Synchronous Vibration Parameter Recognition of Constant-Speed Blades Based on Blade Tip Clearance Measurement
A new method for the synchronous vibration parameter identification of constant-speed rotating blades based on blade tip clearance (BTC) measurement and blade tip timing (BTT) is introduced. A BTC sensor is used to measure the BTC when the blade tip passes through each sensor. The BTT method is used...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/14/1/254 |
| _version_ | 1827384910269120512 |
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| author | Liang Zhang Yiming Xia Cong Chen Qingxi Song Junjun Cao |
| author_facet | Liang Zhang Yiming Xia Cong Chen Qingxi Song Junjun Cao |
| author_sort | Liang Zhang |
| collection | DOAJ |
| description | A new method for the synchronous vibration parameter identification of constant-speed rotating blades based on blade tip clearance (BTC) measurement and blade tip timing (BTT) is introduced. A BTC sensor is used to measure the BTC when the blade tip passes through each sensor. The BTT method is used to determine whether the blade tip arrives in advance or lags. The geometric model between the BTC and the blade tip vibration displacement (BTVD) is established, and the BTVD of the blade tip passing through each sensor is obtained. Then, the nonlinear least squares method is used to determine the synchronous vibration parameters of the constant-speed rotating blade. The results show that with an increase in amplitude, the higher the accuracy of the vibration parameter identification proposed in this paper; with a decrease in the random error of the BTC measurement, the higher the accuracy of the vibration parameter identification proposed in this paper; with a decrease in the random error in the measurement of the blade disk dimensions, the higher the accuracy of the vibration parameter identification proposed in this paper. In addition, the smaller the ratio of the blade length to the blade disk radius, the higher the accuracy of the vibration parameter identification method introduced in this paper. Because the structure of the gas turbine compressor and turbine blade disk has a small blade disk ratio, the method proposed in this paper is suitable for the simultaneous vibration parameter identification of gas turbine compressor blades and turbine blades. |
| first_indexed | 2024-03-08T15:11:31Z |
| format | Article |
| id | doaj.art-3cd15d8f6e974357826cf6899f8fce86 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-08T15:11:31Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-3cd15d8f6e974357826cf6899f8fce862024-01-10T14:51:30ZengMDPI AGApplied Sciences2076-34172023-12-0114125410.3390/app14010254Synchronous Vibration Parameter Recognition of Constant-Speed Blades Based on Blade Tip Clearance MeasurementLiang Zhang0Yiming Xia1Cong Chen2Qingxi Song3Junjun Cao4Faculty of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou 121004, ChinaFaculty of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou 121004, ChinaFaculty of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou 121004, ChinaFaculty of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou 121004, ChinaFaculty of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou 121004, ChinaA new method for the synchronous vibration parameter identification of constant-speed rotating blades based on blade tip clearance (BTC) measurement and blade tip timing (BTT) is introduced. A BTC sensor is used to measure the BTC when the blade tip passes through each sensor. The BTT method is used to determine whether the blade tip arrives in advance or lags. The geometric model between the BTC and the blade tip vibration displacement (BTVD) is established, and the BTVD of the blade tip passing through each sensor is obtained. Then, the nonlinear least squares method is used to determine the synchronous vibration parameters of the constant-speed rotating blade. The results show that with an increase in amplitude, the higher the accuracy of the vibration parameter identification proposed in this paper; with a decrease in the random error of the BTC measurement, the higher the accuracy of the vibration parameter identification proposed in this paper; with a decrease in the random error in the measurement of the blade disk dimensions, the higher the accuracy of the vibration parameter identification proposed in this paper. In addition, the smaller the ratio of the blade length to the blade disk radius, the higher the accuracy of the vibration parameter identification method introduced in this paper. Because the structure of the gas turbine compressor and turbine blade disk has a small blade disk ratio, the method proposed in this paper is suitable for the simultaneous vibration parameter identification of gas turbine compressor blades and turbine blades.https://www.mdpi.com/2076-3417/14/1/254constant rotating speedsynchronous vibrationparameter recognitionblade tip clearance measurement |
| spellingShingle | Liang Zhang Yiming Xia Cong Chen Qingxi Song Junjun Cao Synchronous Vibration Parameter Recognition of Constant-Speed Blades Based on Blade Tip Clearance Measurement Applied Sciences constant rotating speed synchronous vibration parameter recognition blade tip clearance measurement |
| title | Synchronous Vibration Parameter Recognition of Constant-Speed Blades Based on Blade Tip Clearance Measurement |
| title_full | Synchronous Vibration Parameter Recognition of Constant-Speed Blades Based on Blade Tip Clearance Measurement |
| title_fullStr | Synchronous Vibration Parameter Recognition of Constant-Speed Blades Based on Blade Tip Clearance Measurement |
| title_full_unstemmed | Synchronous Vibration Parameter Recognition of Constant-Speed Blades Based on Blade Tip Clearance Measurement |
| title_short | Synchronous Vibration Parameter Recognition of Constant-Speed Blades Based on Blade Tip Clearance Measurement |
| title_sort | synchronous vibration parameter recognition of constant speed blades based on blade tip clearance measurement |
| topic | constant rotating speed synchronous vibration parameter recognition blade tip clearance measurement |
| url | https://www.mdpi.com/2076-3417/14/1/254 |
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