point et résoudre des problèmes modélisés avec le langage DEPS. Celui-ci combine des traits de représentation des connaissances par objets et d...
Article
Full-text available
We test the relevance of a model-based approach for sizing and optimizing complex systems. Classically a model-based approach is characterized by a clear partition between the problem description and the solving process. In the case of a design problem, we show that the sizing task could be systematically characterized and therefore could lead to a...
Conference Paper
This paper deals with design problems of a complex technical system. Thus, a new design approach is proposed, which the consideration of static and dynamic requirements is done simultaneously and globally in the preliminary design phase. The proposed design approach is applied on the sizing case of an active MacPherson suspension system. Indeed, in...
Conference Paper
Les plateformes informatiques embarquées doivent supporter l’exécution d’un nombre croissant de fonctions systèmes et respecter scrupuleusement de multiples contraintes fonctionnelles et non fonctionnelles. Leur architecture est donc de plus en plus complexe et par conséquent la définition préliminaire d’architectures admissibles basées sur la comp...
Conference Paper
Full-text available
Ce papier s’intéresse à la conception optimale des dispositifs électriques, électroniques ou électromagnétiques interconnectés, devant respecter les spécifications hétérogènes d’un cahier des charges complexes. Nous montrerons que dans les phases de conception préliminaire, les propositions de solutions à la fois innovantes, pertinentes et respecta...
Article
The tendency towards a homogenous mode of development modelled on that of Western countries means that sustainable development has become increasingly urgent. It is necessary to thoroughly redefine products and their expected performances in such a way that the consequences are compatible with sustainable development. In the domain of product desig...
Conference Paper
Full-text available
Nous présentons DEPS (Design Problem Specification) un nouveau langage de modélisation conçu pour poser et résoudre des problèmes de conception de systèmes. Ce langage combine des traits de modélisation structurelle propres aux langages orientés objet avec des traits de spécification de problème propres aux langages de programmation mathématique. I...
Conference Paper
Full-text available
This paper is concerned with the optimization of an active vibration micro-isolator. The process is applied to the whole system including the passive structure, the piezoelectric transducers, the electrical interfaces and the controller. An efficient optimization algorithm based on an interval computation method is used. The authors’ general object...
Conference Paper
Full-text available
This article aims to present an approach based on a combination of life cycle analysis methods (LCA) and problem solving by constraint satisfaction (CSP). This original approach makes it possible to vary the design of the different dimensions of the functional units of a complex system and thus to make it easier to identify the best architecture al...
Article
A new design approach based on methods by intervals adapted to the integration of the simulation step at the earliest stage of preliminary design for dynamic systems is proposed in this study. The main idea consists on using the interval computation method to make a simulation by intervals in order to minimize the number of simulations which allow...
Article
This paper focuses on the impact of Design Change Orders (DCO) on the product data into a PLM platform. In a context of concurrent engineering, we concentrate on the management of product data associated to the product structure. As PLM platform architecture is not fully adapted to conduct DCO on the product data, we propose a specific approach for...
Article
In new complex product development processes, the design problem is usually distributed to multiple actors from different disciplines. Each design actor has a limited responsibility in the design system. Therefore, each design actor has limited control over design variables and performance variables. However, design actors are not isolated since th...
Article
The resolution of complex design problems requires a distributed design system that considers the involvement of various designers. Inconsistencies of design objectives and working procedures of distributed subsystems can cause design conflicts due to couplings among their sub-problems. Another issue is the management of imprecision in design syste...
Article
Computation techniques have provided designers with deeper understanding of the market niches that were neglected before. Usage contextual information has been studied in marketing research since the last century; however, little research in design engineering focuses on it. Therefore, in this paper, we analyzed the relations between usage context...
Conference Paper
In distributed design systems, designers are related to each other through couplings, however they have limited control over the design variables. Any inconsistency in the design system can result in design conflicts through these couplings. Modeling designer attitudes can help to understand inconsistencies and manage conflicts in design processes....
Article
While the marketing literature has advocated for decades that new products should be designed for intended and anticipated consumer usages, the engineering literature mostly proposes optimization of product performances independent of specific users’ skills, anticipated usage scenarios, and competing products on the market. In contrast to tedious m...
Article
In this study, a new design approach based on an interval computation method and the constraint satisfaction problem technique (CSP approach) was discussed. It has been applied in the design of a compression spring, implemented in the vehicle suspension system. A design process is proposed and compared with what is done in conventional design. IT a...
Article
When the steady states are largely predominant with respect to transitional phases, steady-state simulation seems sufficient to predict the behavior of a complex system. Over the past 20 years, different modeling languages and dedicated tools have been developed to improve steady state simulation.In this paper, focus is made on steady-state simulat...
Article
In distributed design systems, while designers are connected to each other through dimensioning couplings, they have limited control over design and performance variables. Any inconsistency among design objectives and working procedures of heterogeneous designers interacting in the design system can result in design conflicts due to these couplings...
Chapter
In this present study a new design approach based on intervals calculation method and Constraint Satisfaction Problem technique «CSP approach» was discussed. It has been applied in the design of a compression spring implemented in vehicle suspension system. Compared to what is done in conventionally design, the design process proposed avoid to go t...
Article
Full-text available
This article is concerned with the optimization of the mechanical structure of a one-degree-of-freedom vibration isolator. An efficient optimization algorithm based on an interval-computation method is used. The authors’ general objective is to include and develop an optimization step in the pre-design process of a smart structure. In this article,...
Conference Paper
In this paper, a new design approach based on methods by intervals adapted to the integration of a simulation step at the earliest stage of preliminary design for dynamic systems is proposed. The general idea consists in using the interval computation method to make a simulation by intervals in order to minimize the number of simulations. These int...
Article
The European directive ELV (End of Life of Vehicle) 2000/53/EC means that today's car manufacturers must make sure that vehicles put on the market in 2006 (and in 2015 respectively) respect the reuse and recovery objectives of 85% in mass (95% respectively) and more particularly a recycling objective of 80% (85% respectively). These objectives (JOC...
Article
Timed Petri Nets are a good modeling framework to express the behavior of discrete event systems, such as transport or manufacturing systems. They allow to represent easily the distribution of tasks within a complex system, with the capacity to handle time constraints on the duration of these tasks. However, when synchronization is needed between s...
Conference Paper
In the New Product Development processes, there are usually multiple players interacting through coupled design activities with conflicting design objectives. We use Set-based design approach and Constraint Satisfaction Problem solving techniques to deal with the multiplayer, multi-objective design problem. In order to observe the states of the pla...
Article
Full-text available
In this paper, we propose to use a constraint programming approach to address the reachability problem in Timed Petri Nets (TPNs). TPNs can be used to model a wide class of systems, from manufacturing issues to formal verification of embedded systems. Many of the considered problems can be modeled as reachability problems in TPNs. To reduce the spa...
Article
Full-text available
Cet article vise à répondre à l'inexistence d'outils d'écoconception pour les phases amont de la conception de produits, particulièrement dans le domaine des systèmes complexes. Un système complexe possède de nombreux sous-systèmes interdépendants, plusieurs alternatives de conception pour chaque sous-système, des conditions d'utilisation variables...
Article
This article aims to respond to the absence of ecodesign tools for products in the early stages of the design process especially in the domain of complex systems. A complex system has numerous interdependent sub-systems, each of these having several design alternatives and variable conditions of use which affect the choice of technological solution...
Article
This paper deals with the possibility of using constraint propagation in function and value analyses. It proposes a method to automatically generate a constraint satisfaction problem (CSP) from the functional structure (function or component hierarchy) of a product. The proposed method, by itself, has the advantage of assisting designers in selecti...
Conference Paper
In the New Product Development processes, there are usually interacting multiple actors with multiple design objectives. Design objectives of the actors can be contradictorily related and design modifications related to some objectives may generate negative impacts on the other actors. Therefore conflicts may occur. We present a multi-actor design...
Article
In this paper we are studying a deterministic constraint based approach to solve Pareto bi-criterion optimization problems in design. After presenting the use of multi-objective optimization methods in design, the CSP method and the several ways to solve it is introduced. A quick overview of CSP application in product engineering is given too. More...
Article
After demonstrating the feasibility of the inversion of a ship emission model with the CSP approach [1], we will now discuss about the optimization of emissions. In a first time, a single-objective approach with an aggregation function of the emissions will be used, then, it will be a multi-objective approach and the Pareto frontier will be compute...
Article
The choice of solution, which a systems architect is confronted with within the framework of a product structure definition, can very quickly prove to be a thorny problem owing to the possible combinatorial system. In this paper we will offer an alternative resting on the utilization of constraint-based programming techniques for representing and m...
Article
Full-text available
The purpose of this study is to highlight the interest of using the constraint propagation on intervals method for an exhaust emissions model. The emission model used for our researches is resulting from the MOPSEA project (MOnitoring Program on Air Pollution From SEA-going vessels). A usual approach stemming from the literature and presented in th...
Article
In this paper we are considering that the product modelling step of a new product design process can be represented as a CSP (Constraint Satisfaction Problem). CSP modelling and resolution has proved its efficiency within the framework of single-designer design. We propose to extend the functions of CSP to the context of multi-designers. We have re...
Conference Paper
In the context of the Usage Context Based Design (UCBD) of a product-service, a taxonomy of variables is suggested to setup the link between the design parameters of a product-service and the part of a set of expected usages that may be covered. This paper implements a physics-based model to provide a performance prediction for each usage context t...
Conference Paper
In the context of the Usage Coverage Model of a product-service, design parameters are linked to expected usages that must be covered. This paper implements a physics-based model to provide a performance prediction for each usage context that also depends on user skills. The physics describing the behavior and performances of a jigsaw is establishe...
Article
In this paper, we are considering that the design process can be modelled in the form of a constraint satisfaction problem (CSP). CSP modelling or resolution has proved its efficiency within the framework of single-designer design. We propose to extend the functions of CSP to the context of multi-concept design of the same artefact. We define CoCSP...
Conference Paper
Full-text available
In this paper we are studying the application of techniques to solve constraint satisfaction problems (CSP) for designing mechanical systems. After presenting the CSP method and the several ways to solve it, we introduce an optimization point of view for CSP. Then, we propose a quick overview of CSP application in product engineering. An example in...
Article
In this paper, we are studying the application of techniques to solve constraint satisfaction problems (CSP) for designing mechanical systems. After situating CSPs within the array of search and combinatorial optimisation techniques, we propose to model the design space in the form of a state graph and demonstrate the suitability of the constraint...
Conference Paper
Our research takes place in the field of Design Aid Systems for mechanical sets. The aim of work is to make “right” knowledge model with know-how capitalisation. We present in this article, our approach to validate a priori conceptual models. We have made the choice of an explicit representation to give more efficiency to the verification mechanism...
Conference Paper
The research work presented in this article covers the constitution and reutilization of technical memory (i.e. company know-how and skill). The aim of the work in progress is to verify knowledge models in design aid systems. The declarative product Model is explained in the first section. In the second one, we present the knowledge required for ve...
Chapter
The CAD/CAM systems are widely used nowadays in the mechanical field. Howewer, these systems work almost only with geometric information, whereas design aid facilities, representation and reuse of the designer’s know-how are not taken into account yet. This article deals with KoMoD, a constraint based design support system for mechanical engineerin...
Chapter
Using constraint programming for routine aided design allows us to model the product to be designed as a set of parameters and a set of constraints. The designer’s job consists in valuing all the parameters regarding to this set of constraints. The difficulty relies in the order in which the parameters are valued and in the values which are given....
Chapter
Design is a complex activity. It requires the use of several kinds of knowledge and human qualities such as know-how and creativity. It relies as well on theoretical principals as on empirical facts.
Chapter
The growing interest in the specification and development of user friendly and easy to maintain design tools has urged engineers to develop and use design knowledge acquisition and modelisation methodologies. In this chapter, we present a comparative study of the application of two knowledge modelisation methodologies in the field of mechanical des...
Article
This article describes a tool for the design, the reconfiguration and the simulation of robotized production lines. SARTRE solves the problem of the allocation of spot welding points to parametrised robots. Each robot is characterised by a position in the space, a spot-welding tool and a type of kinematic. The SARTRE resolution mechanism is split i...
Article
Nous proposons d’examiner les apports des techniques de programmation par contrainte en conception et notamment en optimisation de composants mécaniques. Nous présentons le cadre théorique de modélisation d’un problème de satisfaction de contraintes, les principes de résolution et de recherche d’optimum ainsi que leur utilisation potentielle en ing...

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Project
DEPS is a Domain Specific Modeling Language environment intended for industrial and academic usage. The goal with the DEPS effort is to create around the DEPS language and its compiler an integrated modeling and solving environment called DEPS Studio adressing the encountered problems in design synthesis : sizing, configuration, architecture exploration and resource allocation. For more information abour the DEPS language, please visit our website : www.depslink.com