中文摘要：

采用独立分量分析的方法进行了柴油机缸盖振动信号分离的研究.建立了基于Fixed-pointICA算法的4135船用柴油机缸盖振动信号分析模型,分析了这些振动信号的性质.针对实际应用,对采集到的2路混合信号进行分离,得到了各独立分量的时域和频域分布.分离结果表明独立分量分析是一种行之有效的信号处理的新方法.

英文摘要：

Independent Component Analysis （ICA） was carried out to decompose engine vibration signals. Based on Fixed-point ICA algorithm, the conventional model for the vibrate signal of marine diesel engine was set up, analyses the property of vibration Signal. In view of the practical application, 2 route linear mixed sig- nals are carried on the separation, each independent component time domain and frequency range distribution is obtained. The result shows that ICA is an effective way to pretreatment of signal.