Results 251 to 260 of about 77,768 (302)

Vibration Measurement of Signal Bonds for Shinkansen

2021 IEEE International Conference on Consumer Electronics (ICCE), 2021
In automatic train control systems, which are indispensable for train services, a signal bond is used for positioning of and communicating with trains, and is welded to a rail. If the signal bond welded to the rail falls off over time and loses its electrical connection, trains cannot be operated.
Yuki Echigo, Satoshi Ohtake
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Review of Vibration Signals Trend Forecasting Methods

Procedia Environmental Sciences, 2011
Vibration signals are important information for system failures. Forecasting the trend of vibration signals is an important content of condition monitoring, life estimation and fault diagnosis.
Chen, Cancan, Li, Hao, Yan, Guirong, Wang, Cheng   +3 more
exaly   +2 more sources

Exploiting vibrational resonance in weak-signal detection

Physical Review E, 2017
In this paper, we investigate the first exploitation of the vibrational resonance (VR) effect to detect weak signals in the presence of strong background noise. By injecting a series of sinusoidal interference signals of the same amplitude but with different frequencies into a generalized correlation detector, we show that the detection probability can
Ren, Yuhao, Pan, Yan, Duan, Fabing, Chapeau-Blondeau, François, Abbott, Derek   +4 more
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Vibration comfort assessment of tractor drivers based on sEMG and vibration signals

Computer Methods in Biomechanics and Biomedical Engineering, 2023
In order to comprehensively evaluate the driver's vibration comfort under different vibration conditions, eighteen subjects were required to drive a tractor at different speeds on field and asphalt roads respectively in the real vehicle experiment. The sEMG signals and vibration acceleration signals of the subjects were recorded. And the time-frequency
Qingyang, Huang, Mengyu, Gao, Mingyang, Guo, Yuning, Wei, Jingyuan, Zhang, Xiaoping, Jin   +5 more
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Vibrations: Their Signal Function for a Spider Kleptoparasite

Science, 1979
The stealing behavior of Argyrodes elevatus suggests that this kleptoparasitic spider monitors the movements and the hunting success of its web-building host. Wrapping of prey by the host regularly elicits raids from the kleptoparasite.
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Signal analysis for rotating machinery vibrations

Pattern Recognition, 1975
Abstract A novel method is proposed for the purpose of characterizing repetitive vibration signals. This consists in decomposing the signal into periodic—not necessarily harmonic—components. Two parameters are then sufficient for the description of each component. The appropriate signal processing technique is based on time domain averaging.
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Good Vibrations. Focus on “Texture Signals in Whisker Vibrations”

Journal of Neurophysiology, 2006
Roughly 20 years ago Valentino Braitenberg published a book on vehicles—a treatment of the amazingly complex behavior of a variety of very simple machines ([Braitenberg 1984][1]). This approach was inspired by the “law of uphill analysis and downhill invention.” Accordingly it is easier ...
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Vibrator Harmonics - Noise or Signal?

Proceedings, 2015
Seismic vibrators generate the desired (fundamental) signal and its harmonics. After standard correlation processing using the pilot sweep, harmonics appear as a form of coherent noise preceding each seismic waveform. The harmonics might alternatively be treated as supplementary signal energy by replacing the correlation with source-signature ...
H. Akhondi-Asl, P.L. Vermeer
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Signal added vibration transducer

The Journal of the Acoustical Society of America, 1990
A transducer for measuring vibrations is formed of a case with a vibratory element mounted therein by means of a disk spring which is constrained to vibrate with the vibratory element in a single direction. Optical or magnetic sensors are located in registration with opposed ends of the vibratory element to produce optically or magnetically induced ...
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Analysis of acoustic and vibration signals

1991
In previous chapters we have seen how sound waves propagate as small pressure disturbances in a gas or liquid, or as changes in stress in a solid. Before we can study sound waves we need to be able to measure them. This is achieved by using a sensor (such as a microphone) which converts the pressure or stress change to an electrical form.
J. D. Turner, A. J. Pretlove
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