Stepping motor driven constant-shear-rate rotating viscometer

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorDe Lucena, Samuel E.-
Autor(es): dc.creatorKaiser, Walter-
Data de aceite: dc.date.accessioned2025-08-21T21:07:57Z-
Data de disponibilização: dc.date.available2025-08-21T21:07:57Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2004-10-08-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/231112-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/231112-
Descrição: dc.descriptionDespite the frequent use of stepping motors in robotics, automation and in a variety of precision instruments, they can hardly be found in rotational viscometers. This paper proposes the use of a stepping motor to drive conventional constant-shear-rate laboratory rotational viscometer, in order to avoid the use of velocity sensor and gearbox and, thus, simplify the instrument design. To investigate this driving technique, a commercial rotating viscometer has been adapted to be driven by a stepping motor, which is controlled via PC. Special circuitry has been added in order to microstep the stepping motor at a selectable step size, and to condition the torque signal. Tests have been carried out using the prototype to produce three flow curves for a standard Newtonian fluid (920 mPa.s at 25°C) but employing a different microstep size for each of them, within the shear rate range from 50 s-1 to 500 s-1. The results indicate the feasibility of the proposed driving technique.-
Descrição: dc.descriptionDepartment of Electrical Engineering State University of São Paulo, av. Ariberto Cunha, 333, Guaratinguetá, 12516-410, SP-
Descrição: dc.descriptionDept. of Elec. Energy Engineering University of São Paulo, travessa 3, 158, São Paulo, 05508-900, SP-
Formato: dc.format1373-1377-
Idioma: dc.languageen-
Relação: dc.relationConference Record - IEEE Instrumentation and Measurement Technology Conference-
Relação: dc.relation39862-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectComputer-based instrumentation-
Palavras-chave: dc.subjectLaboratory viscometer-
Palavras-chave: dc.subjectMicrostepping-
Palavras-chave: dc.subjectRotational viscometer-
Palavras-chave: dc.subjectStepping motor-
Palavras-chave: dc.subjectViscometer-
Palavras-chave: dc.subjectViscometer design-
Palavras-chave: dc.subjectViscosity measurement-
Título: dc.titleStepping motor driven constant-shear-rate rotating viscometer-
Tipo de arquivo: dc.typeaula digital-
Aparece nas coleções:Repositório Institucional - Unesp

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