报告详情
Statistical Analysis Method of Aero-engine Rotor Unbalance Vector Inversion Considering Complex Transmission Path and Noise Interference Based on Casing Measuring Point Response
编号：47
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更新：2025-06-15 10:43:27 浏览：15次
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报告开始：暂无开始时间（Asia/Shanghai）
报告时间：暂无持续时间
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摘要
Whole engine balancing can improve balancing efficiency, but the measuring points are located on the surface of the casing. The transmission path from the vibration source to the measuring points is complex, which makes the vibration signal vulnerable to the interference of multi-source noise, and reduces the accuracy of the inversion. Therefore, based on the statistical distribution law of the vibration response, random numbers are used to simulate the noise interference in the vibration response. By conducting harmonic response analysis on the model, the influence coefficient considering the complex transmission path is obtained. This coefficient is used to infer the unbalanced response considering noise interference. Statistical analysis is conducted on the original response containing noise interference and the inverse response results obtained by optimization methods. Normal distribution is used to approximate the original response and inverse response. The difference rate between the mean and standard deviation of them is calculated, as well as the probability of the normal distribution of the original response in the 2σ and 3σ intervals of the normal distribution of the inverse response. Compared with the results of the single group response inverse method, it shows that the statistical analysis can overcome the contingency of the single group results in the dynamic balance of the whole engine. The results show that the influence of the uncertainty of noise interference is considered in the dynamic balance of the whole engine by using the statistical analysis. The inverse result is reasonable and accurate. This method improves the accuracy and efficiency of the dynamic balance of the whole engine, and provides theoretical support and method reference for the engineering application of the dynamic balance of the whole engine.
关键词
Noise interference,Whole-engine dynamic balancing,Probability Distribution,optimization-based inversion
报告人
Wenhao Bi
postgraduate Beijing University of Chemical Technology稿件作者
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重要日期
-
会议日期
08月01日
2025
至08月04日
2025
-
06月23日 2025
初稿截稿日期
主办单位
中国机械工程学会设备智能运维分会
承办单位
新疆大学
联系方式
- Mrs. Yanruqiang
- ya******@xjtu.edu.cn
历届会议
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2025年08月01日 中国 wulumuqi
2025 International Conference on Equipment Intelligent Operation and Maintenance -
2023年09月21日 中国 Hefei
第一届（国际）设备智能运维大会
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