| 关联维数在汽轮机故障诊断中的应用 |
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| 引用本文： | 张燕平,黄树红,高伟,王坤.关联维数在汽轮机故障诊断中的应用[J].华中科技大学学报(自然科学版),2007,35(7):93-95. |
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| 作者姓名： | 张燕平 黄树红 高伟 王坤 |
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| 作者单位： | 华中科技大学,能源与动力工程学院,湖北,武汉,430074 |
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| 摘 要： | 在汽轮机轴系典型故障模拟试验的基础上,对故障信号的关联维数进行了计算研究.采用G-P算法分别计算了故障信号的时域波形及小波高频重构波形的关联维数,采用自相关函数法确定延迟时间.计算结果表明,对原始信号进行高频重构后再计算关联维数,可以达到突出故障信息,增大关联维数对故障的区分度的目的,此关联维数可以作为汽轮机故障诊断的定量指标.
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| 关 键 词： | 汽轮机 故障诊断 关联维数 关联维数 汽轮机故障诊断 应用 systems shaft steam turbine faults vibration fractal dimension 定量指标 区分度 故障信息 原始信号 结果 延迟时间 相关函数法 时域波形 高频重构 小波 计算研究 |
| 文章编号： | 1671-4512（2007）07-0093-03 |
| 修稿时间： | 2006-07-24 |
Application of correlative fractal dimension to the vibration faults in steam turbine shaft systems |
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| Zhang Yanping,Huang Shuhong,Gao Wei,Wang Kun.Application of correlative fractal dimension to the vibration faults in steam turbine shaft systems[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2007,35(7):93-95. |
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| Authors: | Zhang Yanping Huang Shuhong Gao Wei Wang Kun |
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| Institution: | College of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | Time-serials waveforms of the faulty signals and the correlative fractal dimension of reconstructed high frequencies wavelets were calculated by G-P arithmetic and their delay-times were evaluted by self-correlation function, after typical faulty signals from the rotor test rigs are simulated. The analysis shows that correlative dimension can be used as a quantitative index for fault diagnosis. Compared with correlative fractal dimension calculated from the time-serials of faulty signal directly, the correlative dimension calculated from the high frequency reconstruction signal has better identification ability than that from time-serials. |
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| Keywords: | steam turbine generator fault diagnosis correlative fractal dimension |
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