旋转叶片异步振动参数辨识方法及试验验证
Based on the principle of blade tip timing（ BTT） and the vibration principle of one degree of freedom,the parameter identification algorithm of rotating blade asynchronous vibration is established by using all phase FFT（ apFFT） and least square method.The algorithm is verified by numerical simulatio...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2021-01-01
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| Series: | Jixie qiangdu |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.01.007 |
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| _version_ | 1841535846563446784 |
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| author | 王茜 雷晓波 |
| author_facet | 王茜 雷晓波 |
| author_sort | 王茜 |
| collection | DOAJ |
| description | Based on the principle of blade tip timing（ BTT） and the vibration principle of one degree of freedom,the parameter identification algorithm of rotating blade asynchronous vibration is established by using all phase FFT（ apFFT） and least square method.The algorithm is verified by numerical simulation,and the test parameter and empirical value of the rationality for sensor layout are given.The tests of asynchronous vibration parameter identification were launched on a fan rotor,while high pressure nitrogen was used to shock the blades to produce single frequency absolute occupancy vibration.Results show that the method for asynchronous vibration identification could accurately identify blade vibration parameters,and the vibration frequencies of all blades obtained are exactly the same.Frequency identification accuracy is high with the maximum relative error of 1.12% using strain analysis frequency as a baseline.Results verify that the method of asynchronous vibration parameter identification is correct. |
| format | Article |
| id | doaj-art-377c83f4dc9a40d0987de4bbde253c2f |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2021-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-377c83f4dc9a40d0987de4bbde253c2f2025-01-15T02:26:33ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692021-01-01505530609783旋转叶片异步振动参数辨识方法及试验验证王茜雷晓波Based on the principle of blade tip timing（ BTT） and the vibration principle of one degree of freedom,the parameter identification algorithm of rotating blade asynchronous vibration is established by using all phase FFT（ apFFT） and least square method.The algorithm is verified by numerical simulation,and the test parameter and empirical value of the rationality for sensor layout are given.The tests of asynchronous vibration parameter identification were launched on a fan rotor,while high pressure nitrogen was used to shock the blades to produce single frequency absolute occupancy vibration.Results show that the method for asynchronous vibration identification could accurately identify blade vibration parameters,and the vibration frequencies of all blades obtained are exactly the same.Frequency identification accuracy is high with the maximum relative error of 1.12% using strain analysis frequency as a baseline.Results verify that the method of asynchronous vibration parameter identification is correct.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.01.007 |
| spellingShingle | 王茜 雷晓波 旋转叶片异步振动参数辨识方法及试验验证 Jixie qiangdu |
| title | 旋转叶片异步振动参数辨识方法及试验验证 |
| title_full | 旋转叶片异步振动参数辨识方法及试验验证 |
| title_fullStr | 旋转叶片异步振动参数辨识方法及试验验证 |
| title_full_unstemmed | 旋转叶片异步振动参数辨识方法及试验验证 |
| title_short | 旋转叶片异步振动参数辨识方法及试验验证 |
| title_sort | 旋转叶片异步振动参数辨识方法及试验验证 |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.01.007 |
| work_keys_str_mv | AT wángqiàn xuánzhuǎnyèpiànyìbùzhèndòngcānshùbiànshífāngfǎjíshìyànyànzhèng AT léixiǎobō xuánzhuǎnyèpiànyìbùzhèndòngcānshùbiànshífāngfǎjíshìyànyànzhèng |