Inverse analysis method for evaluation of combustion forces

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Explosions of an internal combustion engine create powerful forces which cause the engine structure to vibrate. These vibrations are one of the sources of chassis excitation and interior noise emissions. Current research integrated signal processing with inverse technique to solve an inverse input problem for internal part of machinery. Such problem is consisted of sources that are both unknown and inaccessible. Inverse formulation is implemented to estimate unknown amount of vibration sources. Tikhonov regularization is carried out to stabilize solution of ill-posed problem. L-curve and generalized cross validation (GCV) methods are utilised to obtain the regularization parameter. In comparison with transfer path analysis, inverse technique does not need to separate the observation part from the system. The advantage of this solution over coherence based methods is its applicability in low frequency analysis of engine with missing inputs and outputs. Implementation of L-curve and GCV techniques below and after 600 Hz respectively reduces the error mainly below 20 dB throughout the spectrum in operational condition of a real engine.

Original languageEnglish
Title of host publication17th International Congress on Sound and Vibration 2010, ICSV 2010
Pages1266-1273
Number of pages8
Volume2
Publication statusPublished - 2010
Event17th International Congress on Sound and Vibration 2010, ICSV 2010 - Cairo
Duration: 18 Jul 201022 Jul 2010

Other

Other17th International Congress on Sound and Vibration 2010, ICSV 2010
CityCairo
Period18/7/1022/7/10

Fingerprint

engines
evaluation
chassis
vibration
internal combustion engines
machinery
curves
explosions
signal processing
low frequencies
formulations
causes
output
estimates
excitation

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Fouladi, M. H., Mohd Nor, M. J., Mohd Ihsan, A. K. A., & Abdullah, S. (2010). Inverse analysis method for evaluation of combustion forces. In 17th International Congress on Sound and Vibration 2010, ICSV 2010 (Vol. 2, pp. 1266-1273)

Inverse analysis method for evaluation of combustion forces. / Fouladi, Mohammad Hosseini; Mohd Nor, Mohd. Jailani; Mohd Ihsan, Ahmad Kamal Ariffin; Abdullah, Shahrir.

17th International Congress on Sound and Vibration 2010, ICSV 2010. Vol. 2 2010. p. 1266-1273.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fouladi, MH, Mohd Nor, MJ, Mohd Ihsan, AKA & Abdullah, S 2010, Inverse analysis method for evaluation of combustion forces. in 17th International Congress on Sound and Vibration 2010, ICSV 2010. vol. 2, pp. 1266-1273, 17th International Congress on Sound and Vibration 2010, ICSV 2010, Cairo, 18/7/10.
Fouladi MH, Mohd Nor MJ, Mohd Ihsan AKA, Abdullah S. Inverse analysis method for evaluation of combustion forces. In 17th International Congress on Sound and Vibration 2010, ICSV 2010. Vol. 2. 2010. p. 1266-1273
Fouladi, Mohammad Hosseini ; Mohd Nor, Mohd. Jailani ; Mohd Ihsan, Ahmad Kamal Ariffin ; Abdullah, Shahrir. / Inverse analysis method for evaluation of combustion forces. 17th International Congress on Sound and Vibration 2010, ICSV 2010. Vol. 2 2010. pp. 1266-1273
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