论文部分内容阅读
本文是作者进行１９０系列柴油机振声诊断系列研究的归纳和综述，全文分为动态征兆分析与提纯（Ⅰ）与多参数特征差别与决策（Ⅱ）两部分。第一部分中，作者在对源于激励及振动传播路径的机械故障深入分析的基础上，对同态数字滤波、梳状滤波及保相选带数字滤波等分析方法的适用范围进行了分析和讨论，对大、中型柴油机诊断中振声等动态征兆提纯方法进行了归纳和探讨。为构造柴油机综合动态诊断系统框架及进行多参数特征差别与决策方法的研究奠定了基础
This article is a summary and summary of the series of 190 series diesel vibroacoustic diagnosis. The full text is divided into two parts: dynamic sign analysis and purification (Ⅰ) and multi-parameter feature difference and decision (Ⅱ). In the first part, based on an in-depth analysis of the mechanical faults originating from the excitation and vibration propagation paths, the author analyzes and discusses the applicability of analytical methods such as homomorphic digital filtering, comb filtering and digital filtering with phase selection , On large and medium-sized diesel diagnostic vibration and other dynamic signs of vacuum purification methods were summarized and discussed. It laid the foundation for the research of the framework of the integrated dynamic diagnosis system of diesel engine and the research on the multi-parameter feature difference and decision-making method