| 振动故障信号的软件积分研究与应用 |
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| 引用本文： | 段智育,贾民平,许飞云,胡建中.振动故障信号的软件积分研究与应用[J].机械制造与自动化,2007,36(2):76-78,81. |
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| 作者姓名： | 段智育 贾民平 许飞云 胡建中 |
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| 作者单位： | 东南大学,机械工程学院,江苏,南京,210096 |
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| 摘 要： | 分析了常用软件积分方法及其误差产生的原因，采用基于时域插值和FFT变换的波形修正算法进行改进。在时域插值后积分，利用最小二乘法拟合并去除积分后信号波形的趋势曲线；在频域使用FFT变换滤除积分后信号的趋势成分，修正积分后的曲线。汽轮发电机组振动分析表明，基于FFT变换的波形修正算法得到了较好的效果，为判断机组运行状态、进行故障诊断提供了依据。
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| 关 键 词： | 软件积分 趋势项 插值 傅立叶变换 故障诊断 |
| 文章编号： | 1671-5276（2007）02-0076-03 |
| 修稿时间： | 2006-09-22 |
Research & Application of Software Integration of Vibration Fault Signal |
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| DUAN Zhi-yu,JIA Min-ping,XU Fei-yun,HU Jian-zhong.Research & Application of Software Integration of Vibration Fault Signal[J].Machine Building & Automation,2007,36(2):76-78,81. |
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| Authors: | DUAN Zhi-yu JIA Min-ping XU Fei-yun HU Jian-zhong |
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| Affiliation: | College of Mechanical Engineering, Southeast University, Nanjing 210096, China |
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| Abstract: | Software integration and the cause of errors are introduced. Improved methods in time domain and trequeney domain are proposed in the paper. In time domain, interpolation is used to reduce the error before integration, then, the trend components are eliminated using least-squares curve matching method. In frequency domain, the trend components are filtered using FFT method in order to reduce error. These methods have been applied to the vibration signal of turbine- generator analysis offline, and provided information for estimating the running condition and fault diagnosis. |
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| Keywords: | software integration trend interpolation FFT fault diagnosis |
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