Research on bispectrum analysis of secondary feature for vehicle exterior noise based on nonnegative tucker3 decomposition

Deng, Guoyong; Qing-lin, LI; Kang, Qiang

doi:10.17531/ein.2016.2.18

Cited by 2 publications

(4 citation statements)

References 27 publications

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“…where the symbol † at the upper right corner returns a Moore-Penrose value within the round bracket, [·] + denotes the nonnegative constraint on the matrix in the square bracket, which is used to improve the sparseness of the factors for the features (Wang et al, 2016). Actually, with ALS method between G k and {A (Patterson, Gillette, 1977).…”

Section: Algorithmic Simplification For Tucker3 Decompositionmentioning

confidence: 99%

“…Thus, the input in different directions lowers the possibility of the vibrationnoise resonance . What is more, the light and soft alloy helps to lower the stiffness of the heat shield, which cuts down the sharpness of the noise for sound quality (Wang et al, 2016). The SPL of the vehicle pass-by noise as the evaluating value is recorded in Table 3.…”

Section: Improved Heat Shieldmentioning

confidence: 99%

“…To objectively evaluate the SPL, vehicle pass-by noise both at the 2-nd gear (2G) and the 3-rd gear (3G) is measured by WOT. Then the SPL is checked with A-weighting way whether the noise meets the regulation, which is also used to evaluate the NVH (Noise, Vibration and Harshness) level of an automobile (Nilsson, 2007, cited by Wang et al, 2016). Mostly, vibration resonance, noise radiation, or both statuses may occur when the vibration and noise interfere with each other, especially with two or more near natural frequencies, for example, the possibility between the heat shield and the exhaust pipe (Davies, Harrison, 1997).…”

Section: Introductionmentioning

confidence: 99%

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A Fast Method of Feature Extraction for Lowering Vehicle Pass-By Noise Based on Nonnegative Tucker3 Decomposition

Wang

Guo

Deng

et al. 2017

Archives of Acoustics

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Usually, the judgement of one type fault of vehicle pass-by noise is difficult for engineers, especially when some significant features are disturbed by other interference noise, such as the squealing noise is almost simultaneous with the whistle in the exhaust system. In order to cope with this problem, a new method, with the antinoise ability of the algorithm on the condition by which the features are entangled, is developed to extract clear features for the fault analysis. In the proposed method, the nonnegative Tucker3 decomposition (NTD) with fast updating algorithm, signed as NTD FUP, can find out the natural frequency of the parts/components from the exhaust system. Not only does the NTD FUP extract clear features from the confused noise, but also it is superior to the traditional methods in practice. Then, an aluminium-foil alloy material, which is used for the heat shield for its lower noise radiation, replaces the aluminium alloy alone. Extensive experiments show that the sound pressure level of the vehicle pass-by noise is reduced 0.9 dB(A) by the improved heat shield, which is also considered as a more lightweight design for the exhaust system of an automobile.

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Section: Algorithmic Simplification For Tucker3 Decompositionmentioning

confidence: 99%

Section: Improved Heat Shieldmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Fast Method of Feature Extraction for Lowering Vehicle Pass-By Noise Based on Nonnegative Tucker3 Decomposition

Wang

Guo

Deng

et al. 2017

Archives of Acoustics

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“…At present, the study of High-order cumulants has been very popular in mechanical fault diagnosis. For instance, Shao Ren-ping and others have applied bispectrum to gear damage detection [1] [2] [3], and Huang Yijian and others have applied trispectrum to fault diagnosis of speed regulating valve [4] [5], which has obtained better effects.…”

Section: Introductionmentioning

confidence: 99%

The Application of Coupled Three Order Cumulants’ Differential Feature in Fault Diagnosis

Wu¹,

Xiong²,

Wu³

et al. 2018

IJMNTA

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Complex three-order cumulant has different definition forms. Different forms conclude different information. For studying the effection of frequency in the coupled signals to fault diagnosis, the differential method to the three order cumulants of coupled signals is adopted. By using the differential of complex three order cumulants before and after respectively, then their 1 1 2 dimensional spectrum is calculated, and the results are used to fault diagnosis. The experimental results show that, the increase frequency item in three order cumulants after differentiated impacts on the results of fault diagnosis and the degree of effection is relative to the differential times. And the correct rate of fault diagnosis can be raised by changing the differential times of three order cumulants.

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Research on bispectrum analysis of secondary feature for vehicle exterior noise based on nonnegative tucker3 decomposition

Cited by 2 publications

References 27 publications

A Fast Method of Feature Extraction for Lowering Vehicle Pass-By Noise Based on Nonnegative Tucker3 Decomposition

A Fast Method of Feature Extraction for Lowering Vehicle Pass-By Noise Based on Nonnegative Tucker3 Decomposition

The Application of Coupled Three Order Cumulants’ Differential Feature in Fault Diagnosis

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