Results 101 to 110 of about 11,947 (254)

Blind separation of asymmetric signals based on Synchrosqueezing Wavelet Transform

MATEC Web of Conferences, 2018
A blind separation algorithm based on synchronous squeezing wavelet transform is proposed to solve the blind separation problem of single channel asymmetric signals in satellite communications.
Peng Chuang, Yang Xiaojing, Zhang Yu
doaj   +1 more source

Omnidirectional Shape Proprioception for Untethered Shape Memory Alloy‐Driven Soft Robotic Arms

Advanced Intelligent Systems, EarlyView.
A lightweight, modular soft robotic arm employs SMA actuation and a multi‐Hall‐magnet sensing system to achieve accurate omnidirectional shape proprioception. Each 35 g segment enables scalable assembly, while robust proprioception supports versatile navigation and manipulation in complex, unstructured environments.
Yiming Ouyang, Zelin Chen, He Chen, Min Xu, Hao Yang, Wei Gao, Hu Jin, Shiwu Zhang   +7 more
wiley   +1 more source

Algorithm to demodulate an electromyogram signal modulated by essential tremor

ROBOMECH Journal, 2017
Essential tremor is a disorder that causes involuntary oscillations in patients both while they are engaged in actions and when maintaining a posture. Such patients face serious difficulties in performing daily living activities such as meal movement. We
Yuya Matsumoto, Masatoshi Seki, Yasutaka Nakashima, Takeshi Ando, Yo Kobayashi, Hiroshi Iijima, Masanori Nagaoka, Masakatsu G. Fujie   +7 more
doaj   +1 more source

SYNCHRONOUS DEMODULATION OF PIXELATED PHASE-SHIFTED INTERFEROGRAMS FOR DYNAMIC INTERFEROMETRY [PDF]

, 2014
"Single-shot phase-shifting interferometers have become a de facto standard in interferometry for the study of fast dynamic phenomena and/or to achieve low-sensitivity to environmental vibrations.
Moises Padilla
core  

Research on Diaphragm Pump Fault Diagnosis Method Based on Res‐DCB‐Net

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Nonstationary pressure pulsation signals of diaphragm pumps contain strong background noise and coupled characteristics. This makes it challenging to extract incipient fault features and to decouple faults with similar physical mechanisms. To address these limitations, this paper proposes a spatiotemporal fault diagnosis model named Res‐DCB ...
Jiahui Wang, Kaili Zhang, Yongxing Song, Zhaoxin Ma, Sitong Guan, Rongwang Chai, Kexiang Ceng, Jingting Liu   +7 more
wiley   +1 more source

Integrated Waveform Design of Radar and Communication Based on Chirp-rate Hopping Modulation [PDF]

Radioengineering
The increasing demand for spectrum resources and the need for reducing the burden of modern electronic combat platforms have prompted the development of integrated radar and communication systems.
G. Q. Zhang, X. Rao, J. L. Fu, W. W. Hu, J. F. Hu   +4 more
doaj  

Multi-stages helical gearbox fault detection using vibration signal and Morlet wavelet transform adapted by information entropy difference [PDF]

Although the wavelet analysis is a powerful tool and has been widely used for the vibration signal based gearbox fault diagnosis, there are some limitations that undermine its application.
Gu, Fengshou, Ball, Andrew, Tung Tran, Van, Elbarghathi, Fathalla, Tian, Xiange   +4 more
core  

Optimizing Strategies for Non‐Invasive Prospection of Settlements in the Intertidal Zone: A Case Study From the Centre of the Drowned Medieval Village of Tolsende (Scheldt Estuary, the Netherlands)

Archaeological Prospection, EarlyView.
ABSTRACT Medieval and early modern drowned villages in the intertidal zone of the Scheldt estuary (the Netherlands) constitute intriguing yet largely understudied components of north‐western Europe's underwater cultural heritage. Despite their high archaeological potential as time capsules of past settlement landscapes, research has remained limited ...
Jan Trachet, Sarah Bäumler, Stefan Krojer, Jeroen Verhegge, Wim De Clercq, Philippe De Smedt, Wouter H. Maes, Bente S. Majchczack, Immo Trinks, Dennis Wilken   +9 more
wiley   +1 more source

Transient Charging Dynamics in Stacked Ga2O3/ZnO Photovoltaic Units Governing Wavelength‐Selective Polarity Switching

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work reveals a “Photovoltaic‐Capacitance” coupling mechanism in stacked Ga2O3/ZnO devices, defining the ZnO/graphene interface as a novel Photovoltaic Dynamic‐Capacitor (PDC). The wavelength‐selective bipolar response enables a physical layer secure communication protocol based on ternary optical logic (“1,” “0,” “−1”).
Songqi Zhao, Man Zhao, Dayong Jiang, Yuhan Duan, Haoming Wei, Qingcheng Liang, Rui Deng   +6 more
wiley   +1 more source

Flexible wearable electronics for cardiovascular monitoring from surface signals to deep physiological insights

FlexMat, EarlyView.
This review organizes flexible wearable electronics for cardiovascular monitoring into four interconnected information layers: surface electrophysiology, hemodynamic sensing, vascular imaging, and biofluid biomarker analysis. This framework clarifies how electrical rhythm, vascular loading, structural and flow‐related features, and biochemical states ...
Qiao Chen, Hongwen Chen, Yuanyuan Li, Pingan Yang, Rui Li, Zhihao Zhou   +5 more
wiley   +1 more source