整机转子系统振动监测的传感器测点位置选择

吴凡琦; 臧朝平; 高东武; 敬彤; 谭莉; 张秉杰; 王鑫

doi:10.13224/j.cnki.jasp.20230164

整机转子系统振动监测的传感器测点位置选择

doi: 10.13224/j.cnki.jasp.20230164

吴凡琦^1,,
臧朝平^1,*, ,,
高东武²,
敬彤¹,
谭莉²,
张秉杰²,
王鑫²

1.
南京航空航天大学能源与动力学院，南京 210016
2.
中国航发沈阳发动机研究所，沈阳 110015

基金项目: 航空发动机及燃气轮机重大专项基础研究项目（J2019-Ⅰ-0008-0008）；国家自然科学基金（12072146）

详细信息

作者简介:
吴凡琦（1998-），女，硕士，主要从事结构强度与振动研究

通讯作者:
臧朝平（1963-），男，教授、博士生导师，博士，主要从事结构动力学与测试方面的研究。E-mail：c.zang@nuaa.edu.cn

中图分类号: V231.9
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- 被引次数: 0
出版历程
- 收稿日期: 2023-03-17
- 网络出版日期: 2025-05-31

Selection of sensor locations of whole engine for monitoring vibrations of rotor system

1.
College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China
2.
Shenyang Engine Research Institute，Aero Engine Corporation of China，Shenyang 110015，China

摘要

摘要:
提出一种监测发动机转子振动的发动机整机机匣表面传感器测点位置选择方法。基于转子载荷激励下的整机振动响应，建立机匣表面响应关于转子载荷的灵敏度分析方法；基于灵敏度信息，采用有效独立法分析各测点的独立性；进一步综合考虑各测点的灵敏度与独立性，选择机匣表面最佳测点位置。以某航空发动机单转子整机试验器为例，借助有限元模型，应用此方法，选择最佳测点，并将最佳测点的响应与机匣表面上其他测点响应进行比较；最后，在试验器上进行试验验证，试验结果与仿真结果一致，最佳测点信号灵敏度相比于其他测点最多提高3倍，具有良好的振动监测效果。
- 整机转子系统 /
- 振动监测 /
- 强迫响应分析 /
- 灵敏度分析 /
- 传感器布局
Abstract:
A method was proposed for the selection of sensor locations on the case surface of the whole engine for vibration monitoring of a rotor system. A sensitivity analysis of responses on the case surface with respect to rotor excitations was developed through vibration responses of the whole engine under excitations caused by the rotor system. An effective-independence method was developed to analyze the independence of measurement points according to the sensitivity information. Furthermore, the optimal locations of measuring points on the case surface can be selected considering the sensitivity and independence of each measuring point comprehensively. Taking the test rig of a single rotor system designed with the similarity of dynamics of an aero-engine, as an example, the two optimal measuring points on the casing were firstly selected using the finite element modelling and analysis for effectively monitoring the rotor vibration. Afterwards, measurement on the test rig was carried out at different rotating speeds and the response results were compared with the predicted before. A good agreement was matched between the measurement and the predicted result. The sensitivity of the best measuring point can be up to 3 times higher than that of other measuring points, which had a satisfactory vibration monitoring effect.
- rotor system of a whole engine /
- monitoring vibrations /
- forced response analysis /
- sensitivity analysis /
- selection of sensor locations

HTML

图 1 单转子试验器

Figure 1. Test rig of a single rotor system

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图 2 试验器有限元模型

Figure 2. Finite element model of the test rig

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图 3 试验器坎贝尔图

Figure 3. Campbell diagram of the test rig

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图 4 在1200 r/min转速下的转子响应分布

Figure 4. Response distribution of the rotor at 1200 r/min

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图 5 在1200 r/min转速下的机匣响应分布

Figure 5. Response distribution of the case at 1200 r/min

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图 6 在1200 r/min转速下机匣表面的灵敏度分布

Figure 6. Sensitivity distribution of case surface at 1200 r/min

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图 7 机匣表面独立性分布

Figure 7. Independence distribution of case surface

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图 8 1200 r/min转速下机匣表面的灵敏度

Figure 8. Sensitivity of case surface at 1200 r/min

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图 9 测点布局选择

Figure 9. Selection of sensor locations

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图 10 机匣表面测点位置

Figure 10. Locations of measuring points on the case surface

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图 11 响应对比

Figure 11. Contrast of response

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图 12 临界转速附近整机机匣的工作变形

Figure 12. Working deformation of the case near the critical speed

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图 13 试验测点选择

Figure 13. Selection of sensor locations in the test

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图 14 57 g·mm转子不平衡量下的测点响应

Figure 14. Response of measuring point of the rotor unbalance at 57 g·mm

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图 15 1阶临界转速下响应随不平衡量变化

Figure 15. Response at first order critical speed

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图 16 1阶临界转速下测点灵敏度对比

Figure 16. Comparison of sensitivity of measuring points at first order critical speed

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