| 根据随机不确定度对表征压力脉动程度的特征参数的比较 |
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| 引用本文： | 赵越,覃大清,刘文杰,徐用良,许建新.根据随机不确定度对表征压力脉动程度的特征参数的比较[J].大电机技术,2012(1):34-37. |
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| 作者姓名： | 赵越 覃大清 刘文杰 徐用良 许建新 |
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| 作者单位： | 哈尔滨大电机研究所,哈尔滨,150040 |
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| 摘 要： | 本文采用试验和统计分析的方法,根据在某中水头模型水轮机的相同工况下采集的300组压力脉动数据,采用比较试验数据随机不确定度的方法,研究了特征峰峰值、均方根、标准偏差和最大分频幅值等表征压力脉动程度的特征参数的随机不确定度情况,并以此提出了采用均方根值来表征压力脉动程度的建议。
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| 关 键 词： | 压力脉动 特征参数 随机不确定度 |
Comparison with the Characteristic Parameters that Denoted the Extent of Pressure Fluctuation on Stochastic Uncertainty |
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| ZHAO Yue
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QIN Daqing
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LIU Wenjie
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XU Yongliang
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XU Jianxin.Comparison with the Characteristic Parameters that Denoted the Extent of Pressure Fluctuation on Stochastic Uncertainty[J].Large Electric Machine and Hydraulic Turbine,2012(1):34-37. |
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| Authors: | ZHAO Yue QIN Daqing LIU Wenjie XU Yongliang XU Jianxin |
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| Affiliation: | (Harbin Institute of Large Electric Machinery,Harbin 150040,China) |
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| Abstract: | In this paper,according to 300 groups of test data of pressure fluctuation at same operation condition on a middle head Francis turbine model,the statistical behaviors of characteristic peak-to-peak value,root-mean-square,standard deviation and main frequency amplitude are explored on stochastic uncertainty method.Root-mean-square is suggested to denote the extent of pressure fluctuation. |
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| Keywords: | pressure fluctuations characteristic parameter stochastic uncertainty |
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