搜索算法对有效独立法优化振动模态测量位置的影响

刘渊; 臧朝平; 刘忠华

搜索算法对有效独立法优化振动模态测量位置的影响

1.
南京航空航天大学能源与动力学院, 南京 210016
2.
中国航空工业集团公司西安航空发动机有限公司, 西安 710021

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出版历程
- 收稿日期: 2011-03-03
- 修回日期: 2011-04-26
- 刊出日期: 2012-02-28

Influence of search algorithm on optimized measurement positions of effective independent method for modal test

1.
College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2.
Xi’an Aero-Engine Limited, Aviation Industry Corporation of China, Xi’an 710021, China

摘要

摘要: 讨论了直接法、逐步累积法和逐步消除法三种不同搜索算法对有效独立法选取最优传感器测量位置的影响.以航空发动机某部件为实例,对有效独立法通过三种搜索算法选取的最优传感器测量位置的搜索结果,在模态相关度、测量点各阶能量和Fisher信息矩阵三个参数方面进行了分析、比较,结果表明逐步消除法能最有效地达到有效独立法的增大目标振型空间分辨率的效果.
- 搜索算法 /
- 有效独立法 /
- 最优测量位置 /
- 模态相关度 /
- 模态试验
Abstract: The influences of three different search algorithms,i. e.:direct search method,step accumulating method and step eliminating method,on the effective independent method were discussed with respect to the optimized measurement positions for modal test.An aero-engine component was taken as an example to demonstrate the application of the approach.The optimized measurement positions selected by these three search algorithms for the effective independent method were analyzed comparatively with respect to modal correlation,kinetic energy of each mode contributed to the measured positions and the Fisher information matrix.The results indicate that the step eliminating method can most effectively achieve the goal of the effective independent method by increasing the spatial resolution of the target mode shapes.
- search algorithm /
- effective independent method /
- optimized measurement positions /
- modal correlation /
- modal test

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参考文献(13)

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