Title :
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
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;
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
DOI :
10.1109/ICICTA.2010.271
