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Engine Monitoring Using Vibration Signals
SAE Technical Paper Series, 1986<div class="htmlview paragraph">The operation of a 350 horsepower diesel truck engine was monitored during laboratory tests using the vibration of the block to detect faults in the cylinder pressure and bearings. Simulated faults were introduced into the engine to determine the sensitivity of the vibration measurement location to a particular ...
R. G. DeJong +2 more
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Vibration comfort assessment of tractor drivers based on sEMG and vibration signals
Computer Methods in Biomechanics and Biomedical Engineering, 2023In 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 +5 more
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Vibrator Harmonics - Noise or Signal?
Proceedings, 2015Seismic 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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Some alternate vibrator signals
GEOPHYSICS, 1979The linear swept‐frequency sine wave has been the only seismic vibrator drive signal seriously used in almost two decades of operational vibrator activity. However, there are other drive signals and alterations of this commonly accepted signal which offer improved peak‐to‐side lobe ratios on signal autocorrelations, as well as significant savings in ...
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Signal added vibration transducer
The Journal of the Acoustical Society of America, 1990A 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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Good Vibrations. Focus on “Texture Signals in Whisker Vibrations”
Journal of Neurophysiology, 2006Roughly 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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Vibrating reed selective signaling system
Electrical Engineering, 1949IN MANY mobile radio systems now in service, the car is provided with a loud-speaker which is in operation at all times, the desired car being called by voice. Such an arrangement has the disadvantage that the occupants of all the telephone-equipped cars hear all conversations on their channel.
Harold M. Pruden, Daniel F. Hoth
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Vibration Signal Transmission in Spider Orb Webs
Science, 1981Vibration transmission from the prey-catching region to the hub of the unloaded orb web of Nuctenea sclopetaria was measured by laser vibrometry. Compared to transverse or lateral vibrations, longitudinal vibration shows less attenuation and contains more directional information.
W M, Masters, H, Markl
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Auditory display of knee-joint vibration signals
The Journal of the Acoustical Society of America, 2001Sounds generated due to rubbing of knee-joint surfaces may lead to a potential tool for noninvasive assessment of articular cartilage degeneration. In the work reported in the present paper, an attempt is made to perform computer-assisted auscultation of knee joints by auditory display (AD) of vibration signals (also known as vibroarthrographic or VAG ...
S, Krishnan +3 more
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Identifying Rogating Blades Vibration From the Shaft Torsional Vibration Signals
Aging Management and Component Analysis, 2003This paper presents results from an experimental study on the identification of rotating blades vibration from the shaft torsional vibration signals. Test rigs that contain 12 blades bladed disk with shaft equipped with lateral and torsional vibration measurement is designed and manufactured.
B. O. Al-Bedoor +3 more
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