Inertial Sensors
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Gait variability and symmetry assessment with inertial sensors for quantitative discrimination of Trendelenburg sign in total hip arthroplasty patients: a pilot study based on convenience sampling
Abstract Introduction The aim of this pilot study based on convenience sampling was to analyze the feasibility to quantitatively discriminate Trendelenburg sign (TS), a characteristic drop in pelvic position during gait in hip disfunctions, in patients with total hip arthroplasty (THA), by assessing gait variability and symmetry using inertial sensors. Me
Res. Biomed. Eng.. Publicado em: 19/03/2018
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2. An Innovative Structural Fatigue Monitoring Solution for General Aviation Aircraft
ABSTRACT: This article proposes a novel and effective solution for estimating fatigue life of General Aviation (GA) airframes using flight data produced by digital avionics systems, which are being installed or retrofitted into a growing number of GA aircraft. In the proposed implementation, a flight dynamics model is adopted to process the recorded flight d
J. Aerosp. Technol. Manag.. Publicado em: 26/02/2018
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3. Experimental Magnetometer Calibration for Nanosatellites’ Navigation System
ABSTRACT This article deals with the problem of Earth’s magnetic field sensors calibration in the context of low-cost nanosatellites’ navigation systems. The attitude of space vehicles can be determined from the state estimation using information from three-axis inertial and non-inertial sensors. This study considers a three-axis solid-state magnetometer
J. Aerosp. Technol. Manag.. Publicado em: 2016-03
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4. Evaluation of gait performance of knee osteoarthritis patients after total knee arthroplasty with different assistive devices
IntroductionNowadays Knee Osteoarthritis (KOA) affects a large percentage of the elderly, and one solution is to perform a Total Knee Arthroplasty (TKA). In this paper, one intends to study the gait and posture of these patients after the TKA, while walking with three assistive devices (ADs) (crutches, standard walker (SW) and rollator with forearm supports
Res. Biomed. Eng.. Publicado em: 29/09/2015
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5. Assessment of walker-assisted gait based on Principal Component Analysis and wireless inertial sensors
INTRODUCTION:This study investigates a gait research protocol to assess the impact of a walker model with forearm supports on the kinematic parameters of the lower limb during locomotion. METHODS: Thirteen healthy participants without any history of gait dysfunction were enrolled in the experimental procedure. Spatiotemporal and kinematic gait parameters wer
Rev. Bras. Eng. Bioméd.. Publicado em: 2014-09
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6. Navegação terrestre usando unidade de medição inercial de baixo desempenho e fusão sensorial com filtro de Kalman adaptativo suavizado. / Terrestrial navigation using low-grade inertial measurement unit and sensor fusion with smoothed adaptive Kalman filter.
This work presents the development of the mathematical models and the algorithms of a sensor fusion system for terrestrial navigation using a low-grade inertial measurement unit (IMU) and the Extended Kalman Filter. The models were developed on the basis of the strapdown inertial navigation systems (SINS). Low-grade designates an IMU that is not able to perf
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/06/2011
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7. Métodos de navegação inercial aplicados a lançamentos submarinos. / Inertial navigation methods applied to submarine launching.
A demanda crescente por petróleo impulsiona a exploração marítima desta riqueza para águas cada vez mais profundas. O aumento da lâmina dágua exige novas soluções de engenharia principalmente no que se refere à operação de unidades flutuantes de produção. Dentre os desafios impostos pelos novos ambientes de prospecção, destaca-se o processo d
Publicado em: 2011
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8. IntegraÃÃo de dados de navegaÃÃo de um robà bÃpede
Este trabalho està focado na modelagem matemÃtica e simulaÃÃo de um robà bÃpede. Parte da nossa modelagem matemÃtica visa calcular as posiÃÃes e velocidades de cada ponto do robà bÃpede, em cada instante de tempo, nos seus aspectos cinemÃticos a partir de dados obtidos de sensores inerciais. Neste trabalho essa modelagem foi feita atravÃs da uti
Publicado em: 2008
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9. ESPECTROS DE TURBULÊNCIA EM TERRENO COMPLEXO
Throughout this paper a spectral analysis is conducted on the superficial limit layer in complex terrains. The data used were collected in the central part of the state of Rio Grande do Sul, in the Valley of Jacuí River. A 15-meter tower, with fast-response sensors and slowresponse ones, collected data at frequencies of 10 Hz and 1 Hz, in July and August 20
Publicado em: 2008
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10. Balanço de energia e evapotranspiração de cafezal adensado em crescimento sob irrigação localizada. / Energy balance and evapotranspiration in a high density young coffee under located irrigation.
The objectives of this study were to evaluate the magnitude of global evapotranspiration (ETc) in a high density young coffee crop (3.5mx0.9m) under drip irrigation, the ETc partition considering hedgerows and interrows, and the partition of the available radiant energy between sensible and latent heat fluxes. The experiments were conducted from September 20
Publicado em: 2005
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11. A Test Bed Applied Mobile Robot Navigation
It is presented a test bed applied to studies on dynamics, control, and navigation of mobile robots. A cargo ship scale model was chosen, which can be radio-controlled or operated autonomously through an embedded control system. A control program, which manages on board mission execution, is implemented on a microcontroller. Navigation is based on an electro
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2002-05