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| 基于EMD与SVM的柴油机故障诊断 | |
| 引用本文： | 陆金铭,王醇涛,马捷. 基于EMD与SVM的柴油机故障诊断[J]. 内燃机, 2009, 0(3) |
| 作者姓名： | 陆金铭 王醇涛 马捷 |
| 作者单位： | 1. 上海交通大学,船舶与海洋工程学院,上海,20030;江苏科技大学,机械与动力工程学院,江苏,镇江,212003 2. 江苏科技大学,机械与动力工程学院,江苏,镇江,212003 3. 上海交通大学,船舶与海洋工程学院,上海,20030 |
| 摘 要： | 对柴油机气阀间隙变化、断油等故障情况下的缸盖振动信号进行了测试分析.采用经验模式分解EMD方法对振动信号进行分解,得到固有模态函数IMF,对每一个IMF分量分别建立AR模型,以模型的自回归参数和残差的方差作为特征向量,用支持向量机SVM进行分类,判断柴油机的工作状态和故障类型.实验结果分析表明,该方法即使在小样本情况下也能准确有效地诊断柴油机故障,能实现故障的实时自动化诊断. |
| 关 键 词： | 柴油机 故障诊断 经验模式分解EMD AR模型 支持向量机SVM |
Fault Diagnosis of Diesel Engine Based on EMD and SVM |
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| LU Jin-ming,WANG Chun-tao,MA Jie. Fault Diagnosis of Diesel Engine Based on EMD and SVM[J]. Internal Combustion Engines, 2009, 0(3) | |
| Authors: | LU Jin-ming WANG Chun-tao MA Jie |
| Affiliation: | 1. School ofNaval Architecture and Civil Eng.;Shanghai JiaotongUniversity;Shanghai 200030;China;2. School of Mechanical and Power Eng.;Jiangsu University of Science and Technology;Zhenjiang 212003;China |
| Abstract: | Surface vibration signals of a diesel cylinder head have been obtained under the fault conditions in this paper, such as abnormal gas valve clearance, oil break and gas leakage, etc. The EMD method is used to decompose the vibration signal into a number of intrinsic mode function components and then the AR model of each IMF component is established. The auto-regressive parameters and the variance of remnant are regarded as the feature vectors and served as input parameters of SVM classifier to classify work... |
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| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |