| 水电机组故障诊断专家系统中图形征兆的提取 |
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| 引用本文： | 张双全,韦彩新,邓正鹏.水电机组故障诊断专家系统中图形征兆的提取[J].华中科技大学学报(自然科学版),2003,31(4):51-53. |
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| 作者姓名： | 张双全 韦彩新 邓正鹏 |
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| 作者单位： | 1. 华中科技大学能源与动力工程学院
2. 黄龙滩水电厂 |
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| 基金项目： | 国家自然科学基金资助项目 (5 99790 0 7) |
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| 摘 要： | 将小波包分解及重构技术用于转子轴心轨迹提纯，利用离散余弦变换实现轴心轨迹的自动识别，结合水轮发电机组故障诊断系统，实现了轴心轨迹图形征兆的提取，论证了所述方法的合理性和可行性．利用该方法提高了系统的诊断速度和精度．
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| 关 键 词： | 水电机组 故障诊断专家系统 图形征兆 转子轴心轨迹 信息提取 |
| 文章编号： | 1671-4512(2003)04-0051-03 |
| 修稿时间： | 2002年4月15日 |
The symptom extraction of axis orbit in fault diagnosis of hydropower generating units |
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| Zhang Shuangquan Wei Caixin Deng Zhengpeng Zhang Shuangquan Lect., College of Eoergy & Power Eng.,Huazhong Univ. of Sci. & Tech.,Wuhan ,China..The symptom extraction of axis orbit in fault diagnosis of hydropower generating units[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2003,31(4):51-53. |
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| Authors: | Zhang Shuangquan Wei Caixin Deng Zhengpeng Zhang Shuangquan Lect College of Eoergy & Power Eng Huazhong Univ of Sci & Tech Wuhan China |
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| Institution: | Zhang Shuangquan Wei Caixin Deng Zhengpeng Zhang Shuangquan Lect., College of Eoergy & Power Eng.,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | The decomposition of the wavelet packets and its reconstruction to purify the rotor axis orbit was used and the automatic identification of rotor axis orbit based on the application of discrete cosine transform was carried out. Combined with the fault diagnosis of hydropower generating units, the graphic symptom extraction of axis orbit was done. This paper discussed the rationality of this method and its feasibility. By this method, the diagnosis speed and precision of the system were improved. |
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| Keywords: | hydropower generating units fault diagnosis axis orbit graphic symptom |
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