Proposition of an off-line learning current modulation for torque-ripple reduction in switched reluctance motors: Design and experimental evaluation

Abstract—A new offline current modulation using a neuro-fuzzy compensation scheme for torque-ripple reduction in switched reluctance motors is presented. The main advantage of the proposed technique is that the torque signal is unnecessary. The compensating signal is learned prior to normal operation in a self-commissioning run, capturing the necessary current shape to reduce the torque ripple. Simulation results verify first the effects of speed and then load changes on the compensator performance. Implementation of the proposed technique in a laboratory prototype shows the feasibility and accuracy of the respective offline scheme. Index Terms—Automatic learning, fuzzy neural networks, intelligent control, switched reluctance drives, torque-ripple minimization. I

UMA EXPERIÊNCIA DE ETNODESENVOLVIMENTO E ECONOMIA SOLIDÁRIA NUMA COMUNIDADE TRADICIONAL QUILOMBOLA DE PARATY: TERRITÓRIO, GERAÇÃO DE TRABALHO E RENDA E EDUCAÇÃO

O trabalho apresentado trata-se de uma pequena experiência de Etnodesenvolvimento e Economia Solidária em uma comunidade tradicional Quilombola na Região da Costa Verde, no município de Paraty – RJ, chamada Campinho da Independência, com uma população de 59 famílias e 3 núcleos familiares, numa área titulada em 23 de março de 1999, com 287,9461 hectares.O objetivo principal do projeto de extensão - Proext/MEC/SESu 2015 é contribuir para o Etnodesenvolvimento, através do fomento à Economia Solidária e o fortalecimento das organizações locais, culturais e empreendimentos quilombolas, por meio de processos de formação dialógicos, da pesquisa-ação, formação de redes e de cadeias produtivas; Identificar e criar espaços de geração de trabalho e renda na comunidade. Com base no conceito de desenvolvimento local, atuamos em três frentes de pesquisas: a) Estudo sobre gestão dos empreendimentos solidários (turismo de base comunitária, restaurante tradicional e casa de artesanatos); b) Geração de renda com aplicação de tecnologias de energias alternativas; c) Educação de jovens usando a metodologia do CinÊNCIA (Cine com Ciência na Mochila - Alfabetização Visual, Semiótica e Cultura).Foram diagnosticadas  na última visita  a campo algumas demandas passíveis de realização: Aplicação de tecnologias de energias renováveis suprindo o restaurante através de fontes alternativas, dado o alto preço da conta de luz e instalação de postes solares em áreas públicas específicas. Houve também uma proposta de haver oficinas para que a própria comunidade solucione questões simples de manutenção do sistema.A multidisciplinaridade  permite parceria com Rede de Informação e Pesquisa em Resíduos RIPeR-    contribuindo  para implementação da economia solidária participando do Fórum,  analisando demanda  sobre  coleta seletiva  nos territórios tradicionais e a utilização dos mesmos para geração de renda, com intuito de fazer   com que as políticas publicas sejam efetivadas.  Podendo contar com  diversos parceiros no território: APA Cairuçu, Secretaria de Turismo de Paraty, Secretaria de Cultura de Paraty e Secretaria de Educação de Paraty, Escola TecNaval da UFRJ, Núcleo Interdisciplinar de Desenvolvimento Social – NIDES, Núcleo Solidariedade Técnica –SOLTEC, Laboratório CinÊNCIA/UFRJ, Cáritas Brasileiras, Instituto Federal do Rio de Janeiro - IFRJ e Secretaria Nacional de Economia Solidária - SENAES/MTE.Em suma o projeto visa elaborar uma diretriz de planejamento que contribua para o desenvolvimento local, apoiando-se no fortalecimento e sustentabilidade dos empreendimentos de economia popular solidária, com a promoção da igualdade racial em iniciativas de geração de trabalho e renda e do patrimônio turístico da comunidade Quilombola

NEOTROPICAL ALIEN MAMMALS: a data set of occurrence and abundance of alien mammals in the Neotropics

Biological invasion is one of the main threats to native biodiversity. For a species to become invasive, it must be voluntarily or involuntarily introduced by humans into a nonnative habitat. Mammals were among first taxa to be introduced worldwide for game, meat, and labor, yet the number of species introduced in the Neotropics remains unknown. In this data set, we make available occurrence and abundance data on mammal species that (1) transposed a geographical barrier and (2) were voluntarily or involuntarily introduced by humans into the Neotropics. Our data set is composed of 73,738 historical and current georeferenced records on alien mammal species of which around 96% correspond to occurrence data on 77 species belonging to eight orders and 26 families. Data cover 26 continental countries in the Neotropics, ranging from Mexico and its frontier regions (southern Florida and coastal-central Florida in the southeast United States) to Argentina, Paraguay, Chile, and Uruguay, and the 13 countries of Caribbean islands. Our data set also includes neotropical species (e.g., Callithrix sp., Myocastor coypus, Nasua nasua) considered alien in particular areas of Neotropics. The most numerous species in terms of records are from Bos sp. (n = 37,782), Sus scrofa (n = 6,730), and Canis familiaris (n = 10,084); 17 species were represented by only one record (e.g., Syncerus caffer, Cervus timorensis, Cervus unicolor, Canis latrans). Primates have the highest number of species in the data set (n = 20 species), partly because of uncertainties regarding taxonomic identification of the genera Callithrix, which includes the species Callithrix aurita, Callithrix flaviceps, Callithrix geoffroyi, Callithrix jacchus, Callithrix kuhlii, Callithrix penicillata, and their hybrids. This unique data set will be a valuable source of information on invasion risk assessments, biodiversity redistribution and conservation-related research. There are no copyright restrictions. Please cite this data paper when using the data in publications. We also request that researchers and teachers inform us on how they are using the data

NEOTROPICAL CARNIVORES: a data set on carnivore distribution in the Neotropics

Mammalian carnivores are considered a key group in maintaining ecological health and can indicate potential ecological integrity in landscapes where they occur. Carnivores also hold high conservation value and their habitat requirements can guide management and conservation plans. The order Carnivora has 84 species from 8 families in the Neotropical region: Canidae; Felidae; Mephitidae; Mustelidae; Otariidae; Phocidae; Procyonidae; and Ursidae. Herein, we include published and unpublished data on native terrestrial Neotropical carnivores (Canidae; Felidae; Mephitidae; Mustelidae; Procyonidae; and Ursidae). NEOTROPICAL CARNIVORES is a publicly available data set that includes 99,605 data entries from 35,511 unique georeferenced coordinates. Detection/non-detection and quantitative data were obtained from 1818 to 2018 by researchers, governmental agencies, non-governmental organizations, and private consultants. Data were collected using several methods including camera trapping, museum collections, roadkill, line transect, and opportunistic records. Literature (peer-reviewed and grey literature) from Portuguese, Spanish and English were incorporated in this compilation. Most of the data set consists of detection data entries (n = 79,343; 79.7%) but also includes non-detection data (n = 20,262; 20.3%). Of those, 43.3% also include count data (n = 43,151). The information available in NEOTROPICAL CARNIVORES will contribute to macroecological, ecological, and conservation questions in multiple spatio-temporal perspectives. As carnivores play key roles in trophic interactions, a better understanding of their distribution and habitat requirements are essential to establish conservation management plans and safeguard the future ecological health of Neotropical ecosystems. Our data paper, combined with other large-scale data sets, has great potential to clarify species distribution and related ecological processes within the Neotropics. There are no copyright restrictions and no restriction for using data from this data paper, as long as the data paper is cited as the source of the information used. We also request that users inform us of how they intend to use the data