Event-triggered Varying Speed Limit Control of Stop-and-go Traffic
Sign Up to like & getrecommendations! Published in 2020 at "IFAC-PapersOnLine"
DOI: 10.1016/j.ifacol.2020.12.1343
Abstract: Abstract This paper develops event-triggered boundary control strategies for varying speed limit (VSL) located at a freeway segment. The stop-and-go traffic oscillations are suppressed by regulating the velocity of vehicles that leave the segment. The… read more here.
Keywords: control; event triggered; varying speed; event ... See more keywords
Fault diagnosis for rolling bearings under unknown time-varying speed conditions with sparse representation
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2020.115854
Abstract: Abstract In practice, bearings often run at a time-varying speed, which induces non-stationary vibration signals. How to extract the fault characteristic frequency (FCF) effectively under unknown variable speed conditions is a challenging work. This paper… read more here.
Keywords: time varying; varying speed; speed conditions; time ... See more keywords
Bearing failure diagnosis at time-varying speed based on adaptive clustered fractional Gabor transform
Sign Up to like & getrecommendations! Published in 2023 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/acd5f3
Abstract: For bearing fault diagnosis at time-varying speed with tachometer-free and non-resampling, the crucial process is to obtain a high-resolution time-frequency representation and extract fault features. However, current multi-component non-stationary signal feature extraction methods based on… read more here.
Keywords: time; diagnosis; varying speed; fault ... See more keywords
Normal DGP in varying speed of light cosmology
Sign Up to like & getrecommendations! Published in 2017 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/17/3/26
Abstract: Varying speed of light (VSL) has been used in cosmological models in which the physical constants vary over time. On the other hand, the Dvali, Gabadadze and Porrati (DGP) brane world model, especially its normal… read more here.
Keywords: cosmology; varying speed; speed light; normal dgp ... See more keywords
Constraining minimally extended varying speed of light by cosmological chronometers
Sign Up to like & getrecommendations! Published in 2023 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1190
Abstract: At least one dimensionless physical constant (i.e., a physically observable) must change for the cosmic time to make the varying speed of light (VSL) models phenomenologically feasible. Various physical constants and quantities also should be… read more here.
Keywords: speed light; mevsl; extended varying; varying speed ... See more keywords
Toothwise Health Monitoring of Planetary Gearbox Under Time-Varying Speed Condition Based on Rotating Encoder Signal
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2021.3090713
Abstract: To meet industrial demand, plenty of research works have been dedicated to monitoring the health status of planetary gearboxes. For the same purpose, a new path is explored based on rotating encoder signal (RES) by… read more here.
Keywords: based rotating; time varying; varying speed; rotating encoder ... See more keywords
Novel Time–Frequency Mode Decomposition and Information Fusion for Bearing Fault Diagnosis Under Varying-Speed Condition
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2023.3260275
Abstract: Rolling bearing fault diagnosis is significant in rotating machinery daily maintenance. However, it is still difficult to diagnose the weak fault of rolling bearing under variable speed in some cases. In this article, a bearing… read more here.
Keywords: fault diagnosis; varying speed; bearing fault; fault ... See more keywords
PeriodNet: Noise-Robust Fault Diagnosis Method Under Varying Speed Conditions.
Sign Up to like & getrecommendations! Published in 2023 at "IEEE transactions on neural networks and learning systems"
DOI: 10.1109/tnnls.2023.3274290
Abstract: Rolling bearings are critical components in modern mechanical systems and have been extensively equipped in various rotating machinery. However, their operating conditions are becoming increasingly complex due to diverse working requirements, dramatically increasing their failure… read more here.
Keywords: speed conditions; fault diagnosis; varying speed;
Incipient Fault Detection for Rolling Element Bearings under Varying Speed Conditions
Sign Up to like & getrecommendations! Published in 2017 at "Materials"
DOI: 10.3390/ma10060675
Abstract: Varying speed conditions bring a huge challenge to incipient fault detection of rolling element bearings because both the change of speed and faults could lead to the amplitude fluctuation of vibration signals. Effective detection methods… read more here.
Keywords: detection; varying speed; speed conditions; speed ... See more keywords