基于曲轴回转振动信号的多缸内燃机诊断研究  

Reserach on Multi-Cylindered Engine Diagnosis Based on Crankshaft Torsional Vibration Signals

作　　者：樊可清[1] 王玲[2] 

机构地区：[1]西安交通大学机械诊断与控制学研究所,西安710049 [2]河北经贸大学计算机系,石家庄050061

出　　处：《振动．测试与诊断》1998年第2期115-119,共5页Journal of Vibration,Measurement & Diagnosis

摘　　要：对机车柴油机的实测结果表明它与缸数少的内燃机有很大差别，本文针对多缸内燃机的特点提出了故障特征矢量的提取方法和基于子空间法模式识别的回转振动信号故障诊断方法。The researches on engine diagnosis based on crankshaft torsional vibration signals have been reported. As a practical and convenient method of torsional vibration measurement is developed,the diagnosis becomes more practical. Unfortunately current results are all from the study of the engines with few cylindcrs. The results of this study on a 16-cylinder diesel engine 16V240 show that it is quite different from those with few cylinders. In accordance with the featurc of the engine studied in this work,a method of extracting fault characteristic vector and of the fault diagnosis based on subspace pattern recognition by using torsional vi bration signals is proposed. Additionally,the principal of a new method of torsional vibration measurement is presented in the paper.

关 键 词：机械故障诊断 回转振动测试 内燃机 曲轴 

分 类 号：TK407[动力工程及工程热物理—动力机械及工程]