Transversal vibration analysis of an axially moving string with unilateral constraints using the HHT method

Xia, Chunlin; Wu, Yicheng; Lu, Qianqian

doi:10.1016/j.ymssp.2013.01.018

Cited by 10 publications

(9 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even though it requires more computation time, EEMD, in which finite-amplitude white noises are added to the series to be processed and ensemble means as decomposition results, was chosen for this analysis to avoid possible inter-wave modulations and to suppress possible intermittence. 32,33,36 3.…”

Section: Time-frequency Analysismentioning

confidence: 99%

“…The detailed calculation procedures can be found in. 32,33,35,36 Time-frequency features such as HSP, MSP, and energized IMFs and IFs were extracted.…”

Section: Main Component Extractionmentioning

confidence: 99%

“…[29][30][31][32][33][34][35] The authors presented experimental results on the vibration characteristics of axially moving strings. 32,33 The vibrating characteristics of a moving plate were demonstrated by using the Hilbert-Huang transform (HHT) method. 34 To quantitatively express the motion (including pitch and roll) of a moving plate, three capacitive sensors were used and a motion indicator was introduced.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Vibration Analysis of an Axially Moving Plate Based on Sound Time-Frequency Analysis

Lu¹,

Shao²,

Wu³

et al. 2018

IJAV

Self Cite

View full text Add to dashboard Cite

In some types of non-contact measuring systems, vibrating motion has negative effects on accuracy. Therefore, there is a need to analyze and monitor the motion state of a moving part using a low-cost scheme. This study focused on the vibration analysis and monitoring of a poly-crystalline silicon solar wafer carried by a pair of parallel moving strings, separated by a distance. Based on the sound data series picked up by a low-cost microphone and using a time-frequency analysis method, namely, the Hilbert-Huang transform (HHT) method, the low frequency features of the moving wafer could be determined quantitatively. The results showed that the motion of the moving wafer was sensitive to speed and string tension. By comparison, the average marginal spectrum should be treated as the basis for quantitative vibration monitoring, especially for a system with a strict requirement in terms of motion smoothness.

show abstract

Section: Time-frequency Analysismentioning

confidence: 99%

“…The detailed calculation procedures can be found in. 32,33,35,36 Time-frequency features such as HSP, MSP, and energized IMFs and IFs were extracted.…”

Section: Main Component Extractionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Vibration Analysis of an Axially Moving Plate Based on Sound Time-Frequency Analysis

Lu¹,

Shao²,

Wu³

et al. 2018

IJAV

Self Cite

View full text Add to dashboard Cite

show abstract

“…The dynamic vibration behaviour of an EFEAD system includes two major motion behaviours: 2 rotational vibrations of the driven pulleys and the tensioner arms; transverse vibrations of the belt spans. Crankshaft rotational vibration excitation, variable accessory loads and pulley run-outs can induce excessive vibration responses in a poorly designed EFEAD system, leading to loud noise and even belt fatigue damage.…”

Section: Introductionmentioning

confidence: 99%

Modelling of the rotational vibrations of the engine front-end accessory drive system: a generic method

Xiao

Shangguan

Deng

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

To investigate the rotation vibration dynamics of the pulleys and the tension arms, and to estimate the vibrations of the belts and the slip ratio between the belt and the pulleys in the engine front-end accessory drive systems, a systematic modelling and analytical method is proposed for engine front-end accessory drive systems; this can be used for modelling engine front-end accessory drive systems with different layouts and different numbers of tensioners, including automatic and fixed tensioners. In the modelling, the rotational pulleys are classified as fixed-axis pulleys and moveable-axis pulleys (such as the pulley in the tensioner). Moreover, the belt spans are classified as the belt spans between the two fixed pulleys, and the belt spans adjacent to the pulley of a tensioner. The equations of motion for each type of pulley and the tension calculation equations for each type of belt span are developed. In this way, the equations of motion for all the pulleys and the tensioner arms can be obtained easily, irrespective of the layout of the tensioners. To obtain the dynamic rotational vibration responses of an engine front-end accessory drive system by the conventional Runge–Kutta method, high-efficiency algorithms or methods are also proposed for calculating the tangent-point coordinates between a belt and the adjacent pulleys and the belt length of the contact arc on one pulley. The proposed modelling and analysis methods are validated by modelling different layouts of the engine front-end accessory drive systems with different types and numbers of tensioners, and also by comparisons between the calculated dynamic vibration responses of the pulleys and the belts and the real experimental data.

show abstract

“…However, the axially moving belt is prone to vibrations due to the compliance of the material. In addition, a variety of mechanical defects, such as shaft misalignment, pulley eccentricity, belt wear and improper belt tensioning, may give rise to excessive belt vibrations that cause noise radiation, belt fatigue, speed loss and possibly a catastrophic machine failure [1,2]. In order to monitor the dynamic behaviors of the belt and diagnose machinery problems, it is desirable to measure and characterize the belt vibration on an on-line continuous basis.…”

Section: Introductionmentioning

confidence: 99%

On-line continuous measurement of the operating deflection shape of power transmission belts through electrostatic sensing

Yang

Wang

et al. 2016

2016 IEEE International Instrumentation and Measurement Technology Conference Proceedings

View full text Add to dashboard Cite

show abstract

Transversal vibration analysis of an axially moving string with unilateral constraints using the HHT method

Cited by 10 publications

References 26 publications

Vibration Analysis of an Axially Moving Plate Based on Sound Time-Frequency Analysis

Vibration Analysis of an Axially Moving Plate Based on Sound Time-Frequency Analysis

Modelling of the rotational vibrations of the engine front-end accessory drive system: a generic method

On-line continuous measurement of the operating deflection shape of power transmission belts through electrostatic sensing

Contact Info

Product

Resources

About