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< title > Main articulée | Léa Jean< / title >
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Publié le
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< time > 10-02-2022< / time >
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< h2 id = "contexte" > Contexte< / h2 >
< p > Ce projet s’ est déroulé dans le cadre des projets semestriels du département Génie Mécanique et Productique de l’ IUT de Bordeaux, et évolue en lien avec le parcours robotique.< / p >
< p > Dû au contexte de la crise sanitaire du COVID-19, seules la planification et la mise en place du cahier des charges fonctionnel ont été réalisées. La planification a malgré tout été menée comme si< / p >
< h2 id = "présentation-générale-du-projet" > Présentation générale du projet< / h2 >
< p > Le projet consiste à réaliser une < strong > main articulée< / strong > dont l’ objectif est de < strong > démontrer différentes technologies de liaison utilisables pour les articulations< / strong > .< / p >
< p > Les articulations seront purement mécaniques mais le système peut être amélioré par la motorisation de celui-ci.< / p >
< h2 id = "planification" > Planification< / h2 >
< p > Afin d’ organiser au mieux le projet, il faut le < strong > planifier< / strong > . Il convient alors d’ établir la < strong > liste des tâches< / strong > à réaliser afin de mener à terme le projet, en définissant leurs antécedents (et donc leur chronologie) ainsi que leur durée.< / p >
< p > On établit ensuite un < strong > GANTT< / strong > et un < strong > PERT< / strong > .< / p >
< h2 id = "cahier-des-charges" > Cahier des charges< / h2 >
< p > On procède à une < strong > analyse fonctionnelle< / strong > .< / p >
< p > On établit une < em > bête à corne< / em > qui illustre le besoin du système.< / p >
< p > < img src = "/img/bac.png" alt = "Bête à corne" title = "Bête à corne" > < / p >
< p > La main articulée devra :< / p >
< ul >
< li > bouger selon les commandes de l’ < / li >
< li > pouvoir être montrée à un public par l’ < / li >
< / ul >
< p > Cependant, elle devra aussi s’ ’ ’ ’ ’ ’ ’ < / p >
< p > On établit ainsi les fonctions de service et les fonctions contraintes du système, qu’ on représente dans un < em > diagramme pieuvre< / em > .< / p >
< table >
< thead >
< tr >
< th style = "text-align:left" > < strong > Fonctions de service< / strong > < / th >
< th style = "text-align:left" > < strong > Contraintes d’ < / strong > < / th >
< / tr >
< / thead >
< tbody >
< tr >
< td style = "text-align:left" > FS23 : Obéir aux commandes de l’ < / td >
< td style = "text-align:left" > Ca1 : S’ < / td >
< / tr >
< tr >
< td style = "text-align:left" > FS34 : Montrer la main au public< / td >
< td style = "text-align:left" > Ca2 : S’ ’ < / td >
< / tr >
< tr >
< td style = "text-align:left" > < / td >
< td style = "text-align:left" > Ca3 : S’ < / td >
< / tr >
< tr >
< td style = "text-align:left" > < / td >
< td style = "text-align:left" > Ca4 : S’ ’ < / td >
< / tr >
< / tbody >
< / table >
< p > < img src = "/img/diag-pieuvre.png" alt = "Diagramme pieuvre" title = "Diagramme pieuvre" > < / p >
< p > On regroupe le < strong > besoin fondamental< / strong > , les < strong > fonctions services< / strong > et les < strong > contraintes d’ adaptation< / strong > dans un diagramme FAST.< / p >
< p > < img src = "/img/FAST.png" alt = "FAST" title = "FAST" > < / p >
< p > Contraintes générales :< / p >
< ul >
< li > Le système doit être défini dans un format A4 ;< / li >
< li > Respecter les normes de sécurité ;< / li >
< li > Utiliser des technologies différentes ;< / li >
< li > Age minimum d’ < / li >
< li > Matériaux : utilisation de matières plastiques et d’ ’ aluminium ;< / li >
< li > Énergie : énergie mécanique uniquement ; en cas d’ < / li >
< li > Masse : le système doit être facilement transportable.< / li >
< / ul >
< p > Il est important décrire les < strong > éléments environnants< / strong > au système.vLe projet étant un démonstrateur, il sera exposé dans un environnement sec et sera utilisé par plusieurs personnes lors des présentations.< / p >
< p > On < strong > caractérise< / strong > enfin les fonctions.< / p >
< table >
< thead >
< tr >
< th style = "text-align:left" > < strong > FS23 : Obéir aux commandes de l’ utilisateur< / strong > < / th >
< th style = "text-align:left" > < strong > Critères de l’ action< / strong > < / th >
< th style = "text-align:left" > < strong > Niveaux< / strong > < / th >
< th style = "text-align:left" > < strong > Flexibilité< / strong > < / th >
< / tr >
< / thead >
< tbody >
< tr >
< td style = "text-align:left" > Éléments environnants influents: Environnement, public, utilisateurs< / td >
< td style = "text-align:left" > Commander : Tension (fils)< / td >
< td style = "text-align:left" > A définir par des essais< / td >
< td style = "text-align:left" > Maxi< / td >
< / tr >
< / tbody >
< / table >
< table >
< thead >
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< th style = "text-align:left" > < strong > FS34 : Montrer la main au public< / strong > < / th >
< th style = "text-align:left" > < strong > Critères de l’ action< / strong > < / th >
< th style = "text-align:left" > < strong > Niveaux< / strong > < / th >
< th style = "text-align:left" > < strong > Flexibilité< / strong > < / th >
< / tr >
< / thead >
< tbody >
< tr >
< td style = "text-align:left" > Éléments environnants influents: Environnement, commandes, utilisateurs< / td >
< td style = "text-align:left" > Montrer : Liaisons< / td >
< td style = "text-align:left" > 7< / td >
< td style = "text-align:left" > Mini< / td >
< / tr >
< tr >
< td style = "text-align:left" > Éléments environnants influents: Environnement, commandes, utilisateurs< / td >
< td style = "text-align:left" > Résister à l’ usure : Cycles d’ < / td >
< td style = "text-align:left" > 500/jour< / td >
< td style = "text-align:left" > Maxi< / td >
< / tr >
< / tbody >
< / table >
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< h6 class = "card-subtitle" style = "display:flex; justify-content:center;" > Volontaire en Service Civique< / h6 >
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< p style = "text-align:center;" > Code source modifié par < i style = "color:#ffb92c;" > Léa JEAN< / i > et < i style = "color:#ffb92c;" > Habib BELARIBI< / i > .< / p >
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