Shock Response Spectrum of a Diesel Engine

Author

Gao Hongbin ; Zhu Shijian ; Ouyang Guangyao ; Xie Xiangrong

Author_Institution

Coll. of Naval Archit. & Power, Naval Univ. of Eng., Wuhan, China

Volume

3

fYear

2010

fDate

11-12 May 2010

Firstpage

285

Lastpage

288

Abstract

Shock test method is important to shock resistant study of diesel engine. A diesel power generating set with vibration isolator and retainer is subjected to shock loading under operational condition. Acceleration of diesel engine bracket is measured using ICP accelerometer. Measured signal is complex, which is composed of operation vibration, base shock response and undesirable noise. Measured signal is analyzed using wavelet analysis. Shock response is separated from it using wavelet reconstruction method and wavelet soft threshold de-noising method. Shock response is composed of low frequency vibration of isolator, middle frequency vibration caused by retainer impacting. Shock spectrum of acceleration of diesel engine bracket is calculated based on de-noised signal and Shock input environment of diesel engine is obtained.

Keywords

accelerometers; diesel engines; impact testing; shock waves; signal denoising; signal reconstruction; vibration isolation; wavelet transforms; ICP accelerometer; diesel engine; shock resistance; shock response spectrum; shock test method; vibration isolator; vibration retainer; wavelet analysis; wavelet reconstruction method; wavelet soft threshold denoising method; Acceleration; Accelerometers; Diesel engines; Electric shock; Frequency; Isolators; Power generation; Signal analysis; Testing; Vibration measurement; Acceleration; Diesel Engine; Shock; Shock Spectrum; Wavelet;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Computation Technology and Automation (ICICTA), 2010 International Conference on

Conference_Location

Changsha

Print_ISBN

978-1-4244-7279-6

Electronic_ISBN

978-1-4244-7280-2

Type

conf

DOI

10.1109/ICICTA.2010.271

Filename

5523513