Banca de DEFESA: RAFAEL FERREIRA ALVES DE ASSIS
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.DISCENTE : RAFAEL FERREIRA ALVES DE ASSIS
DATA : 01/06/2018
HORA: 09:00
LOCAL: AUditório do nPITI
TÍTULO:
Design of a NTC Thermistor-Based Thermal Anemometer with Linearized Feedback Model
PALAVRAS-CHAVES:
Constant temperature anemometer, sensitivity, thermoresistive sensors, feedback linearization
PÁGINAS: 73
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Elétrica
SUBÁREA: Medidas Elétricas, Magnéticas e Eletrônicas; Instrumentação
RESUMO:
The velocity or volumetric flow measurement of laminar or turbulent flow meet various engineering applications. Thus, scientific research for the development of architectures and measurement techniques for these quantities is of great relevance and is constantly expanding. Among the existing architectures for anemometric applications in an indistinct flow regime, thermal anemometers denotes several advantages such as excellent bandwidth, spatial resolution and low cost. This is basically a thermistor connected to one of the arms of a modified Whetstone bridge. Although it has simple configuration, it has some limitations imposed by the non-linear relation between the temperature and the quantity applied to the sensor. In addition, it contributes as a limiting non-ideality of the operational amplifier that makes up the architecture. Therefore, it is proposed the design and implementation of a thermal anemometer architecture with linearization of the relation with the temperature by voltage feedback and using a thermoresistive sensor of the NTC type. We also promote comparisons between the classic anemometer and the one proposed in this work. For this, the validation of the proposed architecture is conducted through simulations, as well as experimental comparison with classical and other instrument
MEMBROS DA BANCA:
Presidente - 1284113 - SEBASTIAN YURI CAVALCANTI CATUNDA
Interno - 2140683 - DIOMADSON RODRIGUES BELFORT
Externo à Instituição - JUAN MOISES MAURICIO VILLANUEVA - UFPB