| 1. Identificação | |
| Tipo de Referência | Artigo em Evento (Conference Proceedings) |
| Site | plutao.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | J8LNKAN8RW/3ARN457 |
| Repositório | dpi.inpe.br/plutao/2011/11.23.16.21.32 |
| Última Atualização | 2012:10.03.16.28.03 (UTC) administrator |
| Repositório de Metadados | dpi.inpe.br/plutao/2011/11.23.16.21.33 |
| Última Atualização dos Metadados | 2021:02.11.18.15.52 (UTC) administrator |
| Rótulo | lattes: 0288494962313241 1 CarraraSiquOliv:2011:SpCuMo |
| Chave de Citação | CarraraSiquOliv:2011:SpCuMo |
| Título | Speed and current mode strategy comparison in satellite attitude control with reaction wheels  |
| Formato | DVD |
| Ano | 2011 |
| Data de Acesso | 10 maio 2024 |
| Tipo Secundário | PRE CN |
| Número de Arquivos | 1 |
| Tamanho | 366 KiB |
| 2. Contextualização | |
| Autor | 1 Carrara, Valdemir 2 Siqueira, Rafael Henrique 3 Oliveira, Danilo Anderson de |
| Grupo | 1 DMC-ETE-INPE-MCT-BR |
| Afiliação | 1 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Endereço de e-Mail do Autor | 1 val@dem.inpe.br 2 rafael_controle_automacao@yahoo.com.br 3 danilo_dasors@yahoo.com.br |
| Endereço de e-Mail | val@dem.inpe.br |
| Nome do Evento | Brazilian Congress of Mechanical Engineering, 21 (COBEM). |
| Localização do Evento | Natal |
| Data | 24-28 Oct. 2011 |
| Título do Livro | Proceedings |
| Tipo Terciário | Paper |
| Histórico (UTC) | 2011-11-24 11:03:14 :: lattes -> secretaria.cpa@dir.inpe.br :: 2011 2012-10-03 16:28:04 :: secretaria.cpa@dir.inpe.br -> administrator :: 2011 2021-02-11 18:15:52 :: administrator -> marciana :: 2011 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Tipo de Versão | publisher |
| Palavras-Chave | attitude control reaction wheel dynamic model compensation control |
| Resumo | Within the motto smaller, cheaper and better, several nations can have now easy access to space, both buying or developing their own satellites. In fact, the number of small companies and even universities that make business selling space platforms weighting less than 100 kg, including payload, increases each day. If in the past small satellites mean also low power, low pointing accuracy, low price and therefore low reliability, today it is no longer valid. Some low cost satellites have 3 axis attitude control systems with high degree of pointing accuracy, like FedSat, CHIPSat and MOST. The pointing requirements for MOST (Canadas space telescope) are 25 arc-seconds in the telescope focal plane. The once expensive 3 axis attitude control system, based on gyros, star tracker and reactions wheels is now affordable for micro-satellites, giving both reliability and pointing accuracy for scientific and technological satellites. The attitude and control subsystem (ACS) acts on the reaction wheels in response to attitude errors provided by star tracker and gyros. Reactions wheels are simple brushless DC motor, coupled to a high inertia wheel. They provide torques over wide magnitude range, from micro Newton-meter up to hundreds of mili-Newtonmeter. Normally they are operated in speed control mode in which an internal closed loop control adjusts the motor current in order to achieve a commanded angular rate. Although reaction wheels can also operate in current mode, the non-linear bearing friction, mainly in low speed rates, causes attitude deviation whenever the wheel changes its rotation sense. By the other hand, speed control mode introduces some time lack due to the internal control loop. This work aims to model the non-linear friction of the wheel, and to compensate it in the attitude control loop based in current mode. The reaction wheel and gyro are assembled in a one-axis air-bearing table, which provides micro friction similar to those encountered in space. Furthermore, both control modes, speed and current, shall be compared. The results proved to be helpful in deciding which strategy shall be used in future micro-satellite missions. |
| Área | ETES |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDMC > Speed and current... |
| Conteúdo da Pasta doc | acessar |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| URL dos dados | http://urlib.net/ibi/J8LNKAN8RW/3ARN457 |
| URL dos dados zipados | http://urlib.net/zip/J8LNKAN8RW/3ARN457 |
| Idioma | en |
| Arquivo Alvo | Carrara_COBEM2011.pdf |
| Grupo de Usuários | lattes marciana secretaria.cpa@dir.inpe.br |
| Grupo de Leitores | administrator marciana |
| Visibilidade | shown |
| Permissão de Leitura | allow from all |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/446AF4B |
| URL (dados não confiáveis) | http://www2.dem.inpe.br/val/publicacoes/Carrara_COBEM2011.pdf |
| Acervo Hospedeiro | dpi.inpe.br/plutao@80/2008/08.19.15.01 |
| 6. Notas | |
| Notas | Setores de Atividade: Atividades profissionais, científicas e técnicas. |
| Campos Vazios | archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi edition editor isbn issn lineage mark mirrorrepository nextedition numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark serieseditor session shorttitle sponsor subject tertiarymark type volume |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |