Multifractal Nature of Diesel Engine Rattle Noise in Vehicle
The investigation results of the emission of noises accompanying the diesel engine powertrain running in unloaded condition at low or idle speed, are presented in the hereby paper. The multifractal nature of the tested signals was confirmed by means of two groups of parameters. The proposed local pa...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Institute of Fundamental Technological Research Polish Academy of Sciences
2017-07-01
|
| Series: | Archives of Acoustics |
| Subjects: | |
| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/2030 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849414127987982336 |
|---|---|
| author | Andrzej PUCHALSKI Iwona KOMORSKA |
| author_facet | Andrzej PUCHALSKI Iwona KOMORSKA |
| author_sort | Andrzej PUCHALSKI |
| collection | DOAJ |
| description | The investigation results of the emission of noises accompanying the diesel engine powertrain running in unloaded condition at low or idle speed, are presented in the hereby paper. The multifractal nature of the tested signals was confirmed by means of two groups of parameters. The proposed local parameters are based on the distribution of the probability density of measures, segregated into subsets according to pointwise Holder exponents. The obtained spectra constitute a set of multifractal measures related to singularities representing the local scaling of measures in various points of the time series. Global parameters were defined on the basis of multifractal measures of the parametrised Renyi’s entropy. These are properties treating summarily the whole spectrum of the emitted noise and reflecting changes of the vibroacoustic energy levels generated by noise sources. The tests encompassing simultaneous application of both groups of parameters confirmed their efficiency in the comparative analysis as well as in the subjective assessment of the noise level generated in the drive system of vehicles with diesel engines. This opens new possibilities within the simulation range of vehicle noises, for the needs of constructing the passive and active reduction systems of the effects of the vibroacoustic energy propagation. |
| format | Article |
| id | doaj-art-85ba6606141e40ccaf3062b2bb386154 |
| institution | Kabale University |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2017-07-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-85ba6606141e40ccaf3062b2bb3861542025-08-20T03:33:56ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2017-07-0142310.1515/aoa-2017-0049Multifractal Nature of Diesel Engine Rattle Noise in VehicleAndrzej PUCHALSKI0Iwona KOMORSKA1University of Technology and Humanities in RadomUniversity of Technology and Humanities in RadomThe investigation results of the emission of noises accompanying the diesel engine powertrain running in unloaded condition at low or idle speed, are presented in the hereby paper. The multifractal nature of the tested signals was confirmed by means of two groups of parameters. The proposed local parameters are based on the distribution of the probability density of measures, segregated into subsets according to pointwise Holder exponents. The obtained spectra constitute a set of multifractal measures related to singularities representing the local scaling of measures in various points of the time series. Global parameters were defined on the basis of multifractal measures of the parametrised Renyi’s entropy. These are properties treating summarily the whole spectrum of the emitted noise and reflecting changes of the vibroacoustic energy levels generated by noise sources. The tests encompassing simultaneous application of both groups of parameters confirmed their efficiency in the comparative analysis as well as in the subjective assessment of the noise level generated in the drive system of vehicles with diesel engines. This opens new possibilities within the simulation range of vehicle noises, for the needs of constructing the passive and active reduction systems of the effects of the vibroacoustic energy propagation.https://acoustics.ippt.pan.pl/index.php/aa/article/view/2030mechanical noise and vibrationmultifractal formalismalpha-stable distributions |
| spellingShingle | Andrzej PUCHALSKI Iwona KOMORSKA Multifractal Nature of Diesel Engine Rattle Noise in Vehicle Archives of Acoustics mechanical noise and vibration multifractal formalism alpha-stable distributions |
| title | Multifractal Nature of Diesel Engine Rattle Noise in Vehicle |
| title_full | Multifractal Nature of Diesel Engine Rattle Noise in Vehicle |
| title_fullStr | Multifractal Nature of Diesel Engine Rattle Noise in Vehicle |
| title_full_unstemmed | Multifractal Nature of Diesel Engine Rattle Noise in Vehicle |
| title_short | Multifractal Nature of Diesel Engine Rattle Noise in Vehicle |
| title_sort | multifractal nature of diesel engine rattle noise in vehicle |
| topic | mechanical noise and vibration multifractal formalism alpha-stable distributions |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/2030 |
| work_keys_str_mv | AT andrzejpuchalski multifractalnatureofdieselenginerattlenoiseinvehicle AT iwonakomorska multifractalnatureofdieselenginerattlenoiseinvehicle |