氢发动机异常燃烧的诊断研究

通过对氢发动机异常燃烧现象的研究,指出压力信号包含了丰富的燃烧信息,提出应用小波变换法提取异常燃烧信息,对氢发动机正常燃烧和异常燃烧压力信号进行了小波包分解,提取出小波包能量。通过构造小波包能量特征向量,对氢发动机异常燃烧进行了有效诊断,为工程中实际应用提供了理论基础。

Researching On Abnormal Combustion Diagnoses of Hydrogen-Fueled Engine

Based on the research of the abnormal Combustion of Hydrogen-Fueled Engine, pressure signals contain abundant information that can be extracted by wavelet transform. The pressure signals of normal and abnormal combustion were decomposed by wavelet packet and the wavelet packet energy was extracted. By constructing the eigenvector of wavelet packet energy,the abnormal combustion of hydrogen-fueled engine was diagnosed effectively.It was an theory basis to engineering application.