{"id":107834,"date":"2018-10-04T22:55:11","date_gmt":"2018-10-04T22:55:11","guid":{"rendered":"https:\/\/\/controleur-de-signal-numerique-accelerant-les-performances-dsp\/"},"modified":"2018-10-04T22:55:11","modified_gmt":"2018-10-04T22:55:11","slug":"controleur-de-signal-numerique-accelerant-les-performances-dsp","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/controleur-de-signal-numerique-accelerant-les-performances-dsp\/","title":{"rendered":"Contr\u00f4leur de signal num\u00e9rique acc\u00e9l\u00e8rant les performances DSP"},"content":{"rendered":"<p>Con\u00e7u pour fournir des performances d\u00e9terministes plus rapides sur les applications de commande soumises \u00e0 des contraintes de temps, les dsPIC33CK poss\u00e8dent davantage de jeux de registres pour r\u00e9duire les latences d&rsquo;interruptions, ainsi qu\u2019une nouvelle ex\u00e9cution des instructions, plus rapide, visant \u00e0 acc\u00e9l\u00e9rer les routines du processeur de signal num\u00e9rique (ou DSP, pour Digital Signal Processor). La famille dsPIC33CK \u00e0 simple c\u0153ur compl\u00e8te la famille double c\u0153ur dsPIC33CH r\u00e9cemment&nbsp;pr\u00e9sent\u00e9e, bas\u00e9e sur le m\u00eame noyau.<\/p>\n<p>Avec&nbsp;une vitesse de 100&nbsp;MIPS, le c\u0153ur du dsPIC33CK atteint des performances quasiment deux fois plus rapides que les DSC dsPIC \u00e0 simple c\u0153ur de la g\u00e9n\u00e9ration pr\u00e9c\u00e9dente, les rendant particuli\u00e8rement adapt\u00e9s pour la commande de moteur, les alimentations num\u00e9riques et les autres applications requ\u00e9rant des algorithmes complexes, comme les capteurs automobiles et les automates industriels. Il est sp\u00e9cialement con\u00e7u pour commander plusieurs moteurs sans balais et sans capteurs, en faisant tourner des algorithmes de contr\u00f4le de flux (FOC, Field-Oriented Control) et la correction du facteur de puissance.&nbsp;<\/p>\n<p>Ces nouveaux DSC sont \u00e9galement con\u00e7us pour faciliter la certification de s\u00e9curit\u00e9 fonctionnelle requise par de nombreuses applications automobiles, m\u00e9dicales ou d\u2019appareils m\u00e9nagers, pour lesquelles un fonctionnement s\u00fbr et l\u2019arr\u00eat automatique en cas de panne sont critiques. Les composants int\u00e8grent des fonctions de s\u00e9curit\u00e9 fonctionnelles destin\u00e9es aux syst\u00e8mes critiques du type&nbsp;:&nbsp;auto-test int\u00e9gr\u00e9 (BIST) de la RAM, qui v\u00e9rifie l\u2019\u00e9tat et le bon fonctionnement de la RAM, un temporisateur de s\u00e9curit\u00e9 (DMT) pour surveiller l\u2019\u00e9tat de l\u2019application logicielle via des interruptions p\u00e9riodiques du temporisateur dans une fen\u00eatre de temps sp\u00e9cifi\u00e9e, un temporisateur de watchdog double (WDT), une m\u00e9moire Flash ECC avec syst\u00e8me de gestion des erreurs, la r\u00e9initialisation BOR en cas de microcoupure, la r\u00e9initialisation \u00e0 la mise sous tension (POR) et une fonction de d\u00e9tection des d\u00e9faillances de l&rsquo;horloge syst\u00e8me (FSCM).<\/p>\n<p>La famille dsPIC33CK int\u00e8gre un bus de communication CAN-FD compatible avec les nouveaux standards de communication automobiles. Elle est dot\u00e9e d\u2019un haut niveau d\u2019int\u00e9gration analogique, comprenant des convertisseurs A\/N haute vitesse (3,5&nbsp;MSPS), des comparateurs analogiques avec CNA, et des amplificateurs op\u00e9rationnels, permettant aux applications de commande de moteur d\u2019avoir une empreinte r\u00e9duite et des co\u00fbts mat\u00e9riels moins importants.&nbsp;Les DSC affichent une r\u00e9solution PWM de 250&nbsp;ps, id\u00e9ale pour les topologies d\u2019alimentation num\u00e9rique avanc\u00e9es. La mise \u00e0 jour automatique du firmware (avec jusqu\u2019\u00e0 2&nbsp;x&nbsp;128&nbsp;ko de blocs) est \u00e9galement int\u00e9gr\u00e9e pour les syst\u00e8mes \u00e0 haute disponibilit\u00e9, ce qui est particuli\u00e8rement important pour les alimentations num\u00e9riques.<\/p>\n<p>Le dsPIC33CK est compatible avec l\u2019\u00e9cosyst\u00e8me de d\u00e9veloppement MPLAB de Microchip, y compris avec l\u2019environnement de d\u00e9veloppement maintes fois prim\u00e9 MPLAB X, t\u00e9l\u00e9chargeable gratuitement, avec le g\u00e9n\u00e9rateur de code MPLAB Code Configurator (MCC), la suite d\u2019outils XC16 (compilateurs C) et les outils de d\u00e9bogage\/programmation de circuit MPLAB.<\/p>\n<p><a href=\"http:\/\/www.microchip.com\">www.microchip.com<\/a><\/p>\n<h3 class=\"title\"><a href=\"http:\/\/www.electronique-eci.com\/news\/modem-cpl-pour-repondre-aux-marches-des-compteurs-intelligents\">Modem CPL pour r\u00e9pondre aux march\u00e9s des compteurs intelligents<\/a><\/h3>\n<h3 class=\"title\"><a href=\"http:\/\/www.electronique-eci.com\/news\/securite-automobile-protegez-les-reseaux-du-piratage\">S\u00e9curit\u00e9 automobile : prot\u00e9gez les r\u00e9seaux du piratage <\/a><\/h3>\n<h3 class=\"title\"><a href=\"http:\/\/www.electronique-eci.com\/news\/kits-devaluation-pour-applications-iot\">Kits d&rsquo;\u00e9valuation pour applications IoT<\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"<p>Microchip annonce le lancement de la nouvelle famille de contr\u00f4leurs de signal num\u00e9rique 16 bits dsPIC33CK, qui offre aux d\u00e9veloppeurs syst\u00e8me la puissance d\u2019un DSP associ\u00e9e \u00e0 la simplicit\u00e9 de conception d\u2019un microcontr\u00f4leur.<\/p>\n","protected":false},"author":9,"featured_media":107835,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1141],"class_list":["post-107834","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Contr\u00f4leur de signal num\u00e9rique acc\u00e9l\u00e8rant les performances ...<\/title>\n<meta name=\"description\" content=\"Microchip annonce le lancement de la nouvelle famille de contr\u00f4leurs de signal num\u00e9rique 16 bits dsPIC33CK, qui offre aux d\u00e9veloppeurs syst\u00e8me la...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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