Parameter Identification Method for a Periodic Time-Varying System Using a Block-Pulse Function
For periodic time-varying systems, a method of parameter identification based on the block-pulse function is presented. Firstly, the state-space equation of the system was expanded using the block-pulse function, then the recursion formula of the parameter identification of a time-varying system was...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Aerospace |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2226-4310/9/10/614 |
| _version_ | 1797476356646240256 |
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| author | Zhi Wang Jun Wang Jing Tian Yu Liu |
| author_facet | Zhi Wang Jun Wang Jing Tian Yu Liu |
| author_sort | Zhi Wang |
| collection | DOAJ |
| description | For periodic time-varying systems, a method of parameter identification based on the block-pulse function is presented. Firstly, the state-space equation of the system was expanded using the block-pulse function, then the recursion formula of the parameter identification of a time-varying system was obtained, according to the irrespective and orthogonal characteristics of the block-pulse function. This study provides a wide range of applications by saving time in calculation with a highly accurate method. The parameter identification was carried out by including the numerical simulation model of a three-degree freedom system and the vibration experiment results of an asymmetrical rotor system. The state space wavelet method and EMD method were compared cross-sectionally with the proposed method; this shows that the proposed method is accurate and effective, which makes it valuable in numerous applications. It also has a certain application value for several related projects. |
| first_indexed | 2024-03-09T20:56:44Z |
| format | Article |
| id | doaj.art-b5c1f3264e3a4223817549f4acf25e94 |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-09T20:56:44Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-b5c1f3264e3a4223817549f4acf25e942023-11-23T22:19:12ZengMDPI AGAerospace2226-43102022-10-0191061410.3390/aerospace9100614Parameter Identification Method for a Periodic Time-Varying System Using a Block-Pulse FunctionZhi Wang0Jun Wang1Jing Tian2Yu Liu3Key Lab of Advance Measurement and Test Technology for Aviation Propulsion System, Shenyang Aerospace University, Shenyang 110136, ChinaKey Lab of Advance Measurement and Test Technology for Aviation Propulsion System, Shenyang Aerospace University, Shenyang 110136, ChinaKey Lab of Advance Measurement and Test Technology for Aviation Propulsion System, Shenyang Aerospace University, Shenyang 110136, ChinaKey Lab of Advance Measurement and Test Technology for Aviation Propulsion System, Shenyang Aerospace University, Shenyang 110136, ChinaFor periodic time-varying systems, a method of parameter identification based on the block-pulse function is presented. Firstly, the state-space equation of the system was expanded using the block-pulse function, then the recursion formula of the parameter identification of a time-varying system was obtained, according to the irrespective and orthogonal characteristics of the block-pulse function. This study provides a wide range of applications by saving time in calculation with a highly accurate method. The parameter identification was carried out by including the numerical simulation model of a three-degree freedom system and the vibration experiment results of an asymmetrical rotor system. The state space wavelet method and EMD method were compared cross-sectionally with the proposed method; this shows that the proposed method is accurate and effective, which makes it valuable in numerous applications. It also has a certain application value for several related projects.https://www.mdpi.com/2226-4310/9/10/614periodic time-varying systemparameter identificationblock-pulse functionasymmetric rotor |
| spellingShingle | Zhi Wang Jun Wang Jing Tian Yu Liu Parameter Identification Method for a Periodic Time-Varying System Using a Block-Pulse Function Aerospace periodic time-varying system parameter identification block-pulse function asymmetric rotor |
| title | Parameter Identification Method for a Periodic Time-Varying System Using a Block-Pulse Function |
| title_full | Parameter Identification Method for a Periodic Time-Varying System Using a Block-Pulse Function |
| title_fullStr | Parameter Identification Method for a Periodic Time-Varying System Using a Block-Pulse Function |
| title_full_unstemmed | Parameter Identification Method for a Periodic Time-Varying System Using a Block-Pulse Function |
| title_short | Parameter Identification Method for a Periodic Time-Varying System Using a Block-Pulse Function |
| title_sort | parameter identification method for a periodic time varying system using a block pulse function |
| topic | periodic time-varying system parameter identification block-pulse function asymmetric rotor |
| url | https://www.mdpi.com/2226-4310/9/10/614 |
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