A combination algorithm for diesel engine vibration signal blind separation
HAN Chun-yang1，YAO Guo-feng1，ZHAO Jian2，ZHANG Xiu-lu1，SHENG Xin1
1.Jilin University, College of Mechanical Science and Engineering, Department of Engineering Mechanics，Changchun, 130022 China;2.State Key Laboratory of Comprehensive Technology on Automobile Vibration and Noise & Safety Control，Changchun, 130011 China
The mechanical system vibration signals effectively reflect the characteristics of the system, its blind deconvolution can provide the possibility of separation of source signals from the mixed signals. Firstly,this paper proposes the convolution model of the mechanical system vibration; Secondly, this paper combines the Multi-Channel Blind Least Mean Squares with the Deflation Source .it is called as the MBLMS-TDS algorithm. For verifing the reasonableness of the algorithm, it is applied in the blind deconvolution of simulation mixed sources.Finally, This paper extracts the diesel engine piston-slap signal and combustion signal from the mixed vibration signal on the surface of the diesel engine piston by the MBLMS-TDS algorithm.
2014, Vol. 33 
