| 基于熵的Mass函数算法及在液压泵故障诊断中的应用 |
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| 引用本文： | 江四厚,王汉功,阳能军. 基于熵的Mass函数算法及在液压泵故障诊断中的应用[J]. 机床与液压, 2007, 35(12): 185-187 |
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| 作者姓名： | 江四厚 王汉功 阳能军 |
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| 作者单位： | 第二炮兵工程学院,陕西西安,710025;第二炮兵工程学院,陕西西安,710025;第二炮兵工程学院,陕西西安,710025 |
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| 摘 要： | 如何确定Mass函数是D-S证据理论的棘手问题,本文从信息论的观点出发,提出一种新的计算Mass函数的算法.该算法依据证据体可信度因素和证据体与目标关联的相对熵来分配证据体的Mass函数,较全面反映证据体的不确定性.将方法应用于液压泵诊断中,结果表明它获取的Mass函数是符合实际情况的,具有较好的实用性,而且其算法容易实现.
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| 关 键 词： | 液压泵 D-S证据理论 Mass函数 信息熵 故障诊断 |
| 文章编号： | 1001-3881（2007）12-185-3 |
| 收稿时间： | 2006-09-08 |
| 修稿时间： | 2006-09-08 |
The Algorithm of Mass Function Based Entropy and its Application in Fault Diagnosis of Hydraulic Pumps |
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| JIANG Sihou,WANG Hangong,YANG Nengjun. The Algorithm of Mass Function Based Entropy and its Application in Fault Diagnosis of Hydraulic Pumps[J]. Machine Tool & Hydraulics, 2007, 35(12): 185-187 |
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| Authors: | JIANG Sihou WANG Hangong YANG Nengjun |
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| Abstract: | How to assign the Mass function is a puzzle in the D-S evidence theory. From the perspective of information, a new algorithm for assigning Mass function was proposed. This method determines the uncertainty of the bodies of evidence, which combines the reliability of the bodies of evidence and the entropy of associated coefficient between the evidences and the targets~ It also generally reflects the total uncertainty of the evidences. Examples in fault diagnosis of hydraulic pumps show that this method adapts to circumstance, possesses better practicability and it is easy to realize. |
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| Keywords: | Hydraulic pumps D-S evidence theory Mass function Entropy Fault diagnosis |
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