| 基于局域波-粗糙集-神经网络的故障诊断方法研究 |
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| 引用本文： | 王奉涛,马孝江,张勇. 基于局域波-粗糙集-神经网络的故障诊断方法研究[J]. 内燃机工程, 2007, 28(2): 80-84 |
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| 作者姓名： | 王奉涛 马孝江 张勇 |
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| 作者单位： | 大连理工大学,精密与特种加工教育部重点实验室,大连,116023;沈阳鼓风机(集团)有限公司研发部;大连理工大学,精密与特种加工教育部重点实验室,大连,116023;沈阳鼓风机(集团)有限公司研发部 |
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| 摘 要： | 提出了一种基于局域波-粗糙集-神经网络的智能故障诊断方法。首先通过局域波法进行故障特征提取,获取能够反映设备运行状态的由局部能量组成的特征向量;接着应用粗糙集理论对样本特征参数进行属性约简,去除冗余信息,获取最优的决策系统;最后根据最优决策系统来构造RBF神经网络,并进行故障诊断。以柴油机缸套活塞磨损故障为例,详细说明了基于粗糙集-局域波-神经网络的故障诊断方法的原理和步骤。诊断结果证明了此方法的有效性。
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| 关 键 词： | 内燃机 故障诊断 局域波法 粗糙集 神经网络 |
| 文章编号： | 1000-0925（2007）02-080-05 |
| 修稿时间： | 2006-03-23 |
Research on Fault Diagnosis Method Based on Local Wave Method-Rough Sets Theory-NN |
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| WANH Feng-tao,MA Xiao-jiang,ZHANH Yong. Research on Fault Diagnosis Method Based on Local Wave Method-Rough Sets Theory-NN[J]. Chinese Internal Combustion Engine Engineering, 2007, 28(2): 80-84 |
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| Authors: | WANH Feng-tao MA Xiao-jiang ZHANH Yong |
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| Abstract: | A new fault diagnosis system model based on local wave method-rough sets theory-NN was presented. The diagnosis model firstly made feature extraction with local wave method,and then attributed reduction and value reduction using rough sets theory and obtained the optimum decision system, and finally according to the optimum decision system constructed RBF neural network. The proposed method was tested on diesel engine piston-liner wear estimation. The results show that the developed approach is effective. |
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| Keywords: | IC engine fault diagnosis local-wave method rough set theory neural network |
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