Results 91 to 100 of about 14,722 (279)

Temperature drift suppression for micro‐electro‐mechanical system gyroscope based on vibrational‐displacement control with harmonic amplitude ratio

open access: yesMicro & Nano Letters
Micro‐electro‐mechanical system gyroscope detection output is susceptible to drift due to ambient temperature variations. Furthermore, the drive‐mode vibration amplitude is affected by the signal pickup circuit and structural parameters, which ...
Feng Bu   +5 more
doaj   +1 more source

High Performance FM Gyroscopes [PDF]

open access: yes, 2017
MEMS gyroscopes are used in a wide range of applications such as gaming and image stabilization. However, the poor long-term stability of consumer MEMS gyroscopes precludes their use in demanding applications such as inertial navigation. Although devices
Eminoglu, Burak
core  

Using wearable devices to analyze the everyday gait differences between runners and nonrunners

open access: yesJournal of Intelligent Medicine, EarlyView.
Through the analysis of wearable devices and machine learning, it is found for the first time that the gait of marathon runners is significantly different from that of ordinary people. This shows that long‐term long‐distance running training can optimize the walking mode or help reduce the risk of falling.
Liwen Kong   +4 more
wiley   +1 more source

Leg Motion Classification with Artificial Neural Networks Using Wavelet-Based Features of Gyroscope Signals

open access: yesSensors, 2011
We extract the informative features of gyroscope signals using the discrete wavelet transform (DWT) decomposition and provide them as input to multi-layer feed-forward artificial neural networks (ANNs) for leg motion classification.
Billur Barshan, Birsel Ayrulu-Erdem
doaj   +1 more source

Advances in Atomic Gyroscopes: A View from Inertial Navigation Applications

open access: yes, 2012
With the rapid development of modern physics, atomic gyroscopes have been demonstrated in recent years. There are two types of atomic gyroscope. The Atomic Interferometer Gyroscope (AIG), which utilizes the atomic interferometer to sense rotation, is an ...
Jie Qin, JianCheng Fang
core   +1 more source

Static and Dynamic Analysis of Porous Gas Bearings Lubricated With Air, Refrigerant R‐134a, Helium and Hydrogen

open access: yesLubrication Science, EarlyView.
ABSTRACT Porous gas bearings (PGBs) enable high‐speed, oil‐free operation in modern rotating machinery. This study develops a coupled thermo‐hydrodynamic (THD) model for a cylindrical porous gas bearing lubricated with four working fluids—air, R‐134a, helium and hydrogen.
S. Bechiri, B. Bouchehit, B. Bou‐Saïd
wiley   +1 more source

Gait Event Detection during Stair Walking Using a Rate Gyroscope

open access: yesSensors, 2014
Gyroscopes have been proposed as sensors for ambulatory gait analysis and functional electrical stimulation systems. These applications often require detection of the initial contact (IC) of the foot with the floor and/or final contact or foot off (FO ...
Paola Catalfamo Formento   +3 more
doaj   +1 more source

Inertial‐Based LQG Control: A New Look at Inverted‐Pendulum Stabilization

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Linear‐quadratic Gaussian (LQG) control is a well‐established method for optimal control through state estimation, particularly in stabilizing an inverted pendulum on a cart. In standard laboratory setups, sensor redundancy enables direct measurement of configuration variables using displacement sensors and rotary encoders. However, in outdoor
Daniel Engelsman, Itzik Klein
wiley   +1 more source

Detection of Tennis Activities with Wearable Sensors

open access: yesSensors, 2019
This paper aims to design and implement a system capable of distinguishing between different activities carried out during a tennis match. The goal is to achieve the correct classification of a set of tennis strokes. The system must exhibit robustness to
Luis Benages Pardo   +2 more
doaj   +1 more source

MEMS-based hemispherical resonator gyroscopes [PDF]

open access: yes, 2012
pre-printThis paper introduces a fabrication technique that uses planar MEMS micromachining processes to produce hemispherical resonating shells for gyroscopes. The hemispheres exhibit a quality factor in excess of 20,000 with resonant frequencies in the
Pai, P.; Chowdhury, F. K.; Tabib-Azar, M.   +1 more
core  

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