盲提取方法在柴油机活塞-缸套撞击信号提取中的应用

讨论了盲反卷积在机械振动信号处理中的应用以及盲反卷积中常用的模型和方法,利用信号和高斯信号之间的Kullback-Leibler距离构建目标函数,提出了一种以伪并行遗传算法为优化工具的盲反卷积算法,并通过仿真验证了算法的正确性.实验也证明,该算法能成功地从柴油机机体振动信号中提取出活塞-缸套撞击信号.

Extracting piston-slap using blind-deconvolution based on pseudo parallel genetic algorithm

This paper dealt with blind de-convolution of piston slap in internal combustion engine.The model of blind de-convolution and the application in machine field were discussed,and the approach to blind de-convolution based pseudo parallel genetic algorithm was realized by maximizing the Kullback-Leibert divergence between the distribution of a recovered signal and its corresponding Gaussian distribution of the same mean and variance.In the end,the test result proves that the algorithm is feasible.