Results 101 to 110 of about 73,187 (304)

Vision‐Augmented Wearable Interfaces: Bioinspired Approaches for Realistic AI‐Human‐Machine Interaction

open access: yesAdvanced Materials Technologies, EarlyView.
This review presents recent progress in vision‐augmented wearable interfaces that combine artificial vision, soft wearable sensors, and exoskeletal robots. Inspired by biological visual systems, these technologies enable multimodal perception and intelligent human–machine interaction.
Jihun Lee   +4 more
wiley   +1 more source

Control Synchronization of Two Nonidentical Homodromy Exciters in Nonlinear Coupled Vibration System

open access: yesIEEE Access, 2019
In order to analyze synchronization control problems of two non-identical homodromy eccentric rotors (ERs) in a nonlinearly coupled system of vibrating machinery-part (NCS-VMP), a new electromechanical coupling nonlinear dynamic model considering ...
Zhilong Huang   +3 more
doaj   +1 more source

Additive‐Manufactured, Multifunctional Bioreactor Technology for Dynamic Culture of 3D Bioprinted Tissue Models

open access: yesAdvanced Materials Technologies, EarlyView.
We introduce an additively manufactured bioreactor with a perfusion flow system and integrated temperature and pH sensors for skeletal muscle tissue biofabrication. The bioreactor's performance was evaluated by assessing the viability, spreading of the myoblast cells in a printed scaffold, and contraction of the isolated murine musculi interossei ...
Lys Sprenger   +9 more
wiley   +1 more source

A time-domain substructure synthesis for finite rotations of flexible mechanical systems

open access: yesMATEC Web of Conferences, 2018
This paper presents a floating IBS method for dynamic prediction of structures with finite rotations. The conventional IBS (impulse-based substructuring) method is efficient and accurate in structural transient impact analysis.
Chen Shulin, Liu Li, Chen Zhaoyue
doaj   +1 more source

Dynamics and control of advanced space vehicles, volume 1 [PDF]

open access: yes
The following studies are reported: (1) Modal analyses of elastic continua for Liapunov stability analysis of flexible spacecraft; (2) development of general purpose simulation equations for arbitrary spacecraft; (3) evaluation of alternative ...
Likins, P. W.
core   +1 more source

Index to NASA Tech Briefs, January - June 1966 [PDF]

open access: yes, 1966
Index to NASA technological innovations for January-June ...

core   +1 more source

Graphene‐Based Wearable Textile Triboelectric Nanogenerators and Biomechanical Sensors

open access: yesAdvanced Materials Technologies, EarlyView.
This study presents a wearable textile‐based triboelectric nanogenerator (T‐TENG) using sprayed graphene enhanced with a PVA adhesion layer. The graphene‐based electrode demonstrates high electrical conductivity and robustness to multiple bends. The fabricated T‐TENG provides stable and efficient output, with strong responsiveness to biomotion.
Hongyang Dang   +4 more
wiley   +1 more source

Fault Diagnosis of Rolling Bearing based on Sideband Correlation Algorithm and Hilbert Envelope Spectrum

open access: yesJixie chuandong, 2016
In order to monitor and diagnosis running status of rolling bearing in the rotating machinery,a new method of rolling bearing fault diagnosis based on sideband correlation algorithm and Hilbert envelope spectrum is put forward.
Wang Miaoqing, Gu Jun, Liu Qing
doaj  

Model-Tracking-Based 3D Vibration Distribution Measurement of a Hovering Multicopter Using Stereo HFR Cameras

open access: yesIEEE Access
A comprehensive understanding of structural vibration distributions during multicopter flight, along with their correlation with flight trajectory and operational status, which are influenced by load conditions, battery levels, and weather variations, is
Takuto Ogata   +3 more
doaj   +1 more source

Simulation of Fretting Fatigue in Conformal and Concentrated Contacts

open access: yesTribology Online, 2011
Fretting fatigue is a possible failure mode of rolling bearings, as well as for other machine elements with contacts. For a rotating bearing it normally can occur in the interfaces between outer ring/housing, and inner ring/shaft.
Dag Fritzson   +2 more
doaj   +1 more source

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