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| 变精度粗糙集在齿轮故障诊断中的应用 | |
| 引用本文： | 沈仁发,郑海起,金海薇.变精度粗糙集在齿轮故障诊断中的应用[J].振动．测试与诊断,2011,31(3). |
| 作者姓名： | 沈仁发 郑海起 金海薇 |
| 作者单位： | 1. 军械工程学院火炮工程系,石家庄,050003 2. 装备指挥技术学院重点实验室,北京,101416 3. 武汉军械士官学校枪炮系,武汉,430075 |
| 摘 要： | 在二级齿轮箱的变负载过程中,为了有效地处理非平稳信号,采用小波包提取特征参量(条件属性值);为了有效地处理带噪声的数据,将变精度粗糙集理论引入到齿轮的故障诊断中,提出了一种条件属性约简方法.首先对连续属性进行离散化;然后定义集合M,根据实际情况,选取不同的正确分类率β,利用变精度粗糙集的近似分类质量进行条件属性约简,并与加入噪声数据后所得的约简结果进行了对比;最后通过齿轮故障实例验证了此方法的有效性和实用性. |
| 关 键 词： | 二级齿轮箱 变负载 变精度粗糙集理论 条件属性约简 噪声数据 齿轮 |
Fault Diagnosis of Bearing Based on Order-Wavelet Packet and Rough Sets |
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| Shen Renfa,Zheng Haiqi,Jin Haiwei,Kang Haiying,Dong Ziwei.Fault Diagnosis of Bearing Based on Order-Wavelet Packet and Rough Sets[J].Journal of Vibration,Measurement & Diagnosis,2011,31(3). | |
| Authors: | Shen Renfa Zheng Haiqi Jin Haiwei Kang Haiying Dong Ziwei |
| Affiliation: | Shen Renfa1,Zheng Haiqi1,Jin Haiwei2,Kang Haiying1,Dong Ziwei3 (1Department of Guns Engineering,Ordnance Engineering College Shijiazhuang,050003,China) (2 The Key Laboratory of the Academy of Equipment Command &Technology Beijing,101416,China) (3 Department of Gunnery,Wuhan Ordance Noncommissioned Officers Academy Wuhan,430075,China) |
| Abstract: | In the load change test,the vibration signals are measured on a two-level gearbox testbed.For coping with non-stationary signals effective,wavelet packet is used for obtaining a feature vector(values of condition attribute).For coping with noise data effective,variable precision rough set(VPRS) theory is introduced in the fault diagnosis of the gear,and a kind method of condition attribute reduction is presented.Firstly,continuous attributes are discretized. Then,the set of M is defined,and varying values o... |
| Keywords: | two-level gearbox load change variable precision rough set theory condition attribute reduction noise data gear |
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